🎱Random Number Generator — No Duplicates

Set a range and count to generate unique random numbers with no repeats

How to Use the No-Duplicate Random Number Generator

This tool picks a specified count of unique random numbers from a given range — no repeats guaranteed. It uses the Fisher-Yates shuffle algorithm to randomly reorder all numbers in the range, then selects the first N. Every number has an equal chance of being chosen, making the selection statistically fair.

Enter a start number, end number, and how many numbers you need. Use it for lottery picks, classroom draws, research sampling, or any situation where you need truly random, non-repeating numbers. The sort option lets you display results in random order, ascending, or descending — whichever works best for your use case. Up to 10,000 numbers can be generated at once.

Frequently Asked Questions

How is this different from a regular random number generator?

A standard random generator can produce duplicates. This tool uses sampling without replacement — once a number is picked, it cannot appear again in the same result set.

Can I use this for Powerball or Mega Millions picks?

Yes. For Powerball main numbers set start 1, end 69, count 5. For Mega Millions set start 1, end 70, count 5. The Powerball/Mega Ball should be generated separately since it has a different range.

What if I need more numbers than are in the range?

An error message will appear. It's mathematically impossible to pick more unique numbers than exist in the defined range.