Online Tool Store
Fraction Simplifier
Enter any fraction and instantly reduce it to its lowest terms using the greatest common divisor. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Simplified
How it works
- Enter a numerator and denominator.
- The fraction is reduced to its lowest terms instantly.
The formula
Both numerator and denominator are divided by their greatest common divisor (GCD):
Simplified fraction = (numerator ÷ GCD) / (denominator ÷ GCD)
Example: 48/180 — GCD(48, 180) = 12, so it simplifies to 4/15.
FAQ
How is this different from Fraction Calculator?
Fraction Calculator adds, subtracts, multiplies, and divides two fractions. This tool does one specific thing — reduce a single fraction to its lowest terms — with nothing else to configure.
Can I use negative numbers?
Yes — the sign is normalized onto the numerator in the simplified result.
What if my fraction is already simplified?
It says so directly — "Already in simplest form" — rather than showing a redundant "divided by 1" explanation.
Is my data uploaded anywhere?
No — the calculation happens locally in your browser.
How we compare
| Feature | Online Tool Store | Manual factoring | Full fraction calculator |
|---|---|---|---|
| Instant, no factoring by hand | ✓ | ✗ | ✓ |
| One field, no extra operations to configure | ✓ | ✓ | ✗ |
If you just need to reduce one fraction, Fraction Simplifier skips the extra operation dropdowns a full calculator needs.