Fraction Calculator
Add, subtract, multiply and divide fractions and mixed numbers — simplified automatically.
How to use the Fraction Calculator
Enter fractions like 3/4, −2/5 or mixed numbers like 1 1/2.
Formula
a/b + c/d = (ad + bc) ÷ bd
Worked example
3/4 + 5/6 = 19/12 = 1 7/12.
Frequently asked questions
How do you simplify a fraction?
Divide the numerator and denominator by their greatest common divisor.
Results are estimates for educational and planning purposes. Always confirm important financial, health or legal decisions with a qualified professional. Last reviewed 2026-09-27.