UUID Generator
Generate random UUIDs and GUIDs in different formats and versions. Perfect for developers and testing.
Version 1
Time-based UUID using timestamp and MAC address
Version 4
Random UUID - most commonly used version
Version 5
Name-based UUID using SHA-1 hash
Standard
Standard UUID format with dashes (e.g., 123e4567-e89b-12d3-a456-426614174000)
No Dashes
UUID without dashes (e.g., 123e4567e89b12d3 a456426614174000)
Uppercase
UUID in uppercase with dashes (e.g., 123E4567-E89B-12D3-A456-426614174000)
Uppercase No Dashes
UUID in uppercase without dashes (e.g., 123E4567E89B12D3 A456426614174000)
With Braces
UUID with braces (e.g., {123e4567-e89b-12d3-a456-426614174000})
What is a UUID?
A Universally Unique Identifier (UUID) is a 128-bit label used for information in computer systems. When generated according to standard methods, UUIDs are unique with no practical chance of collision.
Common Uses
- Database primary keys
- Distributed systems
- Session identifiers
- Transaction IDs
- File names
UUID Versions
- Version 1: Time-based
- Version 4: Random
- Version 5: Name-based (SHA-1)
UUID (Universally Unique Identifier) and GUID (Globally Unique Identifier) are essentially the same thing. GUID is Microsoft's implementation of the UUID standard. Both are 128-bit values typically represented as 32 hexadecimal digits with hyphens.
The format is: xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx where M indicates the version and N indicates the variant.
While UUIDs are designed to be unique, they are not designed to be unguessable or secure for cryptographic purposes. For security-sensitive applications:
- Use Version 4 (random) UUIDs
- Consider using a cryptographically secure random number generator
- Don't use UUIDs to store sensitive information
- For security tokens, consider purpose-built alternatives
UUID/GUID Generator: Unique IDs, Made Simple!
Generate random UUIDs or GUIDs in multiple formats and versions with a single click — perfect for developers and testing!
Yo, the UUID/GUID Generator is your quick fix for creating unique 128-bit codes! Pick a version (like random V4 or name-based V5), choose a format (with or without dashes), and boom — you get a shiny new UUID. It saves your history, lets you copy with one click, and is perfect for coding, testing, or just geeking out. No fuss, all function!
Why generate UUIDs online? 'Cause it's a fast, reliable way to get unique IDs without coding from scratch. Here's why it's awesome:
- Instant IDs. Get unique UUIDs in seconds for your projects.
- Multiple Versions. Choose V1 (time-based), V4 (random), or V5 (name-based).
- Flexible Formats. Pick standard, no-dashes, uppercase, or braced styles.
- Track History. Save and review your generated UUIDs.
- Free and Easy. No sign-ups, no ads — just pure UUID goodness.
It's a developer's best friend for quick, collision-free IDs.
The UUID/GUID Generator is packed with handy features. Here's what you can do:
- Generate UUIDs: Create unique IDs for databases, sessions, or files.
- Choose Versions: Pick V1, V4, or V5 for different use cases.
- Customize Formats: Get UUIDs with dashes, uppercase, or braces.
- Copy Easily: One-click copying for quick use in your code.
- View History: Check past UUIDs with version and format details.
It's your one-stop shop for unique IDs, any way you want 'em.
This tool's perfect for any moment you need a unique ID or just wanna nerd out. Here's when it shines:
- Database Keys: Create collision-free primary keys for your database.
- App Development: Generate session IDs or transaction tokens.
- Testing: Use UUIDs for mock data or file names in tests.
- Learning: Explore UUID versions for coding education.
- Quick IDs: Need a unique string for a one-off task? Done.
Whenever you need a unique ID fast, this generator's got your back.
Wanna make the UUID/GUID Generator even more fun? Try these ideas:
- UUID Hunt: Generate V4 UUIDs and look for cool patterns.
- Format Play: Try all formats to see which fits your project vibe.
- V5 Experiment: Input different names to see how V5 UUIDs change.
- Code Challenge: Use generated UUIDs in a fun coding project.
- Share the Nerdery: Post your favorite UUID and its use case with friends.
Get geeky with it — these IDs are your playground!
What's the difference between UUID and GUID?
They're basically the same — UUID is the standard, GUID is Microsoft's term. Both are unique 128-bit IDs.
Are UUIDs safe for security?
Nope, they're for uniqueness, not secrecy. Use secure tokens for sensitive stuff.
Can I generate unlimited UUIDs?
100%, keep clicking to generate as many as you need!
Does it work offline?
Yup, it's all client-side, so it works anywhere with a browser.
Is it free to use?
Totally free, no sign-ups, no ads. Just generate and go!
Alright, whether you're building a database, testing an app, or just geeking out over unique codes, the UUID/GUID Generator is here to deliver. Pick your version, tweak the format, and grab a collision-free ID in seconds. Share your coolest UUIDs with your dev crew and keep the unique vibes flowing!