Decimal to Fraction

How this tool works

A finite decimal can be written as a fraction by placing its digits over a power of ten and then reducing the numerator and denominator by their greatest common divisor.

How to use it

1. Enter a finite decimal number, such as 0.75.
2. Select Convert.
3. Read the reduced numerator and denominator.

Example and practical tips

The decimal 0.75 is 75/100, which reduces to 3/4 after dividing both parts by 25.

This tool is intended for ordinary finite decimal inputs. Repeating decimals, scientific notation and values requiring exact arbitrary-precision arithmetic may need a different method. The displayed fraction is based on the finite decimal string entered, not an inferred repeating pattern.

Frequently asked questions

Can a decimal be greater than one?

Yes. A finite decimal such as 2.5 can be represented as an improper fraction.

Does it detect repeating decimals?

No. Enter a finite decimal; repeating-decimal notation is not detected.