Math calculator

Fraction Calculator

Enter whole numbers, simple fractions or mixed numbers and choose one operation.

Calculated privately on your device
No account. Formula and assumptions are shown below.

Calculator inputs

Fractions details

Formula & disclaimer

Fractions use a common denominator for addition or subtraction, then the result is reduced by the greatest common divisor

View assumptions
Formula reviewCalcs at Hand Editorial TeamVerified 28 August 2026 Β· automated checks included

How to read this result

Three useful checks, kept deliberately short.

What this result includes

The result includes reduced fraction, mixed number and decimal forms.

A practical example

Add 1 1/2 and 3/4: Convert the mixed number to 3/2 Β· Use a common denominator Β· Reduce 9/4 and show it as 2 1/4.

Common input mistake

A denominator cannot be zero, and division by a zero fraction is blocked.

Formula and assumptions

Fractions use a common denominator for addition or subtraction, then the result is reduced by the greatest common divisor

Accepted formats include 3, 3/4 and 1 1/2.

Keep in mind: Use a period for decimals and a forward slash between numerator and denominator.

Produced byCalcs at Hand Editorial Team
Last formula check28 August 2026
Review methodKnown examples + boundary cases
Editorial and correction policy β†’