Decimal to Fraction Converter
This calculator helps you convert a decimal number into a fraction and a percentage value. Understanding the relationship between decimals, fractions, and percentages is a fundamental mathematical skill used in everything from cooking and crafts to finance and science. Simply enter your decimal number and the calculator shows the corresponding fraction and percentage.
How to convert a decimal to a fraction
To convert a decimal to a fraction, place the decimal number over a power of 10. For example, 0.75 is the same as 75/100, which simplifies to 3/4. The calculator shows the fraction over 100, and you can then simplify it manually. Common decimals like 0.5 = 1/2, 0.25 = 1/4, and 0.75 = 3/4 are good to know by heart.
From decimal to percentage
Converting from a decimal to a percentage is even simpler: just multiply the decimal by 100. So 0.75 becomes 75%, 0.5 becomes 50%, and 0.125 becomes 12.5%. This conversion is used daily — for example, to understand interest rates, discounts, and VAT.
When is this conversion used?
Converting between decimals and fractions is useful in many situations: following recipes in the kitchen, calculating materials for building projects, solving maths problems at school, and performing interest calculations in finance. In Denmark, a comma is used as the decimal separator (e.g. 0,75), while English-speaking countries use a period (0.75).