How it works
Divide the numerator and denominator by their greatest common divisor. For 24/36, the greatest common divisor is 12, so the fraction reduces to 2/3. The decimal display is rounded.
Simplified fraction = (numerator ÷ GCD) / (denominator ÷ GCD)
Worked example
Show example inputs and result
Numerator: 24 · Denominator: 36.
- Simplified fraction
- 2/3
- Decimal value
- 0.66666667
Questions and answers
Can I enter a negative fraction?
Yes. Put the minus sign in the numerator and use a positive denominator. A denominator of zero is undefined and is not accepted.
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Method reviewed: October 8, 2026 · Methods & accuracy