All tools
Fraction Calculator
Simplify a fraction to its lowest terms, or convert a decimal into a fraction. Runs entirely in your browser.
Your inputs never leave your device.
Simplify a fraction to its lowest terms, or convert a decimal into a fraction. A handy aid for maths homework and quick checks.
How to use
- Choose 'simplify fraction' or 'decimal to fraction'.
- Enter the numerator and denominator, or the decimal.
- Calculate to see the simplified result.
Frequently asked questions
How do I simplify a fraction?
Divide the numerator and denominator by their greatest common divisor. For example, 4/8 simplifies to 1/2. The tool does this automatically.
Can it turn a decimal into a fraction?
Yes, enter a decimal like 0.75 and it returns the closest simple fraction (3/4).
Does it handle negative fractions?
Yes; the sign is normalised onto the numerator, so -1/2 and 1/-2 both simplify correctly.