Shuffle: presentation order for 24 students
Paste the class roster and press Shuffle list. Read the order top to bottom. Leave numbering on 1. 2. 3. when the result goes into a slide or a group chat, so nobody argues about whose turn comes next.
Paste names, tasks or songs, one per line. Shuffle the full list, draw a set number of winners, or deal everyone into even teams. Every order has equal odds, and your list stays in this tab.
Press Ctrl + Enter inside the box to randomize again.
Paste a list on the left, then press Shuffle list.
A list of n items has n factorial possible orders: n × (n − 1) × (n − 2), all the way down to 1. The count climbs fast. By 52 items, the number of orders passes the number of atoms on Earth, roughly 1050.
| Items | Possible orders | Where you meet a list this size |
|---|---|---|
| 3 | 6 | Speaking order for three people on a call |
| 5 | 120 | Answer options on a single quiz question |
| 10 | 3,628,800 | Presentation slots for a seminar group |
| 20 | 2.43 x 1018 | A 20-track playlist |
| 30 | 2.65 x 1032 | A classroom seating chart |
| 52 | 8.07 x 1067 | A standard deck of cards |
| 100 | 9.33 x 10157 | A 100-entry giveaway list |
Your own list: the Possible orders box above runs this math on whatever you paste. Duplicate lines get divided out. Two lines reading Pizza look identical whichever way round they land, so a 10-line list holding two of them shows 1,814,400 orders, half of 3,628,800.
Each mode starts from your original list on every press, never from the previous result.
Paste the class roster and press Shuffle list. Read the order top to bottom. Leave numbering on 1. 2. 3. when the result goes into a slide or a group chat, so nobody argues about whose turn comes next.
Paste every username and set Winners to draw to 3. Each entry holds a 0.75% chance. Turn on Remove duplicates for one entry per person, even if someone commented five times. Leave it off when each comment counts as its own ticket.
The tool shuffles the names, then deals them out one at a time like cards around a table. You get teams of 6, 6, 6 and 5. Team sizes never differ by more than one person.
People expect a fair shuffle to move everything. Probability says otherwise. On average, exactly one item lands back where it started, whether your list holds 5 lines or 5,000.
Only about 37% of shuffles move every single item (the share settles at 1 divided by e). The other 63% leave at least one item in place. The Stayed in place box counts them, and each row on the right says either stayed or the position the item came from.
crypto.getRandomValues() supplies them, seeded by your operating system's entropy pool. Out-of-range draws get thrown away and redrawn, which removes the small bias a plain remainder introduces.The shortcut many scripts use, and the fix
// Biased: results depend on the browser's sort routine
list.sort(() => Math.random() - 0.5);
// Fisher-Yates: every order equally likely
for (let i = list.length - 1; i > 0; i--) {
const j = randomInt(i + 1);
[list[i], list[j]] = [list[j], list[i]];
}The sort trick shows some orders far more often than others, and the skew changes between Chrome, Firefox and Safari. Math.random() has its own ceiling: in Chrome it runs on a generator with 128 bits of state, while a 52-card deck has about 2226 orders. Most deck orders are out of its reach. This page uses neither.
Know these before you use the result for anything with stakes.
Ana and ana count as two different people unless Trim spaces and Ignore case are both on.Okafor, Amara turns into two items. Stick with New line for surname-first lists.RAND() column handles lists of this size better.Short answers about fairness, privacy, and formats.
The random numbers come from crypto.getRandomValues(), the same browser source used to generate encryption keys. The Fisher-Yates shuffle then gives every possible order equal odds. Nobody, including Toolexe, sees or steers the result.
No. The shuffle, the winner draw and the group split all run inside your browser tab. Nothing gets sent to a server, so lists of student names or customer emails stay on your device.
Switch to Pick winners, set Winners to draw to 1, and press Draw winners. Each line has a 1 in n chance, where n is the number of lines after clean-up.
Set Split items on to Comma and Output as to Comma separated. A line such as red, green, blue, amber comes back as amber, red, blue, green, ready to paste back where it came from.
Tick First line is a header. In Shuffle mode the header stays on line 1 while the rows below it get shuffled. In Pick winners and Make groups the header is left out of the draw.
Each press shuffles your original list from scratch. Reshuffling the previous result would give the same odds, but starting fresh means an order you saw a moment ago has no influence on the next one.