Random Fraction Range Generator
Generates a random fraction with the numerator and denominator each independently drawn from 1 to 20 — not automatically simplified.
What this generator does
Produces a fraction inside a range you set, for maths practice and for test cases that need an exact rational rather than a rounded decimal.
How to use this tool
- Press generate for a random fraction.
Worked examples
- Format
- 7/12
Common use cases
- Fraction-recognition practice
- Placeholder fraction data
- Quick maths worksheets
How this generator works
A numerator and a denominator are drawn within your bounds and the fraction is shown as drawn, with its decimal value and its lowest-terms form alongside. Showing all three at once is the point of the page: a learner who can see that 12/18, 2/3 and 0.667 are the same quantity has understood something a single form cannot teach.
Limitations and good to know
- The denominator is never zero, since a fraction with a zero denominator is not a number.
- Fractions are drawn as pairs, so the values are not uniformly spread along the number line — small denominators cluster the results around simple quantities.
- The decimal form is rounded for display. A third is not 0.333, and rounding it and multiplying back will not return to the fraction.
Related generators
- Random Fraction GeneratorA proper fraction, automatically simplified to its lowest terms, with its decimal equivalent shown.
- Farey Sequence GeneratorLists every fraction between 0 and 1 with a bounded denominator, in order, with the neighbour identity checked on every consecutive pair.
- Fraction Question GeneratorFraction questions built to order — a fraction of an amount, simplifying, adding with the same or different denominators, and multiplying.