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Percentage Calculator

Solve common percentage problems instantly: what is X% of Y, what percentage is X of Y, and percentage increase or decrease between two numbers. Enter the values you have and get the answer immediately - useful for discounts, tips, grades, or general math.

  • Nothing leaves your device
  • Runs entirely in your browser
  • Free, no account needed
Use Percentage Calculator - free

Frequently asked questions

What percentage calculations are supported?

Three common cases: finding X% of a number, finding what percentage one number is of another, and calculating percentage increase or decrease between two values.

Can it calculate percentage change with negative results?

Yes, if the second value is lower than the first, the result is shown as a negative percentage (a decrease).

Does it round the result?

Results are shown to two decimal places by default for readability.

Calculate percentages instantly - free.

Open Percentage Calculator
  • Nothing leaves your device
  • No upload required
  • No account needed
  • Unlimited use, always free