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CALCULATOR · Math

Fraction Calculator

Add, subtract, multiply and divide fractions with exact reduced answers.

Show formula
a/b ⊕ c/d with exact integer arithmetic, reduced by GCD

Inputs

a/b · 0.5

c/d

Result

Your result appears here

Enter a/b ⊕ c/d and the result fills in as you type.

How it works

  1. Enter fractions like 3/4 or plain numbers.
  2. Choose add, subtract, multiply or divide.
  3. Read the exact reduced result and its decimal value.

Frequently asked questions

Is the answer rounded?

Never. Fractions use exact integer arithmetic and are reduced to lowest terms; only the optional decimal view rounds for display.

Are negative and improper fractions supported?

Yes — signs normalize to the numerator, and improper fractions reduce normally.

How do you add fractions with different denominators?

Rewrite both over a common denominator, add the numerators, then reduce. For 3/4 + 5/6 the least common denominator is 12, so 9/12 + 10/12 = 19/12.

How do you turn an improper fraction into a mixed number?

Divide the numerator by the denominator: the quotient is the whole part and the remainder stays over the same denominator. 19 ÷ 12 is 1 remainder 7, so 19/12 = 1 7/12.

Examples

3/4 + 5/6
19/12, or 1 7/12 as a mixed number (1.5833). Over the common denominator 12: 9/12 + 10/12 = 19/12.
2/3 ÷ 4/9
3/2 (1.5). Dividing by 4/9 is multiplying by its reciprocal: 2/3 × 9/4 = 18/12 = 3/2.
5/8 − 1/3
7/24 (0.2917). Over the common denominator 24: 15/24 − 8/24 = 7/24.

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