Fraction Calculator

Add, subtract, multiply, divide, simplify, and convert fractions instantly.

Enter Your Fractions

Use the format a/b for fractions or enter decimals.

How Fraction Operations Work

This calculator performs fraction arithmetic and simplifies the result automatically.

Supported Operations

  • Add: a/b + c/d = (ad + bc) / bd
  • Subtract: a/b − c/d = (ad − bc) / bd
  • Multiply: a/b × c/d = (ac) / (bd)
  • Divide: a/b ÷ c/d = (a × d) / (b × c)

Extra Features

  • Convert fractions ↔ decimals
  • Mixed number output
  • Auto-simplification
  • Handles negatives and improper fractions

Example

If you calculate 3/4 + 2/5:

  • Raw result = 23/20
  • Simplified = 23/20
  • Mixed number = 1 3/20
  • Decimal = 1.15

FAQ

Can I enter decimals?
Yes — decimals convert automatically to fractions.

Can I enter negative fractions?
Yes — negative numerators or denominators are supported.

Do I need spaces?
No — just use a/b or decimals.

Why Use a Fraction Calculator?

Fractions appear in schoolwork, recipes, engineering, construction, and everyday problem‑solving. This tool helps you compute them instantly with clean, accurate arithmetic.

What You Can Calculate

Who This Tool Is For

Additional FAQ

Does this work with repeating decimals?
Yes — they convert to fractions based on decimal length.

Is this a scientific calculator?
It focuses on fraction arithmetic, but works alongside other math tools.