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Math calculator

Fraction to Percent Calculator

Convert a numerator and denominator into a percentage.

✓ Tested formula✓ Instant result✓ Private by design
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Enter your valuesResults update instantly as you type.

✓ Your numbers stay on this device.

Understand the answer

Formula and method

FormulaPercentage = numerator ÷ denominator × 100.

Dividing gives the decimal value of the fraction; multiplying by 100 expresses that value per hundred.

Worked example

3/8 = 0.375 = 37.5%.

How to use this calculator

  1. Enter the values using the labels and units shown.
  2. Review the live result and supporting details.
  3. Check the formula, example and assumptions before using the answer.

Assumptions and limits

  • The denominator must not be zero.

Reference

Formula reviewed 2026-07-15

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