Class lists
Most classes have fewer than 30 students. Use each student's number to pick who answers or presents.
Make it yours
1-20 Number Generator
Press spin and get a number from 1 to 20. Each number has the same 5% chance. This 1-20 number generator uses your browser's secure random tool, so the pick is fair and cannot be steered.
Twenty is a very useful range. It fits a class list, a d20 die, a list of chores or the questions in a quiz.
How to Use the Random Number 1-20 Wheel
- Number your options from 1 to 20, or use the numbers as they are.
- Press spin.
- Read the number. That is your pick.
What 1 to 20 Is Good For
A d20 roll
The twenty sided die is the main die in many tabletop games. This is a quick stand-in. For a full dice set, use the DnD dice roller.
Quiz questions
Pick which of twenty questions to ask next.
Chores and tasks
Number twenty jobs and spin to pick one.
Date games
Pick a day of the month for a trip or a challenge.
Guessing games
A secret number from 1 to 20 can be found in five yes or no questions.
Number Randomizer 1 20: The Odds
| Question | Answer |
|---|---|
| One number on a single pick | 5% |
| The same number twice in a row | 5% |
| A given number at least once in 20 picks | about 64% |
| Picks until a repeat is more likely than not | 6 |
Only six picks! With a range of twenty, a repeat is more likely than not after six picks. This is the birthday paradox, and it surprises most people. If you want each student once, turn on elimination mode. If not, you will hear the same number again fast.
Pick a Number 1 20 for Fairness in Class
Students see a fair draw as fair, and a wheel makes the draw visible. Add the class numbers, spin, and ask the student with that number. Anyone can be next, so everyone stays ready.
To use names instead of numbers, try draw names. For smaller groups, use 1 to 10 or 1 to 5.
1-20 Random Numbers Without a Computer
You can do it with paper. Write 1 to 20 on slips and draw one. The wheel is faster, nobody can peek, and nothing gets lost. For other ranges, set your own on the random number wheel.
Frequently Asked Questions
Is the 1-20 number generator really random?
Yes. It uses your browser's secure random tool, with a 1 in 20 chance for each number.
Can I get 1 and 20?
Yes. Both ends are included.
Is this the same as rolling a d20?
In odds, yes. Each face of a fair twenty sided die has a 5% chance, the same as each number here.
How do I avoid repeats?
Turn on elimination mode. Each winner is removed from the wheel.
Is it free?
Yes. It is free, and you do not need an account.