Free CRO Tool

A/B Test Win Rate Calculator

The CRO dashboard I use on every engagement. Track whether you're on pace to hit your annual testing goal, know when to cut a losing test early, and see whether a client's conversion rate is really trending up over time.

Are you on pace?

On pace

required win rate, remaining tests

Your numbers

%
trailing pace: —/mo

Where you stand

Current win rate
Days remaining in year
Test capacity remaining
Wins needed, remaining tests

Pacing to goal

Your wins Target pace

Solid = wins banked to date. The gray dashed line is the steady pace across the whole year needed to hit target; the colored dashed line, starting today, is where you land if your current pace holds.

Year at a glance

Time elapsed
Projected tests completed
Wins toward year total

How this works: your remaining test capacity is your monthly pace × the months left in the year. Wins needed is how many of those remaining tests have to land a positive, significant result for your year-end win rate to reach your target — shown as a count because "win rate on the tests I haven't run yet" isn't something you can act on directly, but a number of tests to close out is. If that count is bigger than your remaining capacity, no realistic pace closes the gap this year; if it's at or below what your current win rate would already produce, you're on track.