random number 1 to 20

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Random number between 1 and 20

A class of twenty, a list of twenty questions, a d20 roll without the die: 1 to 20 is the range already loaded. Press Generate or the Space bar to pick a number. Each number from 1 to 20 has a 1 in 20 chance, or 5%, the same odds as a twenty-sided die.

Ideas for a number from 1 to 20

  • Calling on students. Give each student a number and pick who answers, presents or goes first.
  • Quizzes. Number 20 questions or flashcards and let chance choose the next one.
  • Games. Use it in place of a d20 when the dice are missing.
  • Small giveaways. Number up to 20 entries and pick one or more winners with No repeats.

When you pick several numbers at once with No repeats, each number’s chance of being chosen grows with every extra pick:

Numbers picked (No repeats)Chance a given number is among them
15%
210%
315%
525%
1050%

To pick from real names instead of numbers, use the random name picker.

How it works

  1. The range is set

    The lowest and highest numbers for this page are already in the sentence at the top, and both can come up. Nothing to type before your first pick.

  2. Pick your number

    Press Generate or the Space bar, or tap the number. The reel rolls like a slot machine and stops on the result.

  3. Change it if you need to

    Tap how many numbers you want in the sentence to get up to 20 at once; No repeats keeps them all different. Tap either end of the range to type a new one.

Any suggestions for improvement?

We build tools that are as simple and intuitive as possible, with a few bonuses here and there. Tell us what would make this one better.

Ready-made versions

Random numberNumber 1 to 10Number 1 to 100Number 1 to 6Number 1 to 50Number 1 to 1000Number 1 to 3Number 1 to 4Number 1 to 5Number 1 to 8Number 1 to 12Number 1 to 15Number 1 to 25Number 1 to 30Number 1 to 31Number 1 to 40Number 1 to 49Number 1 to 52Number 1 to 60Number 1 to 75Number 1 to 90Number 1 to 200Number 1 to 365Number 1 to 5001 to 10,000

Questions

What are the odds of getting a specific number from 1 to 20?

1 in 20, or 5%, on every pick. Both 1 and 20 can come up.

Can I use this instead of a d20?

Yes. The odds are the same as a fair twenty-sided die. If you would rather see a die, the dice roller has a d20.

How do I pick several students out of 20 without repeats?

Number your students from 1 to 20, tap “a number” to choose 2, 3, 5 or 10 numbers, and turn on No repeats.

How do I split 20 people into two teams?

Number everyone from 1 to 20, tap “a number”, choose 10 and turn on No repeats. Those ten numbers form one team and everyone else the other. For more teams, the team generator does it in one tap.

Is the random number generator free?

Yes. It is free to use, funded by advertising, with no account and no app to install.

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