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Random Number Between 1 and 20

One tap for a fair random number from 1 to 20, both ends included. Need several? Ask for a list, with or without repeats.

  • Free
  • No sign-in
  • Nothing leaves your device
  • Works offline
Numbers Dice Coin Picker Lottery Strings UUID
Press Generate for your random number
Type
Repeats

20 possible numbers, each with a 5% chance.

More options
Engine

Secure uses your device’s cryptographic random engine. Nothing can predict or repeat it.

Nothing you generate is sent anywhere. How we know

In 3 steps

How to use it

  1. It is already set

    The range 1 to 20 is filled in for you. Change it any time.

  2. Press Generate

    Ask for one number or many, with or without repeats.

  3. Copy the result

    Copy it in one tap, in the format you like. Nothing is stored.

Fast facts

Good to know

  • 20 possible numbers

    Every whole number from 1 to 20 is equally likely.

  • 5% each

    Any particular number has a 1 in 20 chance on every roll.

  • Repeats happen

    Pick 5 numbers with repeats allowed and there is a 42% chance that at least two match.

  • It is a d20 in disguise

    A random number from 1 to 20 is exactly what a twenty-sided die gives. For modifiers and advantage, use the Dice Roller.

Ideas

What people use this range for

  • rolling a d20 for tabletop games
  • assigning chores or seats
  • picking a student number
  • making a quick choice among 20 options

FAQ

Random Number Between 1 and 20: your questions answered

How do I get a random number between 1 and 20?

Press Generate. The tool is already set to 1 as the lowest number and 20 as the highest, and it returns one whole number from your device’s secure random generator. Each of the 20 possible numbers has exactly the same 5% chance.

Is 1 to 20 inclusive? Can I get 1 and 20 themselves?

Yes. Both ends are included, so 1 and 20 can each come up, with the same chance as every number in between.

Is a random number between 1 and 20 the same as rolling a d20?

Yes. A fair 20-sided die gives each number from 1 to 20 a 5% chance, exactly like this generator. The Dice Roller adds extras such as modifiers and advantage or disadvantage.

Can I get decimals or negative numbers instead?

Yes. Switch “Type” to Decimal to choose up to 20 decimal places, or change the limits to any range, including negative numbers such as -50 to 50.

Is the number really random, and do you keep it?

The number comes from your browser’s cryptographically secure random generator and is chosen with a method that gives every number exactly the same chance. It is created on your device, never sent to us and never stored.

Keep going

Private by design. No accounts, no cookies, no tracking. Everything you generate stays on your device.

How we keep it that way

Ready? Press the button.

Free, fast and private. No sign-in, ever.

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