Random Fraction Generator
Generate a random fraction, automatically simplified to lowest terms and displayed as a proper stacked fraction — ideal for maths practice and worksheets.
Generate
How the Random Fraction Generator works
Each fraction starts as a random denominator between 2 and your chosen maximum, paired with a random numerator smaller than that denominator, then both are divided by their greatest common divisor so the result is always shown in simplest form — you'll never see an unsimplified fraction like 4/8 when it should read 1/2.
The visual stacked display (numerator over a dividing line over denominator) mirrors how fractions are written on paper, making this a natural fit for generating quick maths practice problems or classroom worksheets.
How to use it
Frequently asked questions
Will I ever see an improper fraction greater than 1?
No, the numerator is always drawn smaller than the denominator, so every result is a proper fraction between 0 and 1.
Why does the denominator sometimes look smaller than my maximum?
After simplifying to lowest terms, the displayed denominator can be smaller than the randomly drawn one — for example 6/12 simplifies to 1/2.
Can I generate improper or mixed fractions?
Not currently — this tool focuses on simple proper fractions for practice; combine two draws manually if you need a mixed number.