Fraction Calculator
Add, subtract, multiply, or divide fractions. Get simplified results with decimal and percentage equivalents.
Enter two fractions to see the result.
How It Works
Addition/Subtraction: Find a common denominator, adjust numerators, then add/subtract. Formula: a/b ± c/d = (ad ± bc) / bd
Multiplication: Multiply numerators together and denominators together. Formula: a/b × c/d = ac / bd
Division: Multiply by the reciprocal of the second fraction. Formula: a/b ÷ c/d = a/b × d/c = ad / bc
Frequently Asked Questions
How do you simplify a fraction?
Divide both numerator and denominator by their greatest common divisor (GCD). For example, 6/8 simplifies to 3/4 because both 6 and 8 are divisible by 2.
What is a mixed number?
A mixed number combines a whole number and a proper fraction. For example, 7/4 as a mixed number is 1 3/4 (one and three-quarters).
Can I use negative fractions?
Yes! Enter negative numbers for either numerator or denominator. The calculator handles negative fractions correctly and normalizes the sign.