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A/B testing significance calculator

Ensure you only ‘switch on’ tests that drive positive change within your business

Is my A/B test a winner?

What is it?

Whether your test is significant depends on a number of factors, including the expected uplift, the number of visitors tested and the amount of conversions you obtain.

What kind of test are you running?

Small effect (2%)

- minor design changes

Medium effect (5%)

- targeted personalisations or 3rd party technology

Large effect (10%)

- discounts or major site changes

What kind of test are you running?