Decimal to Ratio Calculator
Convert a decimal to a ratio in lowest whole-number terms.
Change the values and press Calculate to work out your own figures.
Enter a decimal.
Show the working
- 0.8 = 4/5, so the ratio is numerator : denominator
How to use it
Enter a decimal.
Numbers can be whole numbers, decimals (0.75), fractions (3/4), mixed numbers (1 1/2), repeating decimals (0.(3)) and, where a percent is asked for, percentages (75%). Show the working gives each step.
Key facts
decimal = n/d → n : d
Via a fraction
Write the decimal as a fraction in lowest terms; the numerator and denominator are the ratio's terms.
Questions
What is 0.8 as a ratio?
4 : 5.
And 2.5?
5 : 2.
Formulas
decimal = n/d → n : d
Sources
Limitations
- Numbers have at most 120 digits.