Percentage to Fraction Converter

Convert any percentage to its simplest fraction form instantly.

%
Enter the percentage value (e.g., 20, 33.3, 150)

Simplified Fraction

0/1

How to Convert a Percentage to a Fraction

The Core Concept

To convert a percentage to a fraction, you simply take the percentage number and place it over 100 as the denominator. This is because "percent" literally means "of 100."

The 3-Step Process

  1. Write it over 100: Take the percentage (remove the % sign) and write it as the numerator of a fraction with 100 as the denominator.
  2. Remove decimals: If the percentage contains a decimal, multiply both the top and bottom by 10 for every decimal place until the top is a whole number.
  3. Simplify: Reduce the fraction to its simplest form by dividing both the numerator and denominator by their Greatest Common Divisor (GCD).

The Formula

Core Formula
Fraction = Percentage / 100

Step-by-Step Example

Example: Convert 60% to a fraction

Step 1: Write over 100 → 60/100
Step 2: Find GCD of 60 and 100 → 20
Step 3: Divide both by 20 → (60 ÷ 20) / (100 ÷ 20) = 3/5
Result: 3/5
Percentage Simplified Fraction
10% 1/10
20% 1/5
25% 1/4
50% 1/2
75% 3/4
12.5% 1/8

From Percentage to Fraction

Converting percentages to fractions reveals exact values that decimals can only approximate. 33.33...% is exactly 1/3. This precision matters in mathematics, science, and any context requiring exact calculations.

Conversion Steps

  • Step 1: Write percentage over 100 (25% = 25/100)
  • Step 2: Find the GCD (greatest common divisor)
  • Step 3: Divide both numbers by GCD (25/100 = 1/4)

Common Conversions

50% = 1/2, 25% = 1/4, 20% = 1/5, 10% = 1/10. Trickier: 12.5% = 1/8, 6.25% = 1/16, 66.67% ≈ 2/3, 16.67% ≈ 1/6. For decimals that don't terminate evenly, find the closest simple fraction - calculators can help identify these relationships.

Frequently Asked Questions

How do I convert a percentage to a fraction?

Write the percentage over 100, then simplify. 75% = 75/100 = 3/4.

What is 33.33% as a fraction?

33.33% (repeating) equals exactly 1/3. Similarly, 66.67% = 2/3.

How do I simplify a fraction like 60/100?

Find the Greatest Common Divisor and divide. 60/100 = 3/5.

🔍 Authoritative References

For more information about mathematical conversions and calculations, consult these trusted sources:

  • NIST - National Institute of Standards and Technology
  • Wolfram MathWorld - Comprehensive mathematical reference