How do you multiply fractions?

Multiply the numerators together to get the new numerator. Multiply the denominators together to get the new denominator. Then simplify the result by dividing both parts by their GCD. Example: 2/3 × 3/4 = 6/12 = 1/2.

Can I cross-simplify before multiplying?

Yes. Cross-simplification (or cross-cancellation) means simplifying diagonally before multiplying. For 2/3 × 3/4, you can simplify the 3s to 1, giving 2/1 × 1/4 = 2/4 = 1/2. This tool shows the final simplified result.

How do I multiply a fraction by a whole number?

A whole number n can be written as n/1. So multiplying 2/3 by 4 is the same as 2/3 × 4/1 = 8/3. In the calculator, enter 4 as the numerator and 1 as the denominator for the second fraction.

Can I multiply more than two fractions?

The calculator takes two fractions at a time. Multiply the first pair, then enter that result as the first fraction and multiply by the next: 1/2 x 2/3 = 1/3, then 1/3 x 3/4 = 1/4.

Multiply fractions calculator

Multiply two fractions and get the simplified result instantly. Enter the numerator and denominator for each fraction and this calculator multiplies them and simplifies the result. Step-by-step working is shown so you can follow the method. All calculations run locally in your browser.

How it works

To multiply 2/3 by 3/4, the calculator multiplies the numerators (2 x 3 = 6) and the denominators (3 x 4 = 12), then divides both by their greatest common divisor, 6, to give 1/2. The unsimplified product appears in the working before the final step. All arithmetic runs in JavaScript in your browser.

Processing runs in your browser

All calculations happen locally in your browser tab. Our servers are not involved at any point.

Related operations

For converting a fraction into a percentage, try the percentage calculator. To switch between metric and imperial measures, use the unit converter. For translating numbers into Roman numerals, see the Roman numeral converter.

Frequently asked questions

How do you multiply fractions?: Multiply the numerators together to get the new numerator. Multiply the denominators together to get the new denominator. Then simplify the result by dividing both parts by their GCD. Example: 2/3 × 3/4 = 6/12 = 1/2.
Can I cross-simplify before multiplying?: Yes. Cross-simplification (or cross-cancellation) means simplifying diagonally before multiplying. For 2/3 × 3/4, you can simplify the 3s to 1, giving 2/1 × 1/4 = 2/4 = 1/2. This tool shows the final simplified result.
How do I multiply a fraction by a whole number?: A whole number n can be written as n/1. So multiplying 2/3 by 4 is the same as 2/3 × 4/1 = 8/3. In the calculator, enter 4 as the numerator and 1 as the denominator for the second fraction.
Can I multiply more than two fractions?: The calculator takes two fractions at a time. Multiply the first pair, then enter that result as the first fraction and multiply by the next: 1/2 x 2/3 = 1/3, then 1/3 x 3/4 = 1/4.

Last reviewed September 30, 2026

Other pages for this tool

Related tools

Background reading: Complete guide to math tools