Conversion Rate and SEO: A Winning Combination

This article explores the topic of the SEO conversion rate, a key component of SEO conversion. Local SEO delivers a conversion rate 300% higher than social media (SEMrush, 2026).

Growing traffic while improving how often visitors take action is the shared ambition of SEO and conversion rate optimisation. These two complementary disciplines each have their own technical and methodological specifics, and their potential impact varies depending on your website. To make things clearer, we will start with a detailed introduction to both areas of digital marketing. We will then take a closer look at conversion and how to optimise it. Finally, we will compare the two approaches using formulas and worked examples to help you plan budgets and assess the return on investment of each discipline.

Definition and Purpose of SEO

SEO (Search Engine Optimisation) is a set of techniques designed to improve a website’s ranking in search engine results. Its primary objective is to increase visibility and drive organic traffic. Ultimately, this helps generate more qualified leads for your business or organisation. We will return to this in more detail later, but it is worth noting that SEO encompasses several sub-disciplines: semantic SEO, technical SEO, and more.

The Main Areas SEO Works On

The aim here is not to list every factor that can improve your position in the SERP (search engine results page). However, it is important to bear in mind a few non-negotiable foundations:

A Technically Healthy Website

There is little point investing in marketing if your website has blocking technical issues. Solid technical foundations are required for strategies to deliver results. Site architecture, URLs, sitemaps, rich results, and page-load speed are all essential. As mobile usage has risen steadily and overtaken desktop for several years now, mobile friendliness is also critical. This is the realm of technical SEO. Search engines use bots to crawl sites and analyse data; technical SEO professionals do the same. Incremys offers several modules for fast, efficient 360° technical SEO analysis.

High-Quality Writing

This is one of the pillars of organic search. Publishing relevant, high-quality content is essential to demonstrate expertise in a given area and engage readers. Keyword choice, semantic richness, and content depth are all criteria that should command your attention. To ensure your website content is properly optimised for organic search, Incremys provides content production modules that assign an SEO score based on all key criteria. This makes it straightforward to refine and improve your text when something falls short. For example, if your target keyword is not present frequently enough, the tool flags it and you can adjust the copy to fall within the expected density range.

Link Building (Netlinking)

This refers to links from third-party websites pointing to yours: backlinks. It is a crucial element, signalling the quality of your site and the relevance of your content. If a search engine detects that many credible sites link to yours, it is more likely to promote it—whilst taking into account the quality of those sources.

To build a strong backlink profile, you should:

• Earn links from authoritative websites;
• Acquire backlinks from a wide variety of sources;
• Avoid links from suspicious or low-quality websites.

Link building is a separate branch of SEO focused on acquiring links. Strategically, it balances two dimensions: quantity and quality. Incremys provides tailor-made link-building campaigns built around a purely quality-driven approach: articles are created with Incremys technology to rank for a target keyword, then published on sites whose authority creates a genuine opportunity to perform. The source article benefits from its SERP performance, ultimately boosting the authority of both sites: the publisher and the recipient.

What Is a Conversion?

In digital marketing, a conversion is the completion of a goal. Most often that goal is a sale or a subscription, but not always. A conversion can also be:

• A newsletter sign-up
• Account creation
• A form submission
• A click
• Software installation...

Definition of Conversion Rate

The conversion rate, expressed as a percentage when multiplied by 100, is the ratio, over a given period, of conversions to the total number of unique visitors to your website. Here is a concrete example:
A website generates 150 visits per month. The goal is a newsletter sign-up. That goal is completed 30 times during the month. Your conversion rate is (30/150) x 100 = 20%.

The Formula to Calculate Conversion Rate: Conversion Rate = Conversions / Visitors

More specifically, there are two types of conversions:

• Micro-conversions, which reflect a small interaction between a business and a site visitor. For example, providing an email address, watching a video, or choosing to follow you on social media.
• Macro conversions (or true conversions), which directly affect revenue—either by completing a purchase or taking out a subscription.

SEO vs SEA (Search Engine Advertising)

SEO and SEA are the two main levers for acquiring traffic to a website.

SEA has the advantage of bringing qualified traffic quickly. However, depending on how competitive your sector is, it can prove costly. When executed properly, it remains a powerful way to boost business activity or strengthen brand awareness.

