Ratio converter
Ratio to Percentage Calculator
Convert a two-part ratio to percentages. See both A as a percentage of B and each part as a share of the whole.
Convert ratio to percentages
A as % of B
A's share of total
B's share of total
Working:
Important: “ratio to percentage” can mean two different things. For 2:3, the first value is 66.67% of the second, while the two values represent 40% and 60% of the total. This calculator shows both.
Example: 2:3
To find 2 as a percentage of 3: 2 ÷ 3 × 100 = 66.67%. To express the ratio as shares of the whole, add the parts (2 + 3 = 5), then calculate 2/5 = 40% and 3/5 = 60%.
Ratio to percentage FAQs
Does 2:3 mean 66.67% or 40%?
Both figures can be useful, but they answer different questions. 2 is 66.67% of 3. As shares of the total 5 parts, the ratio is 40% to 60%. This calculator shows both.
How do you convert the first part of a ratio to a percentage of the second?
Divide the first value by the second and multiply by 100.