Fraction Simplifier
Reduce any fraction to lowest terms instantly.
Enter a fraction like 8/12 and get its simplest form right away, plus the decimal value. The simplifier divides both numbers by their greatest common divisor, which is exactly how your math teacher wants it done. A handy checker for homework and quick classroom answers.
How it's calculated
Both the numerator and denominator are divided by their greatest common divisor (GCD), which leaves the fraction in lowest terms.
Frequently asked questions
How do you simplify a fraction by hand?
Find the greatest number that divides both the top and bottom evenly, then divide both by it. For 8/12 the GCD is 4, so 8 ÷ 4 = 2 and 12 ÷ 4 = 3, giving 2/3.
What does 'lowest terms' mean?
A fraction is in lowest terms when no number except 1 divides both the numerator and denominator. For example, 2/3 is in lowest terms but 8/12 is not.
Can this simplify improper fractions?
Yes — it reduces the fraction to lowest terms first. An improper fraction like 10/4 becomes 5/2, which you can also read as 2½.