½MATH
Fraction Calculator
Add, subtract, multiply and divide two fractions and simplify the result.
Enter your values
Your inputs stay in this browser.ⓘ
Privacy-friendly: your inputs are processed locally in your browser.
Formula
Fractions are combined using a common denominator where needed, then the result is reduced by the greatest common divisor.
a/b + c/d = (ad + bc) / bd
Multiply: ac/bd
Multiply: ac/bd
How it works
1
Enter both fractions.
2
Choose add, subtract, multiply or divide.
3
Review the simplified fraction and decimal equivalent.
Important notes
Denominators cannot be zero. Division also requires the second fraction's numerator to be nonzero.
The calculator uses whole-number numerator and denominator inputs.