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Random Number Generator

Utility

Generate random integers or decimals within a custom range with optional unique values.

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Range & Options

Picking lottery numbers, selecting a random sample for a study, or assigning raffle ticket numbers all share the same underlying requirement, numbers pulled from a specific range without a repeat showing up, which is a meaningfully different need from generating a random string or a random ID, since the actual values and their numeric range matter here rather than an opaque alphanumeric token. This tool generates random integers or decimals within a custom range, with an option to enforce unique values across the whole set generated.

See more about the Random Number Generator

Useful for drawing lottery or raffle numbers from a defined range without any duplicates appearing, generating a random sample of unique numeric values for a statistics exercise, or producing a decimal within a specific range for a simulation or a randomized test case.

Key features

  • Clean interface
  • Fast processing
  • No signup required
  • Works offline

Quick answers for Random Number Generator

What happens if I ask for more unique numbers than fit in my range?
With "Unique numbers only" checked, requesting more values than the min-max range can hold shows the message "Cannot generate more unique numbers than range allows" instead of returning duplicates.
How many numbers can I generate in one batch?
Up to 1000 numbers per click, displayed as a single comma-separated line with a Copy button.
Can the same number repeat in the results?
Only if "Unique numbers only" is left unchecked, otherwise every number in that batch is guaranteed distinct.