Numbers 1 to 20 Wheel
Spin to land on a random number from 1 to 20. Handy for classroom draws, quick raffles, and picking a turn order.
Fair by design: each spin draws from your browser’s cryptographic random number generator, giving every entry an equal 1-in-20 chance. No server is involved.
One entry per line. 20 entries on the wheel.
The entries travel in the part of the link after the #, which browsers never send to a server. Nobody, including us, can read a shared wheel from a log.
Please keep the attribution link on the last line. It is the only thing we ask in return, and it is what pays for the wheel being free.
Numbers 1 to 20 Wheel at a glance
| Slices | 20 |
|---|---|
| Chance per slice, per spin | 1 in 20 (5.0%) |
| Chance of a given slice in 10 spins | 40.1% |
| Category | Number wheels |
| Randomness source | crypto.getRandomValues, tested |
| Last updated |
About the Numbers 1 to 20 Wheel
This wheel comes pre filled and ready to spin. Give it a whirl as is, or edit the entries in the box to make it your own. Every slice has equal odds, so the result is fair each and every time. When the wheel stops, the pointer at the top marks the winning slice.
Nothing you spin is uploaded anywhere. The Numbers 1 to 20 Wheel runs entirely in your browser, and you can save your edits to your own device. When you want your visitors to spin the same wheel, copy the embed code under the wheel and drop it onto your page.
A one to twenty range is one of the most common quick picks people need. Teachers use it to call on a student by seat number, coaches use it to set a drill order, and hosts use it to draw a small raffle. The wheel gives every number an equal one in twenty chance on each spin, so nobody can argue that the draw was rigged. If you need a smaller or larger range, edit the entries in the box and the wheel rebuilds instantly. You can also spin more than once to build a short shuffled list, which is handy for picking several winners in a row. Since the wheel runs entirely in your browser, you can use it offline once the page has loaded, and nothing about your draws is sent anywhere.
The odds on this wheel
There are 20 slices, all the same size, so a given slice wins one spin with probability 1 ÷ 20 = 5.0%. Every spin is independent of the one before it, which means no result is ever due: after ten spins without a particular slice, the chance on the eleventh is still 5.0%.
Across several spins the maths follows the complement rule. The chance of a given slice coming up at least oncein ten spins is 1 − (1 − 1/20)10 = 40.1%. Edit the entry list and every figure here recomputes, because they are derived from the wheel rather than written down beside it.
The classroom-sized number wheel
Twenty is the range that fits how classrooms actually run: seat numbers, register numbers, question numbers on a worksheet, teams of twenty at a sports practice. Give every student or item a number, spin on the board, and the pick is made in front of everyone with an equal 5% chance per number. Because the draw is visible, nobody suspects the teacher of picking favourites, which is the quiet reason random pickers work so well for calling on students.
For a no-repeat draw, such as working through all twenty questions in a random order, use remove after pick: each winning number leaves the wheel, the odds rebalance across what remains, and the wheel empties in exactly twenty spins with no number called twice. The classroom mode guide shows that setting together with saved lists per class and the big display mode.
Outside school hours the same range covers tabletop games. A spin here matches a d20 roll, one in twenty per face, so it stands in fine when the dice bag is missing. For a proper session the d20 roller is the better fit, with two-dice advantage rolls and running totals. And if twenty is the wrong size for your draw, the neighbouring 1 to 50 and 1 to 100 wheels scale the same fair mechanics up.
Frequently asked questions
What is a practical use for spinning a number between 1 and 20?
It is great for classroom name-number draws, raffle-style picks, or any game that calls for a value up to twenty. All twenty numbers share the wheel equally, so each has a 1 in 20 chance.
Can I use this to pick a random student or ticket number?
Yes, assign each person or ticket a number from 1 to 20 and spin to draw one at random. Every number carries the same weight, so the draw stays fair.
How do I narrow the range to something like 1 to 15?
Delete the numbers you do not need from the list below the wheel and it redraws with only the values you keep. This lets you set any smaller range without leaving the page.
Is there a 1 to 20 spinner without ads or signup?
This is one. The wheel runs entirely in your browser with no account, no ads and no cookie banner, and it keeps working offline once the page has loaded.
Can the 1 to 20 wheel replace a d20?
For a quick game, yes: both give every number from 1 to 20 an equal 5% chance. For tabletop RPG sessions the dedicated d20 roller is handier, since it can roll two dice for advantage and total multiple dice.
Put this wheel on your own site
One line of HTML. No tracking, no cookies, and it works on any page. The embed code sits under the wheel above, and the embed guide has a copy-paste block for WordPress, Google Sites, Notion, Moodle, Canvas and OBS.
More number wheels
Prefer to start from scratch? Build a custom spinner wheel, browse all 36 preset wheels by category, or see all SpinPicker tools.