Percent to Fraction Calculator

Percentages and fractions are two ways of writing the same thing, and being able to move between them quickly is one of the most useful everyday maths skills. This calculator converts both ways. Type in a percentage and it returns the fully simplified fraction, reduced to its lowest terms, along with the decimal value so you can see all three forms at once. Enter a fraction instead and it gives you the matching percentage. It handles the tricky cases that trip people up, such as decimal percentages like 12.5% or 33.33%, by clearing the decimal before reducing, so you always get a clean, correct fraction rather than an ugly one. That makes it handy for a huge range of tasks: a student checking homework or learning to convert between forms, a shopper turning a discount into a fraction to compare deals, a cook scaling a recipe, a tradesperson reading a plan, or anyone who simply finds a fraction easier to picture than a percentage. Because the tool reduces using the greatest common divisor, the answer is always in simplest form, the way a teacher or exam marker expects to see it, and it shows the working idea below so you can do it by hand next time. Conversions update the instant you type, so you can experiment freely and build a feel for the common equivalents, like a half being 50%, a quarter being 25% and three quarters being 75%. Whether you need a one-off conversion or want to understand the method, this gives you a fast, accurate and clearly explained answer every time.

Percent to fraction

%
0
as a fraction

Fraction to percent

0%
as a percentage

How it works

To turn a percent into a fraction, the calculator writes it over 100, multiplies top and bottom by a power of ten to remove any decimal, then divides both by their greatest common divisor to reduce it. To turn a fraction into a percent, it divides the numerator by the denominator and multiplies by 100.

Worked example

For 12.5%, start with 12.5 over 100. Multiply by 10 to clear the decimal: 125 over 1000. The greatest common divisor is 125, so it reduces to 1 over 8. Going the other way, 3 over 8 is 0.375, and times 100 is 37.5%.

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