Generate Rational Numbers
Create a list of rational numbers. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Generate Rational Numbers
- 1. Set the batch size. Enter How many numbers to control how many fractions the tool generates in this run.
- 2. Bound the numerator and denominator. Set Maximum numerator and Maximum denominator to control how large each part of the fraction can be, which shapes whether results look simple or unwieldy.
- 3. Read the reduced output. Each fraction is generated and then reduced to lowest terms, so you will see values like 3/4 rather than an unreduced form like 6/8.
- 4. Copy the fractions. Copy the generated fractions into a math worksheet, probability exercise or test fixture for a fraction-handling function.
When to use Generate Rational Numbers
Generate Rational Numbers produces random fractions in reduced p/q form, bounded by numerator and denominator limits you set. Use it whenever you need sample fractions for teaching, testing or quick arithmetic practice instead of inventing them by hand.
- Creating a fraction reduction worksheet. A middle school math worksheet on simplifying fractions needs a batch of random unreduced-looking fractions, generated with a higher denominator cap so students have real work to do reducing them.
- Testing a fraction arithmetic library. A JavaScript library that adds and multiplies fractions needs random p/q test inputs to confirm results always come back reduced to lowest terms.
- Practicing comparing fraction sizes. A tutoring session on ordering fractions from smallest to largest needs five or six random fractions generated on the spot for the student to sort as practice.
Examples
Five random reduced fractions
Output
3/4 7/9 1/2 11/15 5/6
About the Generate Rational Numbers tool
Generate Rational Numbers is a free online tool that works entirely inside your web browser. Create a list of rational numbers. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 194 Number utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with 4 settings, including How many numbers, Maximum numerator, Maximum denominator and Separator, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Does Generate Rational Numbers cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Does the generator send anything to a server?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How do I get a different result?
Run the generator again. Each run is computed fresh on your device, and any options you change are applied to the next result immediately.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.