Scenario 1
Recipe scaling
Recipe ratio 2:3 (oil:flour). To make 500g flour: oil = 500 × (2÷3) = 333g.
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Ratio Calculator
Simplify any ratio and scale it to exactly what you need.
Adjust your inputs
Results update instantly as you type or drag.
1 – 1,000,000
1 – 1,000,000
1 – 1,000,000
Enter a target value for A to find scaled B
Quick insights
Simplified B
2
Scaled B (for given A)
6
Quick answer
How do you simplify a ratio?
Divide both numbers by their greatest common divisor (GCD). 12:8 simplifies to 3:2 (÷4).
How it works
From inputs to result in four steps
A quick walkthrough of what this calculator does behind the scenes.
- 1
Enter two values (A and B).
- 2
Optionally enter a target scale to find the equivalent.
Formula
The math behind the number
No black box — here's exactly how the result is computed.
Formula
GCD(a, b) = GCD(b, a mod b) [Euclidean algorithm]
Simplified ratio = A ÷ GCD : B ÷ GCD
Equivalent (scaled by n) = A×n : B×nExamples
Real-world scenarios
See how the numbers play out for typical use cases.
Scenario 2
Screen resolution
1920:1080 simplifies to 16:9.
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