Ratio Simplifier
Reduce two positive whole numbers using their greatest common divisor.
01 / INPUTS
whole
whole
02 / RESULT
Simplified ratio
2 : 3
- Simplified ratio
- 2 : 3
- Decimal
- 0.66666667
Calculation trace
- gcd(8, 12) = 44Greatest common divisor
- 8 ÷ 4 : 12 ÷ 4 = 2 : 32 : 3Simplified ratio
- 8 ÷ 12 = 0.6666670.66666667Decimal
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How it works
Both terms are divided by their greatest common divisor (GCD) to express the ratio in lowest terms, and the decimal value a ÷ b is also shown.
Assumptions & limits
- Simplification uses the integer GCD of the two terms.
- The second term must be non-zero for the decimal form.
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FAQ
- What does the decimal mean?
- It is the first term divided by the second — a 4:2 ratio is 2, meaning the first quantity is twice the second.
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Related calculators
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SOURCES
- OpenStax, Rice UniversityPrealgebra 2e ↗
Ratios and rates; reducing a ratio by dividing both terms by their greatest common divisor
Accessed 2026-08-23