Percentage Calculator

Calculate percentages, increases and decreases instantly.

15% of 10015.00
100 + 15%115.00
100 − 15%85.00

How to use this tool

  1. 1Choose calculator typeSelect the calculation type: simple percentage, percentage increase/decrease, or ratio.
  2. 2Enter numbersInput your base values and parameters into the fields.
  3. 3View resultRead the computed values, percentages, and steps instantly.

What this tool is useful for

  • ✓Calculating discounts, sale pricing, and taxes during shopping.
  • ✓Estimating school or university grade percentages.
  • ✓Computing business profit margins, interest rates, or investment growth.

Privacy & processing

All math calculations are done instantly in your browser via local JavaScript.

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