What can I use a 1-20 random number generator for?

Perfect for board games with d20 dice (like D&D), classroom activities, picking volunteers, workout routines, and any situation requiring a random number from 1-20.

Is this the same as rolling a d20 die?

Yes! Generating a random number 1-20 is exactly equivalent to rolling a 20-sided die. Our digital version is faster and always fair.

Can teachers use this in the classroom?

Absolutely! Use it for random student selection, math problems, assigning presentation order, or creating random groups.

What's the probability for each number?

Each number from 1 to 20 has exactly a 5% chance (1 in 20). Our CSPRNG ensures perfect statistical distribution.

Is this suitable for D&D and tabletop games?

Yes! When you don't have physical dice handy, or need to roll secretly as a game master, our 1-20 generator works perfectly.

Can I generate multiple numbers at once?

Use our advanced random number generator to roll multiple d20 dice at once, great for D&D advantage/disadvantage rolls.

Is this better than physical dice?

Our digital generator offers instant results, works anywhere, never gets lost, and provides guaranteed fairness without any bias.

Random Number Generator 1-20 - Pick a Number Between 1 and 20

About this tool

This tool uses a cryptographically secure pseudo-random number generator (CSPRNG) to ensure fairness and security.

Tip: press Space to generate again.

About Random Number Generator 1-20

Generate a random number between 1 and 20. Ideal for board games, classroom activities, and quick random selections. Fast, secure, and free.

How to Use Random Number Generator 1-20

1Click generate for a number 1-20
2Use for board games, D&D, or classroom activities
3Roll multiple times for repeated selections
4Copy results if needed for record-keeping

Features

Game-friendly range
Instant results
Secure random
D&D compatible
Teacher friendly

Frequently Asked Questions

What can I use a 1-20 random number generator for?: Perfect for board games with d20 dice (like D&D), classroom activities, picking volunteers, workout routines, and any situation requiring a random number from 1-20.
Is this the same as rolling a d20 die?: Yes! Generating a random number 1-20 is exactly equivalent to rolling a 20-sided die. Our digital version is faster and always fair.
Can teachers use this in the classroom?: Absolutely! Use it for random student selection, math problems, assigning presentation order, or creating random groups.
What's the probability for each number?: Each number from 1 to 20 has exactly a 5% chance (1 in 20). Our CSPRNG ensures perfect statistical distribution.
Is this suitable for D&D and tabletop games?: Yes! When you don't have physical dice handy, or need to roll secretly as a game master, our 1-20 generator works perfectly.
Can I generate multiple numbers at once?: Use our advanced random number generator to roll multiple d20 dice at once, great for D&D advantage/disadvantage rolls.
Is this better than physical dice?: Our digital generator offers instant results, works anywhere, never gets lost, and provides guaranteed fairness without any bias.

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Secure & Private

All generation happens locally in your browser using Web Crypto API (CSPRNG). Your data never leaves your device. No tracking, no storage, complete privacy.