Simplifying Fractions Calculator
Reduce any fraction to its lowest terms, with the greatest common factor shown, plus the decimal, percentage and mixed-number equivalents.
How to use it
- Type the numerator and denominator of each fraction.
- The answer is simplified automatically and shown as a decimal, a percentage and a mixed number.
- The working underneath is the same method you would use on paper.
Examples
| 48/18 | 8/3 |
| 36/48 | 3/4 |
Simplifying a fraction reduces it to the smallest equivalent numerator and denominator by dividing both by their greatest common factor — 48/18 and 8/3 represent exactly the same value, but 8/3 is the form worth reading, comparing or reporting.
Worked example
36/48: the GCF of 36 and 48 is 12, so 36 ÷ 12 = 3 and 48 ÷ 12 = 4, giving 3/4. Dividing by the full GCF in one step avoids the slower route of repeatedly halving both numbers, which can stop early at a partially-simplified fraction like 9/12 if you're not careful to keep going.
Questions people ask
How do I know a fraction is fully simplified?
When the greatest common factor of the numerator and denominator is 1 — there is no whole number left that divides both.
Is anything sent to a server?
No. Every calculation runs in your browser, so nothing you type is uploaded and the page keeps working offline once it has loaded.
Last updated 22 August 2026