Chi-Square A/B
Calculate Chi-Square A/B instantly with the exact formula and a worked example.
Chi-Square A/B
Visitors A
Conversions A
Visitors B
Conversions B
χ²
4.4215
Conversion rate A
10%
Conversion rate B
13%
Lift of B over A
30%
p-value
0.0355
Significance (α = 0.05)
Difference is significant
More about: Chi-Square A/B
What it calculates
The “Chi-Square A/B” calculator computes χ² from 4 parameters: visitors a, conversions a, visitors b, conversions b.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters Visitors A = 1,000, Conversions A = 100, Visitors B = 1,000, Conversions B = 130 the result is 4.42.
How to use
- Enter visitors a, conversions a, visitors b and conversions b — each field above is adjustable with a slider.
- χ² is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
Related calculators
FAQ
How is Chi-Square A/B calculated?
The Chi-Square A/B calculator computes χ² from visitors a, conversions a, visitors b, conversions b. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Chi-Square A/B calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
More calculators in this category
Explore related free tools