Ratio to Percentage
Convert any A:B ratio to two percentages summing to 100%. Defaults: 3:1 = 75% : 25%.
Convert any A:B ratio to two percentages summing to 100%. Examples below.
Worked examples
3:1 = 75% : 25%
1:1 = 50% : 50%
4:1 = 80% : 20%
2:5 = 28.57% : 71.43%
Frequently asked questions
What's the formula?
decimal → %: multiply by 100. % → decimal: divide by 100. Fraction → %: top divided by bottom, ×100. Ratio A:B → %: A ÷ (A+B) × 100.
Do these work for any number?
Yes — including percentages over 100% (where the decimal exceeds 1, or the numerator exceeds the denominator).