SpinEverything

ESL Classroom Activity Toolkit

Random Number Generator

Generate random numbers within a custom range. Set your minimum and maximum values, choose how many numbers to generate, and get unbiased results.

Minimum: Maximum: Quantity: No duplicates

What is the maximum range I can set?

You can set very large ranges for the random number generator. It works with any reasonable minimum and maximum values.

Can I generate negative numbers?

Yes, you can set a negative minimum value to include negative numbers in your range.

Are the numbers truly random?

Yes, the generator uses your browser's built-in cryptographic random number generator for truly unbiased results.

Can I avoid duplicate numbers?

The generator produces independent random numbers. Each generation is a separate random event.

Set your rangeDefine the minimum and maximum values for your random number. The generator will pick numbers within this range.
Choose quantitySelect how many random numbers you want to generate at once — one number or several.
Generate numbersClick the generate button to produce random numbers within your specified range using an unbiased algorithm.
View resultsYour generated numbers are displayed on screen and saved in the history section for reference.

Set the range to match your class size (1 to 30) and use it to randomly call on students.
Generate numbers for lottery-style drawings, raffle picks, or classroom reward systems.
Use custom ranges for math exercises — generate numbers students must then add, multiply, or convert.
For statistics lessons, generate large sets of random numbers and have students analyze the distribution.

Classroom management — randomly selecting student numbers for participation or assignments.
Math lessons where students need random numbers for calculation exercises or probability experiments.
Raffles and giveaways that require a fair, transparent random selection from a numbered pool.