Random number generator creates sequences of digits in a specific range or from a list

Number range can be from minus to plus 999,999,999

Numbers can be separated by space, comma or new line

Numbers quantity

Options

Creates a downloadable image with the results

Pick 21 random numbers

The 21 random number generator creates exactly 21 numbers in a given range in one operation. Suitable for drawings with 21 winners, games and statistical samples.

21 numbers in one generation.

Cryptographic API ensures true randomness. All client-side computations -- data is not sent to the server.

Features

  • Exactly 21 numbers in one generation
  • Configurable number range
  • Exclude duplicates
  • Zero-knowledge: data never leaves your device
  • Cryptographic API -- true randomness
  • Instant copy of results

Get 21 random numbers in four steps

Intuitive interface lets you get results in seconds.

01

Select quantity

21 numbers mode is already selected. You will get exactly 21 random numbers.

02

Configure range

Set the minimum and maximum values. The tool will adjust to your range.

03

Start generation

Press the button. The cryptographic algorithm will create 21 random numbers.

04

Copy result

Numbers are displayed instantly. You can copy them one by one or all at once.

Where to use 21 random numbers

Random numbers are used for many tasks.

Drawings

Select 21 winners from the participant list. Fair random selection with cryptographic generation.

Games

Generate 21 random numbers for board games, RPGs and card games with numeric values.

Statistics

Random sample of 21 elements for statistical research and lab work.

Testing

21 random numbers for testing algorithms, populating databases and generating test data.

21 random number generator

Exact quantity -- fair randomness

Guaranteed quantity

Each generation produces exactly 21 numbers. No more, no less.

Zero-knowledge architecture

Client-side generation. Numbers are not sent to the server. Complete privacy.

Convenient copying

Each number is a clickable chip. Copy as a list in the desired output format.

No limits

Generate as many times as you want. The tool is completely free, no registration required.

About 21 random numbers

What does 21 numbers mean?

Each generation creates exactly 21 random numbers in a given range. Numbers can repeat if the no-duplicates option is not enabled.

Can I exclude duplicates?

Yes, the no-duplicates option guarantees unique 21 numbers within one generation.

What range can I set?

Any range from -999,999,999 to 999,999,999. The minimum and maximum values are configurable.

Can I sort the result?

Yes, sorting by ascending or descending order is available. Convenient for analysis and comparison of numbers.

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