Fraction Simplifier
Enter a numerator and non-zero denominator to simplify a fraction locally in your browser.
A QUICK WALKTHROUGH
How to use this tool
- Enter integer numerator and denominator values.
- Choose Simplify fraction.
- Review the greatest common divisor and reduced fraction.
Exact integer arithmetic
The calculator parses bounded integer strings and uses BigInt plus the Euclidean algorithm, so large values remain exact.
Clear denominator rules
A zero denominator is rejected. Negative denominators are normalized so the final denominator is positive; zero is reduced to 0/1.
Local processing
Your values are parsed and simplified in this browser. Nothing is uploaded.
GOOD TO KNOW
Common questions
Can I use negative values?
Yes. Negative numerators and denominators are supported, and the sign is normalized to the numerator.
What happens with a zero denominator?
The fraction is invalid and the calculator asks you to enter a non-zero denominator.
How large can the values be?
Each integer is limited to 1,000 digits so the browser remains responsive while BigInt keeps the calculation exact.