Conversion Rate Calculator
Work out the conversion rate of a page, campaign or shop and how precise it is. Enter visitors and conversions, and optionally the value of a conversion and a target rate. The calculator shows the rate, a 95% confidence range – small samples give wide ranges – visitors per conversion, revenue and value per visitor, and how many more conversions the target rate would bring.
- Runs in your browser
- No sign-up
- Free to use
How to use Conversion Rate Calculator
- Enter visitors and conversions.
- Add the value per conversion if known.
- Set a target rate.
- Read the rate and its range.
Conversion Rate Calculator features
Confidence range
Wilson score interval.
Value per visitor
Revenue ÷ visitors.
Target gap
Extra conversions needed.
Any conversion
Sales, sign-ups, leads.
Formula shown
Every result explains how it was calculated.
Any currency
Choose from 30+ currencies; amounts are formatted for it.
When to use Conversion Rate Calculator
- Landing page reports.
- Ecommerce analytics.
- Comparing campaigns.
- Setting CRO goals.
Conversion Rate Calculator FAQ
Why a confidence range?
With 50 visitors, a 4% rate could easily be 1% or 13%. The range shows how much the number might change with more traffic.
Should I use sessions or users?
Either, but be consistent: sessions give a lower rate than users.
What is a good conversion rate?
It varies hugely by industry, traffic source and price; ecommerce often sits around 1–4%.
Can I compare two pages?
Overlapping ranges mean the difference may be chance; use an A/B test significance calculator.
Rates and sample sizes
A conversion rate is only as reliable as the traffic behind it. Wait for enough visitors before acting on small differences, especially for pages with few conversions.
Value per visitor combines conversion and order value and is often the better number to optimise.
Use consistent definitions over time: count customers and revenue the same way every month, separate one-off fees from recurring revenue, and compare cohorts rather than mixing old and new customers.
Benchmarks from other companies are only a rough guide, because business models, prices and customer types differ. Your own trend from month to month is usually more informative than a comparison with an industry average.