About the Conversion Funnel Calculator
A funnel shows how many people make it from one step to the next, for example visit, product view, add to cart, checkout and purchase. This conversion funnel calculator takes the number of users at each step and calculates step-to-step conversion, overall conversion from first to last step, and drop-off at every stage, displayed as a funnel chart.
It highlights the biggest leak, the step losing the largest share of people, and estimates the revenue impact of improving that step's conversion rate. That helps you prioritise: a small gain at a leaky step can be worth more than a big redesign elsewhere. Pull numbers from GA4 funnel explorations or your own records. The calculation runs in your browser.
How to use it
- Name each funnel step in order.
- Enter the number of users who reached each step.
- Review step conversion, drop-off and the biggest leak.
- Model an improvement at that step to see the revenue impact.
Frequently asked questions
How do I calculate funnel conversion rate?
Step conversion is users at a step divided by users at the previous step. Overall funnel conversion is users at the final step divided by users at the first step. Both are useful: one finds weak steps, the other tracks the whole journey.
Where can I get funnel data?
GA4 funnel explorations can show users at each step you define. E-commerce platforms, CRMs and form tools also report step counts. Make sure every step uses the same date range and user definition. Open and closed funnels can give different counts, so note which type you used.
Which funnel step should I fix first?
Start with the step that loses the largest share of users and has a clear, fixable cause. Then check the revenue impact estimate, since a leak close to purchase often has a bigger effect on revenue. Validate the cause with user feedback first.