Ratio Calculator
Simplify and scale ratios.
Interactive calculator
Result
Simplified
2 : 3
Decimal (A÷B)
0.67
Scaled (A=1)
1 : 1.50
What it is
Ratios compare two quantities. The simplified form (3:4 vs 12:16) is easier to read and use.
The formula
Simplified ratio = A:B divided by their greatest common divisor.
Why it matters
Understanding ratio calculator helps you make a better-informed decision before you commit money or time.
Worked examples
Try the example
Use the defaults above as a starting point — then adjust the inputs to match your situation.
Common pitfalls
- Double-check the units on every input — most errors come from mixing units.
- Round at the end, not in the middle of the formula.
Frequently asked questions
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