Fraction → Decimal

Turn a fraction into its decimal and percentage forms by dividing the numerator by the denominator. Useful for measurements, odds and quick conversions.

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Worked example

Decimal: 0.375 · Percent: 37.5%

How it’s solved

Worked on the example above, step by step — follow along and you can do it on paper next time, no tool required.

A fraction is just division waiting to happen: the top number divided by the bottom number.
Divide numerator by denominator
3 ÷ 8 = 0.375
Multiply by 100 to read it as a percent
0.375 × 100 = 37.5%

Learn the method

Inputs

Numerator
3
Denominator
8

Frequently asked

What is 3/8 as a decimal?

0.375, or 37.5%.

What if the denominator is zero?

Division by zero has no value, so the result is undefined — use a non-zero denominator.