Mathematical Foundations

Fraction to Percentage Calculator: How to Convert Any Fraction to a Percentage

Quick Answer & Key Takeaway (TL;DR)

To convert any fraction to a percentage, divide the numerator (top number) by the denominator (bottom number) and multiply by 100: (Numerator ÷ Denominator) × 100. For example, 3/8 becomes (3 ÷ 8) × 100 = 0.375 × 100 = 37.5%.

Fractions represent equal parts of a whole, and converting them using a fraction to percentage calculator makes comparing ratios, survey results, and recipes simple.

Method 1: Decimal Division (Universal Method)

Fraction to Percentage Conversion Chart
How fractions convert through decimal division into clean percentage values.
Fraction to Percentage Formula
Percentage (%) = (Numerator ÷ Denominator) × 100

Example: Convert 5/8 to a percentage: 5 ÷ 8 = 0.625 × 100 = 62.5%.

Common Fractions to Percentages Lookup Table

FractionDecimalPercentage
1/20.5050%
1/30.3333...33.33%
1/40.2525%
3/40.7575%
1/50.2020%
1/80.12512.5%
5/80.62562.5%

Convert any ratio instantly using our online Ratio Tool.

Frequently Asked Questions

How do you turn 3/4 into a percentage?
Divide 3 by 4 to get 0.75, then multiply by 100 to get 75%.
What is 1/3 as a percentage?
1 ÷ 3 = 0.3333..., which rounds to 33.33% (or 33 1/3%).

Elena Rostova

Applied Mathematics & Quantitative Analysis Editor

Quantitative math specialist specializing in computational precision, educational math models, and client-side web tools.

Put These Formulas into Practice

Test any formula with custom numbers using our verified, in-browser mathematical calculators: