Random generators — numbers, dice, lorem ipsum and UUIDs

Random numbers in any range — plus dice, coins and list picks

The random number generator has four modes, and the first is the one most people come for: set a minimum and a maximum — 1 to 10 for a quick pick, 1 to 100 for a raffle — and tap Generate. You get one whole number inside your range, with every value equally likely.

The other three modes cover the rest of everyday chance. Dice rolls a six-sided die, Coin flips heads or tails to settle a decision, and List takes any entries you paste — names, prizes, restaurant options — and picks one at random. Results appear instantly, and because everything runs in your browser, nothing you type is sent anywhere.

How to run a fair online draw, step by step

Giveaway draws are the most common serious use of a random picker, and fairness here is mostly about process. Here is a draw nobody can argue with:

• Open the random generator and switch to List mode.
• Paste the participants, one name per line — a duplicate gives that person an extra chance, so clean the list first.
• Run the pick live: share your screen or record it, then tap Pick one.
• For second and third prizes, delete the winner from the list and pick again — which also guarantees no one wins twice.
• Expected result: one clearly displayed winner per tap, each entry with exactly the same chance. If your draw uses ticket numbers instead of names, use Number mode with the min and max set to your ticket range.

Is it truly random? Pseudo-random vs crypto-grade

No ordinary computer produces true randomness by itself — it produces one of two engineered substitutes. Pseudo-random generators stretch a starting value into a long, statistically uniform sequence: extremely fast, and for draws, dice and games the results are as fair as anyone needs. That is what powers the picks above.

Cryptographically secure generators go further: they draw on unpredictable entropy collected by your operating system, so the output is not just evenly spread but infeasible to predict. That grade matters the moment randomness protects something. Carbide's UUID generator and password generator both use the browser's crypto.getRandomValues for exactly that reason — an identifier or a password must stay unguessable. If you are generating a password, the password generator guide covers length and entropy in detail.

Lorem ipsum by paragraphs, sentences or words — and what it means

Lorem ipsum is scrambled pseudo-Latin, loosely derived from a passage Cicero wrote in 45 BC and used as printer's filler since the 1500s. Designers still reach for it for one reason: it looks like real text but nobody stops to read it, so feedback stays on the layout instead of the words.

The lorem ipsum generator produces it in the shape you need: choose paragraphs, sentences or words, set the count — up to 50 in one go — and copy the result in one click. You can start with the classic "Lorem ipsum dolor sit amet…" opener or generate fully shuffled text. When a design has a strict length budget, paste the output into the character counter to check words and characters — the character counter guide shows every stat it tracks.

UUID v4 in bulk — uniqueness, collisions and GUID vs UUID

A version-4 UUID is a 128-bit identifier with 122 bits chosen at random, written as 36 characters like 550e8400-e29b-41d4-a716-446655440000. That allows roughly 5.3 undecillion possible values, which is why v4 UUIDs serve as database keys, request IDs and file names with no central authority handing numbers out. GUID is simply Microsoft's name for the same format — the two terms are interchangeable.

The UUID generator mints them with the browser's cryptographically secure random source, one at a time or up to 20 per batch, with an uppercase toggle and a one-tap copy of the whole list. The expected result: every ID is valid v4 — the third group always starts with a 4 — and generated on your device, so identifiers destined for your systems never touch a server.

Which generator for which job

The three tools deliberately do not overlap — pick by what the output is for:

• A fair pick, roll, flip or draw → random number generator.
• Filler text for a mockup, template or CMS test → lorem ipsum generator.
• Unique identifiers for databases, APIs or test data → UUID generator.
• A secret that must resist guessing → password generator, with the basics in the strong password guide.
• Results worth keeping — winners, IDs, snippets → paste them into the online notepad, which saves automatically in your browser.

Frequently asked questions