Secure browser randomness
Draws use crypto.getRandomValues. Integer selection applies rejection sampling so ranges that do not divide evenly into 32-bit values remain unbiased.
All tools
Secure randomizer · Free
Random Number Generator
Generate fair random integers or decimals with precise range, quantity, exclusion, uniqueness, and sorting controls.
Draws stay in this browser
Generated results
Integers from 1 to 100
Ready for a secure draw
Choose the range, quantity, and rules, then generate.
WEB CRYPTO
Recent draws
This browser session
Generated draws will appear here.
How it works
A random draw with explicit rules.
Choose exactly what values are allowed, then keep a clear record of the output and summary statistics.
- 01
Choose the range
Enter minimum and maximum values, then choose integers or decimals and the number of results required.
- 02
Set the draw rules
For integers, allow or prevent repeats and exclude specific values. Optionally sort any multi-number result.
- 03
Generate and reuse
Review statistics and recent draws, copy the output, or download one value per line as a text file.
Better than a basic RNG
Secure, customizable, and inspectable.
Flexible output controls
Generate one to one hundred integers or decimals with custom precision, exclusions, unique-only selection, and optional sorting.
Useful result context
See smallest, largest, mean, and median values, keep short session history, and export results without uploading anything.
Random-number questions
Fairness, exclusions, repeats, and privacy.
Is this random number generator fair?+
Integer draws use cryptographically secure browser randomness with rejection sampling to avoid modulo bias. Every allowed integer in the selected range has the same probability on each draw.
Can I generate numbers without repeats?+
Yes. Enable Unique only for integer draws. The requested quantity cannot exceed the number of allowed integers remaining after exclusions.
Can I exclude particular numbers?+
Yes. Enter integer exclusions separated by commas, spaces, or semicolons. Exclusions outside the selected range are ignored.
Can it generate decimal numbers?+
Yes. Decimal mode supports zero through ten displayed decimal places. Unique-only and integer exclusions do not apply to decimal draws.
How many numbers can I generate?+
The interface generates up to one hundred values per draw, which keeps output readable and easy to copy or download.
Are results stored or uploaded?+
Nothing is uploaded. Recent draws exist only in the current page session and disappear when the page is closed or refreshed.
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