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Math Calculators

Multiply Fractions Calculator

Verified formula Updated Jun 2026 Private — runs on your device

Enter details
Verified formula Private

Result (decimal)

0.375000

Result numerator
3
Result denominator
8

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the Multiply Fractions Calculator

The Multiply Fractions Calculator works out your result (decimal), along with 2 related figures in an instant. Enter fraction 1 numerator, fraction 1 denominator and fraction 2 numerator and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the fraction 1 numerator.
  2. Enter the fraction 1 denominator.
  3. Enter the fraction 2 numerator.
  4. Enter the fraction 2 denominator.
  5. Read off your result (decimal), together with result numerator and result denominator — the calculator updates automatically, with no button to press.

Formula

The Multiply Fractions Calculator uses the formula:

Result (decimal) = (Fraction 1 numerator × Fraction 2 numerator) ÷ (Fraction 1 denominator × Fraction 2 denominator)

Worked example

For example, with fraction 1 numerator of 1, fraction 1 denominator of 2, fraction 2 numerator of 3 and fraction 2 denominator of 4, the result (decimal) is 0.375000.

Inputs used
Fraction 1 numerator 1
Fraction 1 denominator 2
Fraction 2 numerator 3
Fraction 2 denominator 4
Results
Result (decimal) 0.375000
Result numerator 3
Result denominator 8

Results are estimates for educational use, not professional advice.

Frequently asked questions

Multiply the numerators and the denominators. 1/2 × 3/4 = 3/8, which is 0.375.

No. Unlike adding, multiplying fractions does not need a common denominator.

Divide the numerator and denominator by their greatest common factor. 3/8 is already in simplest form.

Write a whole number as itself over 1, such as 5 = 5/1, then multiply as usual.

The Multiply Fractions Calculator uses the formula: Result (decimal) = (Fraction 1 numerator × Fraction 2 numerator) ÷ (Fraction 1 denominator × Fraction 2 denominator). For example, with fraction 1 numerator of 1, fraction 1 denominator of 2, fraction 2 numerator of 3 and fraction 2 denominator of 4, the result (decimal) is 0.375000.

Enter the fraction 1 numerator. Enter the fraction 1 denominator. Enter the fraction 2 numerator. Enter the fraction 2 denominator. Read off your result (decimal), together with result numerator and result denominator — the calculator updates automatically, with no button to press.

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