Fraction Calculator

Add, subtract, multiply and divide fractions. Get simplified results and decimal equivalents instantly.

First Fraction

Second Fraction

You can use whole-number or decimal numerator and denominator values.

Fraction Formulas

Addition: a/b + c/d = (a × d + c × b) / (b × d) Subtraction: a/b − c/d = (a × d − c × b) / (b × d) Multiplication: a/b × c/d = (a × c) / (b × d) Division: a/b ÷ c/d = a/b × d/c

How to Use the Fraction Calculator

1

Choose an Operation

Select addition, subtraction, multiplication or division.

2

Enter Both Fractions

Enter a numerator and denominator for each fraction. Denominators cannot be zero.

3

Calculate

The result is automatically simplified and shown as a fraction and decimal.

Types of Fractions

Proper Fraction

The numerator is smaller than the denominator, such as 3/5.

Improper Fraction

The numerator is equal to or greater than the denominator, such as 7/4.

Mixed Number

A whole number combined with a proper fraction, such as 1 3/4.

Frequently Asked Questions

For fractions with different denominators, find a common denominator, convert both fractions, add the numerators, and simplify the result. For example, 1/2 + 1/3 = 5/6.
Find a common denominator when necessary, subtract the numerators, keep the denominator, and simplify the result.
Multiply the numerators together and the denominators together, then simplify the resulting fraction.
Keep the first fraction, change division to multiplication, and multiply by the reciprocal of the second fraction. Then simplify.
A mixed number combines a whole number and a proper fraction, such as 2 1/3. It can be converted to an improper fraction for calculations.

Related Math Calculators

Ratio Calculator

Simplify and solve ratios between quantities.

Proportion Calculator

Solve proportions and find missing values.

Percentage Calculator

Calculate percentages and related results.

Decimal Calculator

Perform calculations with decimal numbers.

Average Calculator

Calculate the average of a set of values.

Percentage Change Calculator

Calculate percentage change between values.