Everyday Tools
Ratio Calculator
Simplify a ratio of two or three numbers to its lowest terms, useful for recipes, mixing solutions or scaling drawings.
Your results
Simplified ratio2 : 3
Calculation breakdown
- Simplified ratio
- Each part ÷ GCD of all parts
Worked example
A concrete mix of 4 parts cement to 6 parts sand simplifies to 2 : 3.
Assumptions
- Leave the third field at 0 to work with a two-part ratio.
- Decimal inputs are rounded to whole numbers before simplifying.
How this calculator works
This calculator simplifies a ratio of up to three numbers to its lowest whole-number terms by dividing each part by their greatest common divisor. It's useful for scaling recipes, mixing concrete or comparing quantities.
Frequently asked questions
Can I simplify a ratio with three parts?
Yes, enter a third value and the calculator will simplify all three numbers together using their combined greatest common divisor.
What if one value is zero?
A zero value is treated literally, so the simplified ratio will also show zero in that position.
Does it work with decimals?
The calculator is designed for whole numbers; decimal inputs are rounded before simplifying.
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