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All PercentEase Tools

PercentEase offers 5 free, client-side percentage calculation modes covering percentage of a number, percentage ratio, percentage change, reverse percentage, and increase or decrease — all running instantly in your browser across 20 languages.

Last updated: March 2026

1

Percentage of a Number

Find X% of Y — the most common percentage calculation.

2

Percentage Ratio

Determine what percent X is of Y — useful for grades, stats, and proportions.

3

Percentage Change

Calculate the percentage increase or decrease between two values.

4

Reverse Percentage

Find the original number before a percentage was applied.

5

Increase or Decrease by Percentage

Add or subtract a percentage from any number — perfect for tips, discounts, and markups.

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PercentEase is part of the Kymata Labs free calculator portfolio. All tools run client-side with no data collection.

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All tools are properties of Kymata Labs LLC.