SEA ROI is relatively straightforward to calculate, largely thanks to tracking options that usually allow precise measurement of campaign impact.

When SEA spend stops, traffic stops. SEA requires constant monitoring and adjustments to maintain a positive ROI.

The main strength of SEO is its sustainability. An SEO project can take time and sometimes demands significant resources. However, it is a long-term investment: once the strategy is implemented and content and backlinks are in place, performance can be sustained for years. That is the key advantage of approaches aligned with search engine guidelines—reducing risk over time.

SEO campaign ROI is calculated over the long term. Suppose you invest €50k in SEO over one year and it generates €25k in additional margin in year one. At that point, you can be confident that the following year you will break even on your first-year investment.

Another argument in favour of SEO: it typically converts better than SEA. Users tend to trust strong organic content more than a paid advert.

SEO vs SEA Value Equivalence

How much is my organic traffic worth? If I had to buy Google Ads to achieve the same level of traffic, what would it cost?

To answer this, Incremys developed a dedicated module that calculates the Google Ads cost equivalent of your organic traffic. The module accounts for all key parameters: keyword, ranking position, and average CTR by position. In the end, you know precisely how much your SEO is worth in monetary terms.

In reality, organic traffic is often worth more than its Google Ads equivalent. The conversion rate from organic search is typically higher than that from paid search. As a rough benchmark, organic traffic may convert at around 5%, whilst paid search averages closer to 2% on search ads and approximately 0.35% on display. This difference in organic conversion performance demonstrates that not all traffic is created equal.

Conversion and the Customer Journey

Conversion happens at the end of the customer journey. That journey can be analysed in different ways, including through a funnel model, as we will see shortly. Along the way, there can be multiple micro-goals. A significant part of web analytics involves understanding where the friction points lie and what can be optimised to move prospects towards the goal and turn them into customers.

The Conversion Funnel: A Visual Model of the Customer Journey

The conversion funnel (also called a sales funnel) is a marketing analysis framework showing the steps a lead goes through, from first contact to final purchase. As the classic funnel model illustrates, the further a prospect progresses, the narrower the funnel becomes. By reducing the number of choices available at each step, it becomes easier to guide users towards the desired action, such as a conversion or a purchase. By analysing the SEO conversion rate at each stage, you can identify strengths and weaknesses in the sales process and make the necessary improvements. These tools work like lenses applied to different segments—for example, comparing performance between organic and paid traffic.

Here are the main stages and what they represent:

Awareness and Visibility

Here, the aim is to introduce your product or service to the market. User searches at this stage tend to be informational. By publishing high-quality content that matches search intent and targets the right keywords, you maximise your chances of appearing prominently in the SERP.

KPIs to track: rankings and CTR (click-through rate).

Discovery and Consideration

The user is now looking to deepen their understanding of a more specific topic. By optimising user experience and providing content that answers their questions, you can position your brand as a credible reference in the field.

KPIs to track: micro-conversions and broader user behaviour (time on page, scroll depth, clicks, shares, repeat visits...)

Conversion

This is a decisive stage that leads to purchase, turning a prospect into a customer.

KPIs to track: basket abandonment, acquisition source (landing page, domain, or originating campaign), and user behaviour (bounce rate, clicks...)

Retention

This stage is sometimes overlooked—and that is a significant strategic mistake. Retaining existing customers is generally more cost-effective than acquiring new ones. Returning customers tend to buy more often and spend more. They can also recommend your products or services to others, effectively becoming brand advocates.

What Is a Good Conversion Rate?

There is no single answer. Sector averages and medians exist, but they should be interpreted with caution. Conversion performance is directly linked to how attractive and competitive your offer is. For example, if you sell the latest folding smartphone at cost price, your conversion rate may soar—but you will not make money. Benchmarks are most useful in relatively homogeneous, highly competitive markets. Even then, context matters: average order value, margin, retention rate, and more all affect the real value of a conversion. In any case, monitoring your own website’s conversion rate and tracking its variations is best practice. When it rises, it indicates your strategies are working. For clearer analysis, segment organic and paid conversion rates separately. As long as a website can be improved in terms of navigation, content quality, and offer appeal, its conversion rate can usually be improved too. When a site is well optimised, conversion rate and SERP rankings often improve together—it becomes a virtuous circle.

