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Generate UUID v4, time-ordered UUID v7, NIL, ULID and NanoID, cryptographically random, in bulk.
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Among ToolsMonk's developer tools, UUID Generator covers a single everyday need: generate uuid v4, time-ordered uuid v7, nil, ulid and nanoid, cryptographically random, in bulk. Open the page and start working, with no download or sign-up standing between you and the result.
Typical jobs it handles include creating unique primary keys and identifiers for database records, generating correlation ids for logging and tracing requests, and producing unique keys for objects, files, or test fixtures. The same page works on desktop, tablet, and mobile, so it is equally quick for a single urgent task and for work you repeat every week.
If you have been searching for uuid generator, uuid v4, and uuid v7, this page covers those jobs with a clean interface, instant output, and no paywall in the way.
| Price | Free, no signup, no paywall, no watermark |
|---|---|
| Works on | Any modern browser: desktop, tablet, and mobile |
| Processing | In your browser, files never leave your device |
| Account required | None |
| Category | Developer Tools |
Open the tool, a UUID is generated immediately
Click to generate a new one whenever you need a fresh value
Copy the UUID with one click
Paste it into your code, database, or config
Generates universally unique identifiers (UUIDs) instantly
Produces standard version-4 (random) UUIDs
One-click copy, with the option to generate fresh values on demand
Created with secure browser randomness for genuine uniqueness
Runs in your browser, nothing is sent to a server
Free, with no signup and no rate limit
Creating unique primary keys and identifiers for database records
Generating correlation IDs for logging and tracing requests
Producing unique keys for objects, files, or test fixtures
Seeding identifiers during development and API design
UUID Generator exists to make one job effortless: generate uuid v4, time-ordered uuid v7, nil, ulid and nanoid, cryptographically random, in bulk. Professionals, students, and one-time visitors all get the same instant, accurate results in the browser: no installation, no account, no waiting.
Privacy and portability drive the design: all processing runs locally in your browser, so your files and data never leave your device. It behaves identically in every modern browser, from a desktop workstation to a phone.
UUID Generator creates universally unique identifiers, 128-bit values written as 32 hexadecimal digits in five hyphen-separated groups. They're the standard way to label records and objects uniquely without needing a central authority to hand out IDs.
This tool produces version-4 (random) UUIDs, the most common general-purpose variant. Because they're generated from randomness rather than coordinated counters, they're ideal whenever data is created in multiple places at once, distributed systems, offline-first apps, microservices, where a shared auto-increment counter would be impractical or collision-prone.
Practical collisions are a non-issue: a v4 UUID carries 122 bits of randomness, so you would need to generate an astronomical number before a duplicate became likely. For real applications you can safely treat every generated value as unique.
Generation happens in your browser with secure randomness, so nothing is transmitted, and you can produce as many as you need for free. For large batches, the UUID Bulk Generator creates many at once, and the other ToolsMonk developer tools cover hashing, tokens, and encoding alongside it.
Use v4 UUIDs as database keys when records are created in parallel across services, they won't collide like auto-increment IDs can
Store UUIDs as a native UUID type where your database supports it, rather than as plain strings, for efficiency
Need hundreds at once? Use the UUID Bulk Generator instead of clicking repeatedly
Common questions about this tool, its workflow, and what to expect before you use it.
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Generate UUID v4, time-ordered UUID v7, NIL, ULID and NanoID, cryptographically random, in bulk.
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