Ratio Calculator

Simplify and scale ratios.

Ratio Calculator
Live 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

Related calculators

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