Examples of Conversion Rates by Industry

According to the most recent data (sources 2025–2026),

25% of accounts perform at least twice the average, reaching a conversion rate of 5.31%.

10% stand out with a median conversion rate of 11.45%—around five times the overall average.

As you can see, results vary widely—especially when broken down by sector.

By industry, figures can differ significantly:

• Global median conversion rate: 2.35%
• E-commerce median conversion rate: 1.84%
• Legal median conversion rate: 2.07%
• B2B median conversion rate: 2.23%
• Finance median conversion rate: 5.01%

SEO Conversion Rate

Conversion rate is a KPI (key performance indicator) that applies to both SEA and SEO. When analysing conversion performance, you should segment acquisition channels so that you can review the SEO conversion rate and paid search performance separately. At a minimum, this is what you need to do to gain a high-level view of your marketing performance. As mentioned earlier, organic search typically delivers a stronger conversion rate than paid search. When we refer to the SEO conversion rate, we are talking specifically about conversions generated by organic traffic.

Search Engine Optimisation and Conversion Rate: Interdependent Concepts

To understand why conversion rate and SEO work so well together, keep two points in mind:

• When executed properly, SEO delivers qualified traffic continuously and over the long term;
• Improving CTR on a website that already attracts qualified traffic can have a significant business impact.

Let’s take a deliberately simplified example: one of your pages reaches position one in the SERP. That achievement logically generates strong traffic. But in the end—perhaps for one or several of the reasons discussed later—no one converts by submitting the sign-up form. In that scenario, all your organic search efforts have produced little tangible business value.

Organic Search as a Lever for Conversions

The primary aim of organic search is to secure strong rankings in search results. However, many SEO improvements also support conversion performance:

• A well-structured website helps both search engines and users navigate, improving the overall experience for visitors;
• High-quality content boosts SEO, but it also showcases your expertise and reassures users—both essential for turning leads into customers;
• To deliver relevant results, Google favours websites with strong usability and intuitive design. Those qualities are equally important for reducing drop-off at each stage of the customer journey. In marketing terms, this relates to retention. Ensuring good retention relies primarily on providing an optimised, enjoyable user experience.

Should You Optimise Conversion Rate, SEO, or Both?

The right strategy and levers depend on factors specific to each business: budget, needs, objectives, and more. In all cases, what is appealing about both SEO and CRO is that the investment is durable—actions deliver value over time. If your conversions are high value (i.e., each conversion represents a genuinely meaningful commercial outcome), then focusing on improving the SEO conversion rate makes clear sense. Once conversion performance is improved, you can then feed the funnel with SEO initiatives that bring in qualified traffic. In practice, some SEO improvements directly impact CRO and vice versa. For example: a page with weak content is indexed on a keyword that does not truly match what an e-commerce site sells. The SEO team realigns the page to the right keyword—one that matches the page content and users’ expectations (search intent). That change can directly improve the page’s conversion rate. CRO can then complement this by refining CTAs and UX.

Factors That Influence Conversion Rate

Several metrics can help you analyse conversion performance. Understanding them is essential for a robust, data-driven marketing approach.

Understanding Your Audience and Location

Are most visitors located in a particular region? Are they predominantly men or women? What is the average age? By answering these questions, you understand your audience better and can define their needs more accurately. Identifying prospect groups—or personas—helps you tailor your marketing strategies and offer accordingly.

Navigation on Your Website

The path visitors take through your site (behaviour flow) is invaluable. It shows which pages perform well and where you lose visitors. More broadly, it reveals how users interact with your website.

Time Spent on the Page

If someone stays only a few seconds before leaving, they are unlikely to complete any action—and your conversion rate will suffer as a result. Conversely, a user who spends a long time on a page without converting may indicate a different issue (for example, the call to action is not prominent enough).

Bounce Rate

This metric shows the percentage of users who leave a page rather than continue to another page on your site. Generally, a low bounce rate is considered positive. However, some pages can have a high bounce rate without it being a negative signal—for instance, when users find a clear, complete answer to a simple question and leave satisfied.

Exit Page

As the name suggests, this is the last page viewed before a user leaves your site. If, for example, the exit page is the payment step where users enter card details, there may be a problem. It could be technical or related to user experience (the user may not feel sufficiently reassured at that point).

