Calculators
Pay Gap Calculator
Calculate unadjusted mean and median pay gaps between employee groups and a reference group.
- Runs in your browser
- Nothing uploaded
The tool
Enter your numbers below. Results update as you type, and nothing leaves your browser.
Everything you enter stays on your own machine. Nothing is sent to us or to anyone else, which you can confirm in your browser network tab.
What people use it for
- Preparing pay gap reports
- Board and ESG reporting
- Spotting representation issues
- Tracking progress over time
About this tool
What the Pay Gap Calculator does
An unadjusted pay gap compares the average or median pay of one group with a reference group across the organisation, regardless of role. Median gaps are less affected by a few very high earners. These figures show representation and progression patterns; a separate adjusted analysis is needed to test equal pay for equal work.
It also works as a DEI pay equity analyzer or a gender pay gap calculator.
Formula
- Mean gap = (reference mean − group mean) ÷ reference mean
- Median gap = (reference median − group median) ÷ reference median
- A positive gap means the group is paid less on average
Worked example
Using the starting values in the calculator above:
| Input | Value |
|---|---|
| Groups | 3 entries |
| Result | Value |
|---|---|
| Median pay gap (second row vs reference) | 10.5% |
| Mean pay gap (second row vs reference) | 13.4% |
| Employees covered | 126 |
How to read the result
Very small groups produce unstable figures and can identify individuals; many reporting rules set minimum group sizes.
Investigate the drivers: gaps usually reflect who holds senior or higher-paid roles, as well as any unequal pay for the same work.
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Questions
Questions about this tool
The things clients actually want to know — costs, timelines, ownership and what happens after launch.
The difference in average or median pay between groups across the whole organisation, not controlling for role.
No. Unequal pay means paying differently for the same or equivalent work; a gap can also come from role distribution.
It is less distorted by a small number of very high or low earners.
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