Ratio Calculator
A ratio compares two quantities. This tool reduces A:B by their greatest common divisor and can scale the ratio so the first part equals a target value.
Simplified2 : 3
A as % of total40%
Scaled B3when A is scaled to the target
Formula
Divide both parts by gcd(A, B). Scale: B' = B × (target ÷ A).
How to use this calculator
- Enter A and B.
- Optionally set a new A.
- Read the reduced ratio and scaled B.
Examples
8:12
Simplifies to 2:3.
FAQ
Can I use decimals?+
Yes. Simplification uses a rounded gcd so tiny floats still reduce.
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