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Fraction, Decimal & Percent Converter

Type a decimal (0.75), a fraction (3/4) or a percent (75%) and see all three forms side by side. Repeating decimals like 0.333… are converted to clean fractions (1/3) using continued fractions — not ugly million-denominator approximations.

The three forms

They are the same value written three ways: divide a fraction's top by its bottom for the decimal, multiply the decimal by 100 for the percent. 3/4 = 0.75 = 75%.

Repeating decimals, done right

Typing 0.333333 gives 1/3, because the converter finds the simplest fraction within a tiny tolerance instead of reducing 333333/1000000. Type more digits for a closer match.

Percent-first conversions

If you usually start from percents (25% → 0.25), the Percent to Decimal Converter in the Converters category is the percent-first version of this idea.

Frequently Asked Questions

Why does 0.333333 become 1/3?

Continued fractions find the simplest fraction extremely close to your input — much cleaner than reducing 333333/1000000.

What is the difference from the Percent to Decimal Converter?

That tool starts from percents; this one is built for decimal-to-fraction work, including repeating decimals.

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