Conversion Funnel Calculator
Step and overall conversion rates for any funnel from stage counts, the weakest step, the value lost at each drop-off, and what extra points at one step add.
Where a funnel leaks, what that leak is worth, and which step repays attention first — from the stage counts you already have, with no benchmark rates assumed.
Example: 10,000 visitors → 800 sign-ups (8 %) → 300 trials (37.5 %) → 60 paid (20 %): 0.6 % overall. Two extra points on trial-to-paid would add 6 customers; two on visitor-to-sign-up, 15.
Each stage over the one before.
The product is the funnel.
Step versus overall rates, how a leak is valued, and what the uplift table does and does not claim.
Step and overall conversion
A funnel is an ordered list of counts for one cohort: how many reached each stage. Each step rate is a stage divided by the stage before it; the overall rate is the last stage over the first, and equals the product of the step rates. Because a funnel only narrows, a stage larger than its predecessor is refused rather than silently accepted — it usually means mixed periods or double counting. The weakest step is the lowest step rate, which is not always the biggest opportunity.
Valuing the leak
Give the value of one final conversion and each drop-off is priced: the units lost at a step, times the conversion they would still have had to go through downstream, times the value. Lost visitors at the top are worth little each; lost trials just before payment are worth almost the full amount. That is why the money leak and the weakest rate can point at different steps.
The uplift table
Add a number of percentage points to one step at a time, holding the others fixed, and the table shows the new final count. It is arithmetic, not a forecast: it says what an improvement would be worth, not whether it is achievable, and improvements at different steps do not simply add. Use it to rank where to test; use an A/B test to find out. Nothing leaves the browser; the same four anonymous usage counts as the rest of the site apply.
SOURCES
- Funnel step conversion and overall conversion as ratios of successive stage counts — definitions only; no industry benchmark adopted
Last reviewed 19 September 2026. How results are checked: How we verify.