Fraction, Decimal & Percentage Converter
Convert fractions to decimals and percentages and vice versa. With simplification.
Enter the numerator and denominator — results appear automatically.
Results will appear here once you enter a fraction.
Fraction converter — decimals and percentages without mental arithmetic
Our free fraction converter lets you instantly convert a common fraction to a decimal and a percentage — or the other way around. Results appear live, no button to click. The calculator automatically reduces the fraction to its simplest form (by dividing the numerator and denominator by their greatest common divisor), and when the numerator is greater than the denominator it also shows the mixed-number form. Handy in maths lessons, cooking recipes, and anywhere you need to quickly compare fractions with percentages.
Three modes: fraction, decimal, and percent
The tool works in three modes, switchable with a single click. Fraction → decimal takes a numerator and denominator and returns the result as a decimal, a percentage, and a reduced fraction. Decimal → fraction converts any decimal (e.g. 0.333) to a fraction — the calculator approximates it via a power of ten and then reduces the result. Percent → fraction does the reverse: from a percentage value it computes the decimal and the common fraction.
Frequently asked questions
- How do I convert a common fraction to a decimal?
- Enter the numerator and denominator in the `Fraction -> decimal` tab. The result appears automatically as a decimal number, a percentage, and the fraction reduced to its simplest form (using GCD).
- How do I convert a decimal to a fraction?
- Go to the `Decimal -> fraction` tab and enter a number, e.g. 0.75. The calculator converts it to a common fraction and reduces it automatically — e.g. 3/4.
- What is a mixed number and when does it appear?
- A mixed number consists of a whole number and a proper fraction, e.g. 1 and 1/3. It appears when the numerator is greater than the denominator (improper fraction) — the calculator shows it as a supplementary result.
- Does the calculator support percentages?
- Yes. In the `Percent -> fraction` tab, enter a percentage value (e.g. 37.5) and the tool converts it to a decimal and a reduced common fraction.
See also
Unit Converters
Convert units of measurement, power, pressure and sizes — all in one wizard.
Numbers & Math
Scientific calculator, percentages, Roman numerals, number bases and fractions — all in one wizard.
Practical Measurements
Cooking measures, scale, land area, fuel consumption and running pace — all in one wizard.