Fraction to Decimal Converter

Convert any fraction to its decimal and percentage form by entering a numerator and denominator.

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Quick answer

Fraction is a free, private online tool that lets you convert a fraction to a decimal and percentage instantly. It runs entirely in your browser, so nothing you enter is uploaded to a server.

How to use the Fraction

Fill in each input field with your own numbers.
Results calculate automatically and update as you change any value.
Read the result cards below the inputs for the full breakdown.
Adjust any field to explore different scenarios instantly.

Privacy: this tool runs entirely in your browser. Your input is never sent to, received by, or stored on any server — there are no uploads and no tracking of what you enter.

About Fraction

Fractions, decimals and percentages

A fraction like 3/8 can be written as a decimal (0.375) or a percentage (37.5%). They are three ways of writing the same value.

How it works

Divide the numerator by the denominator to get the decimal; multiply by 100 for the percentage.

Where it helps

Schoolwork, cooking, measurements and converting odds or probabilities.

Frequently asked questions

How do I turn a fraction into a decimal?

Divide the top number by the bottom number.

What is 3/8 as a decimal?

0.375, or 37.5%.

Can it handle improper fractions?

Yes — any numerator and denominator work.

Understanding Fraction in depth

What this converter does

This tool turns a fraction into its decimal and percentage equivalents. A fraction like 3/8, the decimal 0.375 and the percentage 37.5% are three ways of writing exactly the same value; the converter moves between them so you can use whichever form a task requires.

How the conversion works

To convert a fraction to a decimal, you divide the top number (numerator) by the bottom number (denominator): 3 / 8 = 0.375. To get a percentage, multiply the decimal by 100: 0.375 x 100 = 37.5%. The tool does both at once from any numerator and denominator you enter, including improper fractions where the top exceeds the bottom.

Terminating versus repeating decimals

Some fractions give a clean, terminating decimal (1/4 = 0.25), while others repeat forever (1/3 = 0.333...). Whether a fraction terminates depends on its denominator's prime factors - only 2s and 5s give a terminating decimal. Recognising this helps you know when a decimal result is exact and when it has been rounded.

Why it is useful

Fractions, decimals and percentages each suit different contexts. Recipes and measurements use fractions (three-quarter cup, three-eighths inch); calculators and money use decimals; statistics, discounts and grades use percentages. Converting between them is constant in cooking, DIY, finance, schoolwork and probability, and doing it by hand is error-prone.

Everyday uses

Convert a measurement from fractional to decimal inches, turn odds or a test score into a percentage, simplify recipe maths, and check homework. Everything runs in your browser.