Value per Visit

This figure indicates the monetary value of a single visit to your site. If your online shop receives 100 visits per day and your conversion rate is 5% with an average spend of €50, your daily revenue is €250. Each visit is therefore worth €2.50. This metric is particularly important and should be compared with the next one.

Cost per Conversion

This represents the cost to the business of generating a conversion. It is not always easy to calculate, but it is critical. If cost per conversion is higher than the value per visit, you are losing money.

ROI

Return on investment is simply the difference between what you gain and what you invest. This applies equally to SEA, SEO, and CRO.

Which Tools Can You Use to Collect and Analyse This Data?

For web analytics and technical monitoring, Google’s tools are essential:

Conversion Rate in Google Analytics

Google Analytics simplifies conversion rate calculation: you define what a conversion is (GA calls this a "goal") and it tracks it automatically. You can also assign monetary values to goals. When those values are well defined, you can monitor performance in a near accounting-like fashion.

Google Search Console for SEO KPIs and CTR Performance

Google Search Console KPIs are primarily useful for organic search. However, they also include metrics that support analysis and optimisation of conversion performance.

Sitemap Analysis

Google bots browse the web to index pages across websites. To facilitate this, you should provide a sitemap listing your URLs and indicating which should be prioritised. Google Search Console lets you submit this sitemap and verify its validity. You can then easily see which pages have been indexed and which have not—crucial information, since indexed pages can appear in search results whilst unindexed ones cannot.

Query and Keyword Analysis

Google Search Console provides a list of keywords for which you appear in the top 100 results. This helps you identify the queries driving the most visibility. You can review average position, impressions, and clicks for each. Average CTR is also displayed. These data are particularly useful for improving the top of the conversion funnel.

SEO Performance Analysis

Google Search Console also surfaces technical data that matters for technical SEO. For example, it identifies URLs returning errors (including the well-known 404). It also provides a summary view of page speed and overall technical optimisation. More broadly, it reports all technical errors crawled by the engine. Finally, it offers tips and recommendations to help improve organic performance.

External Link Analysis

As discussed, backlinks matter greatly. In Google Search Console, all external links are analysed: source sites, destination pages, and associated anchor text. The reports help you assess backlink quality and identify any broken links.

Mobile Performance

Many details can damage the way your site displays on mobile: font sizes, incompatible plugins, slow load times, and more. Mobile search accounts for a significant share of all searches, so it is crucial to provide a format that works well on smartphones and tablets.

Security Assessment

Security is an increasingly sensitive area that users pay close attention to. It is of paramount importance, especially for e-commerce sites or any website collecting sensitive data. Google Search Console can detect security vulnerabilities where they exist and propose solutions to address them.

Google Search Console or Google Analytics?

These tools are complementary. Google Search Console focuses on how users arrive at a website—analysing the SERP, queries, and clicks. Google Analytics takes over once users are actually on the site (regardless of how they arrived) and provides deep behavioural data. For a complete and meaningful analysis, it is useful to use both together. Because Google’s interfaces can be complex, Incremys includes GA and GSC reporting (among other data sources) within its tailored performance reporting, focusing only on the metrics that genuinely matter to analysts and decision-makers.

Incremys: Saving Time and Improving Effectiveness

Incremys also helps you track changes in your conversion rate efficiently and identify areas for improvement with ease.

A Practical Example of Analysis

To illustrate what is possible with Incremys, here is a specific example based on one of its key features. For any given SERP position, there is an expected CTR. By analysing page performance, you can identify pages that are performing well (CTR at or above expectation) and those that have room for improvement. For example, a result in position three has an average CTR of 2.43%. If an Incremys report shows you are achieving only 0.4%, there are clear action points: rewrite your SERP-facing elements, namely the title tag and meta description. Depending on the query and SERP layout, you may also optimise images or other elements such as rich results (for example, review stars).

In the example above, relating to the search query poêle à bois, it is easy to see that manoamano.fr is likely to perform well given its position: it features photos, user reviews, and a price range (rich results). By contrast, topchaleur.com suffers by comparison, lacking those elements and displaying an overly long description that is truncated in the results.

