Ratio & proportion tools
Ratio Calculator
Enter any ratio. Understand it, simplify it, split it, scale it, convert it or solve with it.
Simplify ratios, scale quantities, solve missing values and compare proportions — with exact arithmetic and every step shown.
- Exact arithmetic
- Steps shown
- Runs in your browser
12 : 18 → 2 : 3
Use a colon or the word “to”. Decimals (1.5:2.5), fractions (1/2 : 3/4) and multi-part ratios (2:3:5) all work.
Exact result
3 : 2
60% : 40% · 5 total parts
The ratio 3:2 divides into 60% and 40%.
- Total parts
- 5
- Simplest form
- 3 : 2
- First vs second
- 1.5×
Working
- All parts are already whole numbers.
- The parts share no common divisor above 1.
- Simplest form: 3 : 2.
Split a total in this ratio
60 · 40
Equivalent ratios
- 3 : 2
- 6 : 4
- 9 : 6
- 12 : 8
- 15 : 10
What a ratio tells you
A ratio compares quantities in parts. In 3:2 there are five parts in total, so the first quantity is three-fifths of the whole and the second is two-fifths. Every answer on SnapRatios comes from the same calculation engine, so the simplified form, the percentages and the split of a total always agree.
Answer first, working underneath
The result appears above the explanation, with the steps kept short and readable. Nothing you type is sent anywhere: calculations run in your browser.