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Conversion Rate Calculator

Conversion rate, the uplift between two rates, and what it is worth.

Business Calculators Free, no sign-up Runs in your browser

Optional. Adds revenue figures.

Optional. Shows what reaching it would be worth.

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Conversion rate
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Per 1,000 visitors
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Revenue
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Uplift to target
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Extra revenue at target
Conversion rateConversionsRevenueAgainst now

About the Conversion Rate Calculator

Conversion Rate Calculator turns visitors and conversions into a rate, and then into money. The rate itself is a division; what makes it useful is seeing what a change in it is worth on your existing traffic, which is the comparison that decides whether optimisation work is worth doing.

The uplift figure is expressed as a relative change, because that is how test results are reported. Moving from 3 per cent to 4 per cent is a one percentage point gain and a 33 per cent uplift, and those two numbers sound very different in a report. Both are shown so neither can be mistaken for the other.

The table runs several rates against your traffic so the shape of the opportunity is visible. On high-value conversions a fractional improvement is worth more than a large increase in traffic, which is the usual argument for working on the funnel before buying more visitors.

This is arithmetic, not financial advice. It tells you what the numbers do; it cannot tell you whether a decision is right for your circumstances. Fees, taxes and local rules vary, so check anything that matters against the actual offer and speak to someone qualified before committing.

Everything is worked out inside your browser. Nothing you enter is uploaded, logged or stored, which matters for the financial calculators in particular: the figures you put into them are nobody else's business.

How to use the Conversion Rate Calculator

  1. Enter visitors or sessions, conversions and value of a conversionDecimals are fine, and thousands separators are accepted and ignored.
  2. Read the conversion rate, per 1,000 visitors and revenueThe figures update as you type. The Calculate button is there if you would rather press something, but nothing waits for it.
  3. Copy or check the resultCopy the summary with the copy button, or open the table to check it row by row.

Features

  • Shows conversion rate, per 1,000 visitors, revenue, uplift to target and extra revenue at target together, so you are not running it twice
  • A results table you can read across
  • Updates as you type, with no button to press and no page reload
  • Copy the result in one click
  • Free, no sign-up, and it runs entirely in your browser

Who uses this tool

The conversion rate calculator is used by writers, developers, students, marketers and anyone else who needs the job done once without installing software. Common cases include:

  • Reporting a landing page conversion rate
  • Working out what an A/B test win is worth
  • Comparing conversion rates between channels
  • Setting a realistic improvement target

Frequently asked questions

Should I use visitors or sessions?

Be consistent, and say which. Sessions are usually more numerous than visitors, so a rate calculated on sessions is lower. Mixing the two produces a figure that means nothing.

What is a good conversion rate?

It depends on the industry, the traffic source and what counts as a conversion. Your own trend over time is far more informative than a benchmark from somebody else's business.

Percentage points or percentage uplift?

Both are shown. Three per cent to four per cent is one percentage point and a 33% uplift; reporting the second without saying so overstates the change.

If the conversion rate calculator is not quite what you need, these other free tools solve closely related problems, and there are 19 more in business calculators.

CPA Calculator

Cost per acquisition with the break-even figure.

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ROAS Calculator

Return on ad spend with profit and break-even ROAS.

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Churn Rate Calculator

Customer and revenue churn with retention and lifetime.

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Checked and rebuilt on 2026-10-14. The method this calculator uses is described in the section above, and corrections go through the contact page.