Conversion Rate Optimisation (CRO)

CRO (Conversion Rate Optimisation) is a discipline in its own right, with its own processes, analyses, tools, tracking, and protocols—much like SEO. Larger organisations are more likely to engage CRO specialists. Amazon, for instance, was already dominant in its market at launch in 1995. If the company remains the absolute reference today, it is because optimising conversion rates has always been a constant priority. It has recently been demonstrated that Amazon Prime customers convert at between 10% and 15%—a remarkable performance in an ever more competitive market.

Key CRO Techniques

All CRO techniques aim for one thing: improving user experience. UX and conversion rate are closely linked—if users are dissatisfied with their experience on your website, there is little chance they will buy or sign up. To improve site experience, three levers can be applied: technology, usability, and content.

1 - Technology

Load Time

Fast-loading pages encourage users to stay. Conversely, load times above three seconds frequently lead users to leave. Beyond UX, page speed is also crucial for Google, which can penalise slow pages in rankings.

Security

You must reassure users when they are asked to provide personal data or payment details. HTTPS (shown in the address bar) is now a widely recognised trust signal; many users will refuse to complete a purchase without it. It is worth noting that trust extends beyond the technical: a questionable design or spelling mistakes can also undermine user confidence.

2 - Usability

Design and Usability

A website’s appearance—especially the homepage—reflects your brand, much like a shop window. A clean, well-designed interface signals professionalism and builds trust, whilst also improving readability. Usability is equally vital: users should be able to move easily between pages (internal linking plays an important role here). For example, within a sales funnel, no more than three clicks should separate an entry page from the point of purchase.

Mobile Compatibility

As noted earlier in the context of SEO, mobile display also plays a key role in UX. In 2018, more than one in three online purchases were made via smartphone. Mobile commerce has become a category in its own right, with growing influence year after year.

3 - Content

Content Quality

Content is the primary driver of interest in a website. High-quality content encompasses visuals and videos too. Smart internal linking helps users navigate and improves retention, lowering bounce rate. Content built around strategically chosen keywords—selected for their search volume and intent—helps achieve strong SERP positions. This is commonly referred to as SEO content, serving both users and search engines. There is also another type of content that is not designed to rank but to convert: copywriting. This marketing-focused writing technique aims to maximise conversions on your commercial pages.

A/B Testing: A Valuable Approach

A/B testing is fundamental to conversion rate optimisation. It involves testing multiple versions of a page and analysing user behaviour to determine, based on data, which version performs best. These tests enable you to measure the impact and relevance of changes you make.

There are several A/B testing formats:

• Classic A/B or A/Bn testing: A/B compares two versions of a page; A/Bn compares more than two.
• Split testing: different user groups are directed to different landing pages, changing the entire journey. This is useful when adding new pages or during a full site redesign, allowing you to validate changes before rolling them out fully.
• MVT (multivariate testing): multiple variables are tested simultaneously to find the best-performing combination (copy, colours, CTA).

Where Should You Allocate Budget: CRO or SEO?

Decision-makers should take a data-driven approach. That is precisely how Incremys is designed. Here is an example analysis:

E-commerce: CRO or SEO?

• Organic traffic: 30,000 visitors per month
• Value per visit: €0.30
• SEO share of voice (Incremys data): 3%
• Target SEO share of voice (Incremys data reflecting SEO growth potential): 5%
• SEO campaign cost: €15k
• Conversion rate: 3.5%
• Conversion rate optimisation target: 5%
• CRO cost: €15k
• Monthly revenue before optimisation: organic traffic x value per visit = €9k
• Monthly revenue after SEO optimisation: +60% = €15k
• Monthly revenue after CRO optimisation: +42.85% = €12.85k

This framework provides a high-level view and helps estimate ROI. Of course, you can refine the analysis by including additional business-specific metrics such as average basket value and average margin. Those granular approaches should complement, rather than replace, an overall view of your website and its growth potential.

SEO and GEO Conversion Performance: When Organic Search Meets Generative AI

Historically, the conversion rate from organic search has been higher than other channels (14.6% lead closing rate vs 1.7% for outbound, HubSpot 2025). In 2026, GEO amplifies this advantage: pages that rank well organically are also the most cited by AI systems, creating a virtuous circle between visibility and conversion.

