Overview
What Is a Fraction Calculator?
This tool performs the four basic operations on fractions - addition, subtraction, multiplication, and division - and automatically simplifies the result to its lowest terms.
Add, subtract, multiply, and divide fractions - simplified automatically.
This tool performs the four basic operations on fractions - addition, subtraction, multiplication, and division - and automatically simplifies the result to its lowest terms.
Useful for homework, cooking measurements, construction, or any task requiring fraction arithmetic.
Input the numerator and denominator.
Select add, subtract, multiply, or divide.
Input the numerator and denominator.
The answer updates automatically, already reduced to lowest terms.
Find a common denominator first, then add the numerators. This calculator does this automatically.
It means the fraction is reduced to its lowest terms by dividing both numerator and denominator by their greatest common factor.
Yes, enter a negative sign before the numerator to represent a negative fraction.
Multiply by the reciprocal (flip the second fraction) - this calculator does this automatically when you select divide.
A fraction with a zero denominator is undefined - the calculator will show an error in this case.
Convert mixed numbers to improper fractions first (e.g., 1½ becomes 3/2), then enter them.
The calculator shows the final simplified answer - the unsimplified intermediate result follows standard fraction math.
Yes, scaling recipe fractions is a common use case.
This tool handles two fractions per calculation - chain multiple calculations for more complex expressions.
Yes, completely free with no sign-up required.