Simplify Fraction Calculator
Reduce any fraction to lowest terms.
Enter your values
Results update instantly as you type — no submit needed.
Results
- Simplified fraction
- 2/3
- Greatest common divisor
- 42
- Mixed number
- 2/3
- Decimal
- 0.666667
Working
- 1GCD(84, 126) = 42
- 284 ÷ 42 = 2, 126 ÷ 42 = 3
Quick answer
A fraction is simplified by dividing the numerator and denominator by their greatest common divisor.
a/b ÷ gcd(a,b)
How to use the Simplify Fraction Calculator
- 1Enter the numerator.
- 2Enter the denominator.
- 3Read the fraction in lowest terms.
Frequently asked questions
How do I find the GCD?
Use the Euclidean algorithm: repeatedly replace the larger number with the remainder of dividing it by the smaller until one is zero.
Is 6/8 the same as 3/4?
Yes, they are equivalent fractions. 3/4 is the simplified form because 3 and 4 share no common factor above 1.