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Fraction Calculators

Fraction Simplifier

Reduce any fraction to lowest terms by dividing by the greatest common divisor, with the GCD and steps shown.

Enter values

Results update as you type.

Result

Simplified

2/3

GCD
42
Mixed number
2/3
Decimal
0.(6)
Step-by-stepShow
  1. GCD(84, 126) = 42
  2. 84 ÷ 42 = 2, 126 ÷ 42 = 3

About the Fraction Simplifier

Reduce any fraction to lowest terms by dividing by the greatest common divisor, with the GCD and steps shown.

Also known as: simplify fractions, reduce fraction, lowest terms calculator, fraction reducer, simplest form.

How to use this calculator

  1. Enter numerator, denominator.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Open “Step-by-step” to see how the answer was worked out.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

a/b = (a ÷ GCD) / (b ÷ GCD)

Worked example

Using the values pre-filled in the calculator above:

  • Numerator = 84
  • Denominator = 126

the calculator returns:

  • Simplified: 2/3
  • GCD: 42
  • Mixed number: 2/3
  • Decimal: 0.(6)

Working

  1. GCD(84, 126) = 42
  2. 84 ÷ 42 = 2, 126 ÷ 42 = 3