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SnapRatios

Ratio & proportion tools

Simplify Ratio

Reduce any ratio to its simplest whole-number form — including decimals, fractions and three-part ratios.

Two or more parts, including decimals (1.5:2.5) and fractions (1/2 : 3/4).

Exact result

2 : 3

12:18 simplified

Working

  1. Every part is already a whole number.
  2. Greatest common divisor (GCD) = 6.
  3. 12 ÷ 6 = 2
  4. 18 ÷ 6 = 3

How simplifying works

Decimal and fractional parts are first scaled to whole numbers, then every part is divided by the greatest common divisor. 12:18 shares a divisor of 6, so it reduces to 2:3. A ratio is already in its simplest form when the greatest common divisor of its parts is 1.