Fraction Calculator

Free fraction calculator to add fractions. Instant results in your browser — no signup.

JavaScript is required for live calculation.

You can still read how Fraction Calculator works, the formula, examples, and FAQs below.

Operation
Numerator 1
Denominator 1
Numerator 2
Denominator 2

Direct calculator

Enter values and calculate an instant answer.

Inputs

Enter the values, then calculate.

Operation

Numerator 1

Denominator 1

Numerator 2

Denominator 2

Results update when you click Calculate.

Result

Primary answer and useful breakdowns.

Simplified fraction

5/6

1/2 + 1/3 = 5/6

Decimal0.833333
Expression1/2 + 1/3

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Recently used

Tools you open will show up here on this device — with your last inputs when available.

What this result means

Free fraction calculator to add fractions. Instant results in your browser — no signup. Compute with cross-multiplication, then divide numerator and denominator by GCD.

Assumptions

Rule dependency: Universal formula.

How is it calculated?

Compute with cross-multiplication, then divide numerator and denominator by GCD.

Example

1/2 + 1/3 = 5/6.

Frequently asked questions

Mixed numbers?+

Convert to improper fractions first, or read the mixed form in the result hint.