Conversion rate: what it is, how to calculate it and how to improve it

You have traffic. You have a product. You have advertising spend. But sales aren't following. If this situation sounds familiar, the problem probably isn't in acquisition — it's in conversion.

The conversion rate is the metric that separates businesses that grow from those that merely accumulate visits. It doesn't matter how much traffic you generate if that traffic doesn't buy, doesn't sign up, doesn't book. In this article we explain exactly what the conversion rate is, how to calculate it, what benchmarks you should know, and — most importantly — what you can do today to improve it.

What is the conversion rate?

The conversion rate — also known as the conversion ratio or simply conversion rate — is the percentage of users who complete a desired action within your website or application, relative to the total number of visitors who arrived at that environment.

A "conversion" is not necessarily a purchase. Depending on the business and the specific goal, a conversion can be:

• Completing a purchase in an ecommerce store
• Filling out a contact form or quote request
• Signing up for a newsletter or platform
• Downloading a free resource
• Booking an appointment or demo

What defines a conversion is that it represents the step with the most value for your business at each stage of the funnel. And the conversion rate tells you how efficiently you are getting users to take that step.

In the context of CRO (Conversion Rate Optimization), improving this rate is the central goal. It's not about attracting more users — it's about getting more performance from the traffic you already have.

How is the conversion rate calculated?

The formula for calculating the conversion rate is straightforward:

Conversion rate = (Number of conversions / Number of visitors) × 100

This gives you the percentage of users who converted out of the total who visited your site.

Practical examples for calculating the conversion rate

Example 1 — Fashion ecommerce: An online store receives 25,000 visits in a month and records 375 completed purchases.

Conversion rate = (375 / 25,000) × 100 = 1.5%

Example 2 — B2B services website: A consultancy receives 4,200 visits per month and 84 contact requests.

Conversion rate = (84 / 4,200) × 100 = 2%

Example 3 — Lead generation landing page: A lead generation landing page receives 1,800 visits and generates 216 sign-ups.

Conversion rate = (216 / 1,800) × 100 = 12%

The denominator can vary depending on the analysis: you can use total sessions, unique users, or even the number of users who reached a specific page. What matters is maintaining consistency so that comparisons remain valid over time.

What is a good conversion rate?

This is one of the most frequently asked questions and also one of the most misunderstood. The direct answer: it depends on the industry, the type of conversion, and the traffic channel.

Benchmarks by industry

According to aggregated data from platforms such as Google, Unbounce and IRP Commerce studies, these are the typical ecommerce conversion rate ranges by sector:

| Sector | Average conversion rate | |---|---| | Fashion and apparel | 1.0% — 2.5% | | Consumer electronics | 0.8% — 1.8% | | Home and décor | 1.5% — 3.0% | | Health and nutrition | 2.5% — 4.5% | | Travel and tourism | 1.0% — 3.0% | | B2B services (forms) | 2.0% — 5.0% | | Lead generation landing pages | 5.0% — 15.0% |

Food and health ecommerce stores (such as DogfyDiet, one of the clients we work with at Boost) tend to show above-average rates because the product addresses a recurring, well-defined need.

Why benchmarks aren't everything

Industry data is a reference point, not an absolute target. An ecommerce store with high average order values and a complex purchase process can have a rate of 0.8% and still be perfectly profitable. What truly matters is the cost per conversion, the average order value and the margin.

The right question isn't "do I have a good rate?" but rather "am I leaving conversions on the table, and can I recover them profitably?"

How to improve your conversion rate?

Improving the conversion rate is the core of what we do at Boost. Over years of working with clients such as Catalonia Hotels, Grandvalira and Goodies Nutrition, we have identified the levers that generate real, measurable impact.

1. Measure before you optimise

Without reliable data, any improvement is a gamble. Before touching anything, you need a clear picture of where the bottlenecks are: which pages accumulate the most drop-offs, at which checkout step you lose users, which traffic segments convert least. Our methodology always starts from the measurement phase: Measure → Analyse → Decide → Optimise → Test.

2. Optimise page load speed

Load time is one of the most directly measurable conversion factors. Google indicates that for every additional second of load time on mobile, the probability of bounce increases by 32%. A website that loads in 2 seconds converts, on average, nearly twice as well as one that loads in 5.

3. Simplify the purchase or contact process

Every extra field in a form, every additional step in the checkout, and every unnecessary friction on the path to conversion reduces the rate. Audit your funnel through the user's eyes: how many clicks does it take to complete the action? Is information being requested that isn't strictly necessary?

4. Build social proof and trust

Users who don't know you need credibility signals before they convert. Verified reviews, real testimonials, security badges at checkout, customer numbers or success stories — everything that reduces perceived uncertainty improves conversion. This is especially relevant in health, wellness and premium product ecommerce.

5. Personalise the experience by segment

Not all users who arrive at your website have the same needs or the same stage of intent. Personalisation — showing different content, offers or messages based on traffic source, prior behaviour or device — can multiply the conversion rate in key segments. Tools like Mida, of which we are official partners, allow you to run A/B tests and advanced personalisations with statistical rigour.

6. Optimise your CTAs

The text, colour, position and context of your calls to action have a direct impact on conversion. A button that says "Get started" converts differently from one that says "Request information". Test variants, measure results and make decisions based on data, not intuition.

If you want to go deeper into specific strategies for ecommerce, we recommend reading our article on how to improve the ecommerce conversion rate without increasing spend.

What mistakes reduce your conversion rate?

Knowing best practices is just as important as identifying the mistakes that are penalising your conversion right now. These are the most common ones we find in the audit projects we carry out at Boost:

Lack of a clear value proposition. If users don't understand within the first few seconds what you do, who it's for, and why you're different, they leave. An ambiguous or buried value proposition is one of the primary conversion killers.

Checkout process with too many steps or no quick payment options. Cart abandonment in ecommerce averages around 70%. A large part of that abandonment happens at checkout due to unnecessary friction: mandatory account registration, lack of options such as Apple Pay or fast-pay alternatives, or forms that don't adapt to mobile.

Non-optimised mobile experience. In many markets, more than 60% of ecommerce traffic comes from mobile devices. If your mobile experience doesn't match your desktop experience in terms of speed, usability and conversion flow, you're losing more than half your opportunities.

No testing programme. Many businesses make design and UX decisions without validating them. Without a structured testing programme, it's impossible to know whether the changes you implement improve or hurt your rate. Deciding without testing is the exact opposite of working methodically.

Ignoring behavioural data. Qualitative analytics tools — heat maps, session recordings, on-page surveys — reveal why users aren't converting. If you only look at quantitative data (visits, bounce, conversion), you're seeing the what but not the why.

For a more detailed analysis of these mistakes, read our article on the 5 common conversion mistakes that are killing your business.

---

Improving the conversion rate is not a one-off action — it's a continuous process of measurement, analysis and optimisation. At Boost we have spent years helping companies — from startups to large brands — convert better without needing to invest more in acquisition.

If you want to know where your conversion currently stands and which levers have the most potential in your specific case, discover how we approach our CRO service and tell us about your situation.