Fraction Calculator
Add, subtract, multiply and divide fractions and see the simplified result, the mixed number and the decimal value. Everything runs in your browser; nothing is uploaded.
Add, subtract, multiply and divide fractions and see the simplified result, the mixed number and the decimal value. Everything runs in your browser; nothing is uploaded.
Formula
a/b + c/d = (a x d + b x c) / (b x d). The result is then reduced by dividing numerator and denominator by their greatest common divisor.
Example
1/2 + 1/3 = 5/6, which is 0.8333 as a decimal.
How to use it
- Enter the two fractions.
- Pick an operation: add, subtract, multiply or divide.
- Press Calculate.
- Read the simplified result, the mixed number and the decimal value.
Frequently asked questions
Why simplify a fraction?
A fraction is in simplest form when numerator and denominator share no common factor except 1. Simplified answers are the standard form for exams and everyday use.
Can a denominator be zero?
No. Division by zero is undefined, so the calculator refuses a zero denominator and asks for a valid fraction.
Do negative fractions work?
Yes. Enter a negative numerator and the result keeps the correct sign through every operation.