Ratio Calculator & Simplifier
Simplify a ratio like 12:18 to its lowest terms (2:3) and compare to a target ratio.
Result
Simplified ratio
2.0000 : 3.0000
12 : 18 → 2 : 3.
- GCD6
- Decimal0.6667
- Percentage40.0% / 60.0%
- Sum30.0000
Step-by-step
- Original: 12 : 18.
- GCD(12, 18) = 6.
- Simplified: (12 ÷ 6) : (18 ÷ 6) = 2 : 3.
How to use this calculator
- Enter both quantities.
- Read the simplified ratio plus the decimal and percentage forms.
About this calculator
A ratio compares two quantities by division. Simplifying a ratio means dividing both numbers by their greatest common divisor, just like simplifying a fraction. 12:18 simplifies to 2:3 (dividing both by 6). The calculator also shows the decimal equivalent and percentage split for a quick comparison.
Frequently asked
For every 2 of the first thing, there are 3 of the second. If you have 10 of the first, you have 15 of the second (multiply both sides by 5).
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