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
Percentage of a Number
Find X% of Y — the most common percentage calculation.
Percentage Ratio
Determine what percent X is of Y — useful for grades, stats, and proportions.
Percentage Change
Calculate the percentage increase or decrease between two values.
Reverse Percentage
Find the original number before a percentage was applied.
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.