Ratio Simplifier and Scaler
Enter any two numbers to reduce the ratio to its simplest whole-number form, see it as a decimal, and scale both sides by a factor.
How to simplify a ratio
- Enter the two numbers of your ratio, such as 1920 and 1080.
- Read the simplified ratio, for example 16:9, and its decimal value.
- Optionally enter a scale factor to multiply both sides.
Examples
Reduce a screen resolution
1920 : 1080
16 : 9 (decimal 1.7778)
Frequently asked questions
How does the tool simplify a ratio?
It divides both sides by their greatest common divisor (GCD). For 12:18 the GCD is 6, so the ratio reduces to 2:3.
What happens with negative numbers?
The ratio is reduced and the sign is moved to the first number, so 4:-6 becomes -2:3. The denominator is never left negative.
Can a ratio include zero?
Yes. A side of zero reduces to 0:1 or 1:0, and the decimal value is undefined when the second number is zero.
What does scaling a ratio do?
Scaling multiplies both sides by the same factor while keeping the proportion. 16:9 scaled by 2 is 32:18.
Is the calculation done privately?
Yes. Everything runs in your browser and nothing is sent to a server.
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