Simplify Fractions Calculator

Reduce a fraction to the simplest form with this online calculator for simplifying fractions.

Fill in the lengths of both legs (a and b) on a right triangle to determine the hypotenuse.

Numerator of Fraction (top number)
Denominator of Fraction (bottom number)

Calculate the simplest form of a fraction.

How do you simplify a fraction?

Example: For the fraction 33/99 the number 33 is the numerator and
99 is the denominator.

First, find the greatest common factor of the two numbers.
GCF = 33

Second, divide both the numerator and denominator by the GCF.

Numerator is found from 33/33 = 1
Denominator is found from 99/33 = 3

The fraction 33/99 reduced to the simplest form is 1/3.

Fraction Basics

Denominators of a Fraction

When you look at a fraction, there are three basic parts. A top number, a bottom number, and that little line that separates them. That bottom number is called a denominator. The denominator is basically the total possible parts available. If we had a cake and cut it into 8 slices, the total possible slices to that cake would be 8. So if we were to right a fraction about that cake, the denominator would be 8.

Numerators in a Fraction

So, now that you know what a denominator is, let’s look at the top number. The top number is the numerator. This number is how many actual parts you have out of the total available. If we look at our cake again, it’s been cut into 8 pieces. If an evil coworker comes by and eats two pieces, that leaves you with 6 pieces. Now you have a total of 6 pieces from the 8 that are possible for a full cake. The 6 pieces would be the numerator and the 8 pieces would be the denominator.

So, when you open the refrigerator at work, you will see that there are only 6 pieces left of the total of 8 pieces that make up a full cake. You now have a fraction of a cake. This would be 6/8 of a cake.