# Fractions Calculator

> Fractions calculator: add, subtract, multiply, and divide fractions and mixed numbers with step-by-step simplified and decimal results. Free, no signup.

- **Canonical URL:** https://boringtoolskit.com/fractions-calculator/
- **Category:** Everyday Calculators
- **Evidence level:** authored-methodology
- **Reviewed:** August 2026
- **Last verified:** 2026-10-12
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

## How it works

Add: (a×d + c×b)/(b×d). Subtract: (a×d − c×b)/(b×d). Multiply: (a×c)/(b×d). Divide: (a×d)/(b×c). Then simplify by the GCD.

## Sources

- [Calculation methodology and verification standard](/methodology/)

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