Fraction Calculator
Add, subtract, multiply, and divide fractions. Get simplified results, decimal values, and mixed number representations.
✓ Runs in your browser · Updated 2026-03-31Enter values and click Calculate to see results
How to Calculate with Fractions
This calculator performs the four basic operations on fractions and simplifies the result automatically.
Fraction Operation Formulas
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×d) / (b×c)
Simplifying Fractions
A fraction is simplified by dividing both the numerator and denominator by their Greatest Common Divisor (GCD). For example, 6/8 simplifies to 3/4 because GCD(6,8) = 2.
Mixed Numbers
When the numerator is greater than the denominator (improper fraction), the result can be expressed as a mixed number. For example, 7/3 = 2⅓.
Related Tools
Use our GCD & LCM Calculator to find common divisors and multiples, or the Proportion Calculator for solving proportions.
Frequently Asked Questions
How do I add fractions with different denominators?
Find the LCM of the denominators, convert each fraction to an equivalent fraction with that denominator, then add the numerators. For example: 1/3 + 1/4 = 4/12 + 3/12 = 7/12.