UUID Generator
Generate cryptographically random UUID v4, time-sortable UUID v7, or the NIL UUID in bulk, then copy or download the list — everything runs 100% in your browser.
How to generate a UUID
Pick a count and generate in four steps.
- 1
Choose how many
Pick a count to generate a single UUID or a large batch at once, depending on what your task needs.
- 2
Generate version 4 UUIDs
The tool uses the Web Crypto API to produce random UUID v4 values instantly, entirely in your browser.
- 3
Copy the results
Copy the full list to your clipboard with one click and paste it into your code, tests, or database records.
- 4
Keep real secrets in Envless
UUIDs make great non-secret identifiers, but the API keys and tokens they pair with should live end-to-end encrypted in Envless — never hard-coded or pasted into chat.
Why use the Envless UUID generator?
Cryptographically secure identifiers from a team that builds encrypted secret management for a living.
Cryptographically secure randomness
Each UUID is generated with the Web Crypto API — crypto.randomUUID() and crypto.getRandomValues() — so the random bits come from your platform’s CSPRNG, not Math.random().
Bulk generation
Choose how many UUIDs you need and generate the whole batch at once. Create a single identifier or hundreds in one click, ready for seeds, fixtures, or migrations.
One-click copy
Copy every generated UUID to your clipboard instantly. No manual selecting line by line — grab the entire list and paste it straight into your code or database.
100% client-side
Nothing is ever sent to a server. UUIDs are generated entirely on your device — no uploads, no logging, and no network requests of any kind.
UUID v7, v4, and NIL
Switch to time-sortable UUID v7 for database-friendly keys, generate classic random UUID v4, or output the all-zero NIL UUID — then download the whole list as a file.
UUID generator FAQ
Everything you need to know about generating UUID v4 identifiers.
Yes. It runs 100% in your browser. UUIDs are generated on your device with no uploads, no logging, and no network requests, so nothing you generate ever leaves your machine.
A UUID version 4 is a 128-bit identifier whose bits are randomly generated, except for a few reserved bits that mark the version and variant. This tool sources that randomness from the Web Crypto API’s CSPRNG, so the values are cryptographically secure rather than pseudo-random.
For practical purposes, yes. A random UUID v4 has 122 bits of randomness, giving roughly 5.3 x 10^36 possible values. You would need to generate billions of UUIDs before the probability of a single collision becomes meaningful, so they are safe to use as unique keys.
Yes. Set a count and the tool generates the entire batch in one click, then lets you copy them all together — handy for seeding databases, building test fixtures, or scripting migrations.
No. A UUID is an identifier, not a secret. It is fine to expose UUIDs in URLs, logs, and database rows, but they should not be used as API keys or passwords. For values that must stay secret, use the Envless secret generator sibling tool to create high-entropy keys instead.
Use Envless to store and share API keys, tokens, and other secrets end-to-end encrypted, so your team can manage, rotate, and audit access without exposing plaintext or pasting credentials into chat.
Yes. Alongside random UUID v4, you can generate UUID v7 — a time-sortable identifier that embeds a timestamp, making it ideal for database primary keys — as well as the special all-zero NIL UUID. You can also download the generated list as a file instead of only copying it.
More free tools
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Ship secrets, not chaos.
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