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Fraction Calculators

Fraction Calculator

Add, subtract, multiply and divide fractions and mixed numbers. Get the simplified answer, mixed number and exact decimal.

Enter values

Results update as you type.

Result

Result

17/12

3/4 + 2/3 = 17/12

Mixed number
1 5/12
Decimal
1.41(6)
Step-by-stepShow
  1. Common denominator: 4 × 3 = 12
  2. 9/12 + 8/12 = 17/12
  3. Simplify: 17/12

About the Fraction Calculator

Enter two fractions such as 3/4, mixed numbers like 1 1/2, whole numbers or decimals, choose an operation and get the result in lowest terms, as a mixed number and as a decimal (repeating digits shown in brackets).

Also known as: fractions calculator, mixed fraction calculator, fraction math, add fractions, fraction solver.

How to use this calculator

  1. Enter first fraction, operation, second fraction.
  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 + c/d = (ad + bc)/bd · a/b × c/d = ac/bd · a/b ÷ c/d = ad/bc

Worked example

Using the values pre-filled in the calculator above:

  • First fraction: 3/4
  • Operation: Add (+)
  • Second fraction: 2/3

the calculator returns:

  • Result: 17/12
  • Mixed number: 1 5/12
  • Decimal: 1.41(6)

Working

  1. Common denominator: 4 × 3 = 12
  2. 9/12 + 8/12 = 17/12
  3. Simplify: 17/12

Frequently asked questions

How do you add fractions with different denominators?

Rewrite both fractions over a common denominator, add the numerators and simplify. 3/4 + 2/3 = 9/12 + 8/12 = 17/12 = 1 5/12.

How do you divide fractions?

Multiply the first fraction by the reciprocal of the second: a/b ÷ c/d = a/b × d/c.

Can I enter mixed numbers?

Yes — type the whole number, a space and the fraction, e.g. 2 3/8.