Calculators
Fraction Simplifier
Reduce a fraction to lowest terms and see its decimal value locally in your browser.
Enter a numerator and a non-zero denominator. The fraction is reduced to lowest terms with the greatest common divisor. Calculations run locally in your browser; your values are not uploaded or stored.
Reduce a fraction without uploading anything.
Enter a numerator and a non-zero denominator to see the fraction in lowest terms, its decimal value, and the greatest common divisor used. Everything runs locally in your browser, so your values are not uploaded or stored.
Frequently Asked Questions
Everything you need to know about this tool, how it works, and privacy.
What does the fraction simplifier show?
Enter a numerator and a non-zero denominator. The calculator divides both by their greatest common divisor and returns the fraction in lowest terms, its decimal value, and the divisor used. For example, 6/8 simplifies to 3/4 with decimal 0.75.
How are fractions reduced to lowest terms?
The calculator finds the greatest common divisor with the Euclidean algorithm, divides the numerator and denominator by it, and normalizes the sign so the denominator stays positive. A zero numerator simplifies to 0.
Which inputs are accepted?
Enter whole numbers for the numerator and denominator. The denominator cannot be zero, decimal values and values outside the safe integer range show a clear error instead of a result, and negative signs are normalized to the numerator.
Do my numbers stay private?
Yes. The calculation and copy action run locally in your browser. CodeASystem does not upload or store the values you enter.