A fraction is in lowest terms when numerator and denominator share no factor except 1.
About this calculator
A fraction is in lowest terms when numerator and denominator share no factor except 1. Twenty-four over thirty-six divides by twelve to become two-thirds.
Enter any numerator and denominator. The calculator finds the GCD, divides both, and shows whether the input was already reduced.
Simplifying is the first step before adding fractions or comparing sizes. Compare results with the [[compare-fractions]] calculator. Turn the answer into a decimal with [[fraction-to-decimal]]. Build mixed numbers using the [[mixed-numbers]] calculator.
Common uses
- Reduce homework fractions before adding
- Check whether two fractions can be cross-multiplied fairly
- Prepare final exam answers in lowest terms
- Verify manual GCD division quickly
Frequently asked questions
How do you simplify 24/36?
GCD(24, 36) = 12. Divide both by 12: 24/36 = 2/3.
Can a fraction simplify to a whole number?
Yes. 8/4 simplifies to 2/1, which is the whole number 2.
Should negative signs stay on the numerator?
Convention puts the sign on the numerator in lowest terms: −3/4 rather than 3/−4.
Is 5/5 already simplified?
It simplifies to 1. The fraction equals one whole.