• SEO + GEO = double exposure: 99% of AI Overviews cite pages from the organic top 10 (Seer Interactive, 2025). SEO efforts that improve rankings also boost GEO visibility, and vice versa. The SEO conversion rate benefits from this dual exposure.
• AI-refined intent: Users who read an AI answer before clicking arrive with a clearer intent. Content that responds directly—with specific data, comparisons, and proof points—tends to convert above the classic organic average.
• Zero-click and indirect conversion: 60% of searches end without a click (Semrush, 2025). However, being cited in an AI answer strengthens brand awareness. Studies show that users exposed to a brand via an AI response are more likely to convert on a subsequent direct visit.

The Incremys performance reporting module combines SEO rankings, AI citations, and conversion data to measure the combined impact of SEO and GEO.

Frequently Asked Questions

What Is the SEO Conversion Rate?

The SEO conversion rate measures the share of visitors from organic traffic who complete a target action (purchase, sign-up, demo request, quote request). It is calculated separately from paid traffic to assess the specific performance of organic search. In 2025, the lead closing rate from SEO reaches 14.6% (HubSpot), far above outbound (1.7%).

How Do You Calculate an SEO Conversion Rate?

The formula is: (Number of conversions from organic traffic / Number of sessions (or users) from organic traffic) x 100. Example: if your "Organic Search" channel generates 2,000 sessions in a month and 60 conversions, your SEO conversion rate is (60/2000) x 100 = 3%. For reliable analysis, keep the same definition of "conversion" and the same unit (sessions vs users) across the entire period.

What Is a Good SEO Conversion Rate in B2B?

There is no universal figure. A "good" rate depends on sector, sales-cycle complexity, offer type (SaaS, services, industrial), price point, and traffic quality. In B2B, it is generally most useful to track micro-conversions (e.g., download, sign-up, CTA click) separately from your primary conversion (e.g., demo or quote request), then connect them to pipeline stages (MQL, SQL) to assess true performance.

Why Is My SEO Traffic Increasing but Not My Conversion Rate?

The most common causes are: poor intent/keyword alignment (informational traffic that does not convert), a weak landing page (CTA, proof, messaging), UX friction (mobile experience, speed, overly long forms), a tracking issue (conversion not measured, attribution gaps), or an offer or positioning that is not sufficiently differentiated. Segmenting by SEO landing pages, queries, and device will quickly reveal where users are dropping off.

How Can You Improve the SEO Conversion Rate?

The main levers include: targeting high-intent commercial keywords, optimising landing pages (speed, CTA, social proof), improving internal linking towards conversion pages, enriching content with structured data for GEO, and analysing user journeys in GA4 to identify friction points.

Which KPIs Should You Track alongside the SEO Conversion Rate?

To manage performance properly, also track: SEO CTR (Search Console), conversion rate by landing page, engagement (time on page, scroll depth, clicks), bounce rate and exits, conversion rate by device (mobile/desktop), cost per lead (including content production and link building) and value per conversion (to calculate a realistic SEO ROI).

What Is the Difference between Conversion Rate from SEO and SEA?

The SEO conversion rate relates to organic traffic; SEA relates to paid traffic (Google Ads). Organic search typically converts at higher rates (around 5% vs 2% on average) because it attracts users with stronger intent and greater trust. SEA provides more predictable volume but comes with a cost per click. The two channels are complementary within a broader conversion strategy.

How Do You Correctly Segment the SEO Conversion Rate in GA4?

In GA4, create or verify your conversion events, then analyse them by filtering the "Organic Search" channel group (or source/medium). To go further, segment by landing page, queries (via Search Console), new vs returning users and device to identify which SEO content genuinely drives conversions (and not just visits).

Can GEO and LLMs Improve the SEO Conversion Rate?

Yes, indirectly. Strong SEO rankings increase your chances of being cited in AI answers, which builds trust and brings visitors with clearer intent. Content that provides proof (figures, comparisons, case studies, structured FAQs) and delivers an immediately actionable answer tends to have a positive impact on conversion, particularly on decision-stage pages (product pages, services, comparisons).

To Go Further

Explore other articles in our conversion-rate series:

• SEO conversion
• good conversion rate
• Google Analytics
• Google Analytics KPIs