What is the Conversion Rate Calculator?

Conversion rate is the share of visitors who take the action you want — buy, call, book or submit a form. Enter any two of visitors, conversions and conversion rate and the calculator solves the third, so you can measure results or plan the traffic you need for a goal.

Running a test? The A/B test section compares two versions and tells you whether the difference is statistically significant or could be chance.

Key features of the Conversion Rate Calculator

• Solve for any value

  Conversion rate, visitors or conversions.

• Goal planning

  Visitors needed to hit a conversion target.

• A/B significance test

  Two-proportion z-test with confidence level and relative uplift.

• Plain-English verdict

  A clear answer on whether to trust the result.

How to use the Conversion Rate Calculator

1. Enter your numbers

   Any two of visitors, conversions and rate.

2. Plan a goal (optional)

   Enter the conversions you want per month.

3. Compare variants

   Add visitors and conversions for versions A and B.

Conversion rate formula

Conversion rate = conversions ÷ visitors × 100. A landing page with 2,400 visitors and 96 leads converts at 4%. Doubling conversion rate doubles leads from the same traffic and halves your cost per lead.

When is an A/B test result significant?

A result is usually called significant when there is less than a 5% chance the difference happened at random (95% confidence). Small samples swing wildly, so let tests run until each version has enough conversions, and avoid stopping the moment one version pulls ahead.

Pro tips from our PPC and SEO team

• Track micro-conversions (calls, clicks to call) as well as forms.
• Test one big change at a time.
• Run tests for at least one full week to cover weekday patterns.

Conversion Rate Calculator: frequently asked questions

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