Percentage Calculator

Find a percent of a number, or what percent one number is of another.

Interactive calculator
%
Result
Result
20% of 250
50
Number minus %
200
Number plus %
300
What it is

Percentages translate 'parts per hundred'. Use this calculator for tips, discounts, tax, and anything else expressed as a percent.

The formula

Part = (Percent ÷ 100) × Whole

Why it matters

Understanding percentage calculator helps you make a better-informed decision before you commit money or time.

Worked examples

Try the example

Use the defaults above as a starting point — then adjust the inputs to match your situation.

Common pitfalls
  • Double-check the units on every input — most errors come from mixing units.
  • Round at the end, not in the middle of the formula.

Frequently asked questions

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