Percent to Decimal Converter
Enter a number, pick a direction and see the decimal, percent and fraction.
This result is an estimate only. Double-check important figures before relying on them.
How it is calculated
- Percent to decimal: value ÷ 100
- Decimal to percent: value × 100
- Fraction: the decimal over a power of 10, divided by the largest common factor
For fractions with other numbers, use the decimal to fraction calculator.
Worked example
- 45% ÷ 100 = 0.45, which is 9/20
- 0.075 × 100 = 7.5%, which is 3/40
Why your number may differ
The fraction uses up to 8 decimal places. Repeating decimals such as 0.333… are not turned into thirds.
Frequently asked questions
How do I convert a percent to a decimal?
Divide by 100, which moves the decimal point two places to the left. 45% becomes 0.45.
How do I convert a decimal to a percent?
Multiply by 100, which moves the decimal point two places to the right. 0.075 becomes 7.5%.
How is the fraction found?
The decimal is written over a power of 10 and simplified. 0.45 is 45/100, which simplifies to 9/20.