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Conversion Rate Uplift Calculator

Free Calculator

Turn your control and variant conversion rates into relative and absolute uplift β€” instantly and privately.

100% private

Runs in your browser β€” no numbers leave your device.

Your numbers

%

Your control (original) conversion rate.

%

The conversion rate of your new variant.

Relative uplift

30.0%

(variant βˆ’ baseline) Γ· baseline β€” the percentage improvement over the control.

Absolute uplift

1.50%

Variant rate minus baseline rate, in percentage points.

How it works

1

Enter your baseline

Type your control (original) conversion rate as a percentage.

2

Enter your variant

Add the conversion rate your new version achieved.

3

Read the relative uplift

See how much better the variant did, as a percentage of the baseline.

4

Check the absolute uplift

The raw difference in percentage points between the two rates.

Turn a small uplift into a big win

Reverze rebuilds your App Store screenshots into higher-converting variants in minutes β€” so the uplift you measure here is one you can actually ship.

How to calculate conversion rate uplift

Conversion rate uplift measures how much better one version converts than another β€” the core number behind every A/B test and ASO experiment. This conversion rate uplift calculator reports it two ways. Relative uplift is the percentage improvement over the control: (variant βˆ’ baseline) Γ· baseline Γ— 100. Lift a 5% conversion rate to 6.5% and the relative uplift is 30%. Absolute uplift is the raw gap between the two rates in percentage points β€” here, 1.5 points (6.5% βˆ’ 5%).

The distinction matters because the two tell very different stories. A "30% uplift" sounds huge, but if the baseline is tiny, the absolute gain in real conversions can be small β€” and the reverse is true too. Report relative uplift to show the size of the win, and absolute uplift to show what it means for volume. When you forecast revenue, apply absolute uplift to your actual traffic; when you compare the strength of two tests, relative uplift keeps them on the same scale. Pair both with a significance check to make sure the uplift is real, not noise.

Frequently asked questions

How do I calculate conversion rate uplift?
Subtract the baseline (control) conversion rate from the variant rate, divide by the baseline, and multiply by 100. For example, going from 5% to 6.5% is (6.5 βˆ’ 5) Γ· 5 Γ— 100 = 30% relative uplift. This calculator shows that instantly, along with the absolute uplift in percentage points.
What is the difference between relative and absolute uplift?
Relative uplift is the improvement as a percentage of the baseline ((variant βˆ’ baseline) Γ· baseline). Absolute uplift is the raw difference between the two rates, measured in percentage points. Going from 5% to 6.5% is a 30% relative uplift but only a 1.5 percentage-point absolute uplift.
What is a good conversion rate uplift?
It depends on your baseline and traffic, but many successful A/B tests land in the single-digit to low-double-digit percentage range for relative uplift. A large relative uplift on a small baseline may still move few real conversions, so always weigh it against absolute uplift and statistical significance.
Can conversion rate uplift be negative?
Yes. If the variant converts worse than the control, both the relative and absolute uplift are negative β€” meaning the change hurt performance. That is a valid, useful result: it tells you to keep the original or try a different idea.

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