MMaxTools

Fraction Calculator

Add, subtract, multiply and divide fractions — always simplified.

The Fraction Calculator performs addition, subtraction, multiplication and division on fractions and mixed numbers, always reducing the result to lowest terms and showing the decimal equivalent.

Fraction arithmetic is the algebra of everyday math — recipes, carpentry, sewing and finance all mix wholes and parts. The calculator accepts simple fractions (3/4), whole numbers and mixed numbers (1 1/2), computes with exact integer math, and simplifies using the greatest common divisor so the answer is always in cleanest form.

Results show the unsimplified computation path by default and the reduced answer prominently, plus the decimal so you can check your own work. Everything runs locally in your browser.

3/4 + 1/6 = NaN/NaN

Simplified: NaN NaN/NaN · decimal: NaN

Accepts simple fractions (3/4), whole numbers and mixed numbers (1 1/2). Results are always shown reduced to lowest terms.

How to use the Fraction Calculator

  1. Enter the first fraction — 3/4, 5, or mixed 1 1/2 all work.
  2. Choose the operation: + − × ÷.
  3. Enter the second fraction.
  4. Read the simplified result and its decimal form.
  5. Adjust inputs to check your own arithmetic.

Frequently asked questions

How do I add two fractions?

Find a common denominator: a/b + c/d = (ad + cb) ÷ (bd), then simplify. 3/4 + 1/6 = (18 + 4)/24 = 22/24 = 11/12. The calculator does the cross-multiplication and reduction for you.

What is a mixed number?

A whole number plus a fraction, like 1 1/2. It equals 3/2 as an improper fraction. The calculator accepts mixed input and can display results as mixed numbers.

How is simplification done?

Both numerator and denominator are divided by their greatest common divisor until they share no factor but 1 — so 22/24 becomes 11/12. Results are always reported in lowest terms.

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