Quick guide
How to use the Random Number Generator 1–100
- Enter or choose how many numbers?, repetition.
- Select Generate numbers.
- Review the main result, supporting details, and calculation method.
- Copy the result or download generated files when that option is available.
What this tool does
Draw one or more integers from 1 through 100 with optional duplicate prevention. The browser cryptography API supplies unbiased random indexes, making the tool more robust than a basic pseudo-random page script.
Calculation method
- Create the inclusive number pool from 1 through 100.
- Draw unbiased indexes with crypto.getRandomValues.
- Remove selected values from the pool when repeats are disabled.
Example: draw five numbers without repeats
Input: Count: 5; Repetition: No repeats
Result: A result such as 7, 26, 41, 68, 93
The values change on every run, but each result remains inside 1–100 and no number appears twice.
Practical uses
- Classroom picks
- Game prompts
- Sample selection
- Informal prize draws
Accuracy tips and common mistakes
- Enable repeats only when the same number may be drawn more than once.
- Copy the result before generating again.
- Use a regulated and independently audited system for legally controlled lotteries.