Calculator Tools

Fraction Calculator

Perform arithmetic on fractions with full step-by-step working shown. Automatically finds the LCD, simplifies results, and converts to mixed numbers, perfect for students and anyone working with fractional values.

Step-by-step results shown No sign-up required Browser-only, no upload

Runs entirely in your browser — no data is sent to a server

Input Text Output Text Browser-only No upload by default

Features

  • Add, subtract, multiply, and divide fractions
  • Full step-by-step working displayed
  • Automatic simplification to lowest terms
  • Mixed number input and output (e.g. 1½)
  • LCD (Lowest Common Denominator) shown for addition/subtraction
  • Converts between improper fractions and mixed numbers
  • Whole number support
  • No account, browser-only

How to use it

  1. Enter the numerator and denominator for each fraction.
  2. Select the operation (+, −, ×, ÷).
  3. Click Calculate to see the result and full working.
  4. Toggle 'Mixed number' to display as 2 3/4 instead of 11/4.

Use cases

  • Homework help for fraction arithmetic
  • Recipe scaling with fractional measurements
  • Construction and carpentry calculations
  • Verifying manual fraction calculations

Limitations

  • Browser processing depends on available device memory for very large inputs.
  • Tool-specific limits based on file format or browser support are noted on each tool page.
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Questions & answers

Frequently asked

Does it support mixed numbers like 2 3/4?

Yes. Enter whole number, numerator, and denominator separately. The tool converts to improper fraction for calculation.

What does 'simplify' mean?

Simplification reduces a fraction to its lowest terms by dividing by the GCD. E.g. 6/8 simplifies to 3/4.

Does Fraction Calculator upload my content?

Your file or text is processed in your browser and is not uploaded.

Is Fraction Calculator free to use?

Yes. All OnlineTextLab tools are free with no account required.