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UUID Generator
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UUID Generator

Generate UUID v4 identifiers in bulk. Free UUID generator with hyphenated, plain hex, and CSV output formats.

Works Offline100% Free

Processed 100% locally in your browserPrivate & Safe

UUID Generator runs entirely on your device using Web API standards. No data is ever uploaded to UtilixVerse servers.

Your Input
➔
Browser
➔
Result
No Server UploadsNo Account RequiredWorks OfflineZero Data Logging
How to use UUID GeneratorShow
  1. 1Choose UPPERCASE or lowercase output, and whether to remove the hyphens.
  2. 2Pick a quantity and a delimiter (comma, newline, or CSV) for your use case.
  3. 3Generate — every ID uses crypto randomness (v4), so duplicates are effectively impossible.
  4. 4Copy the batch or download it as a file. Use CSV mode when importing into a spreadsheet.

UUID Generator

Version
Format
Separator
Output — 5 UUIDs · 184 chars
16758da0b-abda-4cce-983a-f75ceb83bc56
23861f654-cefc-41bf-a871-45ec419ccee4
3ea22adf0-04f1-4817-be28-9dc6943ec312
40051a2e3-8344-4fe1-ac04-305e43f84b65
561bd59b7-a393-44dc-a18d-8423dca9a16e

UUID v4 draws 122 bits from the browser’s crypto.getRandomValues, so collisions are astronomically unlikely. v7 embeds a 48-bit Unix millisecond timestamp — batch entries sort chronologically. v1 encodes the time in 100ns ticks since 1582 with a random clock sequence and node. Everything runs locally in your browser.

Validate a UUID

Free UUID Generator — Generate v4 UUIDs in Bulk

Welcome to the UtilixVerse UUID generator. Generate UUID v4 identifiers instantly — single or in bulk (up to 1,000 at once). Perfect for database primary keys, API request IDs, session tokens, and any situation requiring universally unique identifiers. Choose from multiple output formats and copy or download results.

How UUID v4 Works

A UUID v4 is a 128-bit random number displayed in the standard 8-4-4-4-12 hex format (e.g. 550e8400-e29b-41d4-a716-446655440000). The tool generates randomness using the browser's crypto.getRandomValues() API, providing 122 bits of entropy (6 bits are reserved for version and variant). This makes collisions astronomically unlikely — you would need to generate 2^61 UUIDs before having a 50% chance of a single duplicate.

Output Formats

Hyphenated — standard format550e8400-e29b-41d4-a716-446655440000
Plain hex — no dashes550e8400e29b41d4a716446655440000
Curly braces — for JS/C# objects{550e8400-...}
Quoted — for JSON strings"550e8400-..."
CSV — comma-separated for bulk importuuid1, uuid2, ...

Common Use Cases

  • → Database IDs — generate primary keys that are guaranteed unique across distributed systems
  • → API Request IDs — attach unique identifiers to requests for tracing and debugging
  • → Session Tokens — create unpredictable session identifiers for web applications
  • → File Names — generate collision-free names for uploaded files
  • → Test Data — bulk-generate unique identifiers for load testing and prototyping

UUID Versions Explained

This tool generates version 4 UUIDs (random). Other versions exist: v1 uses timestamps and MAC addresses (privacy risk), v3/v5 use namespace-based hashing (deterministic), and v7 uses timestamps for sortable IDs. Version 4 is the most widely used because it provides maximum randomness with no embedded information.

Tips for Best Results

  1. 1. For bulk generation, set the count and click Generate — all UUIDs are created in one batch.
  2. 2. Use CSV format for importing into spreadsheets or databases.
  3. 3. UUIDs are case-insensitive in most systems — both uppercase and lowercase hex are valid.
  4. 4. Click Copy to put any UUID on your clipboard, or Download to save the full list as a text file.

100% private — UUIDs are generated entirely in your browser with no data sent to any server.

Frequently Asked Questions About UUID Generator

What format are the UUIDs?

The tool generates UUID v4 identifiers — 128-bit random strings displayed in the standard 8-4-4-4-12 hyphenated format (e.g. 550e8400-e29b-41d4-a716-446655440000). They are universally unique for all practical purposes.

Can I generate UUIDs in bulk?

Yes — set the count from 1 to 1000 and copy or download all of them at once. Choose from hyphenated, plain hex, or curly-brace formats, and add quotes or commas for easy embedding in code.

How random are these UUIDs?

UUID v4 values are generated using the browser's cryptographically secure random number generator (crypto.getRandomValues), giving each UUID 122 bits of randomness — making collisions astronomically unlikely.

Is this tool private?

Yes — UUIDs are generated entirely in your browser with no data sent to any server.

How to Use the UUID Generator

Generate RFC 4122 UUIDs for database keys, distributed systems, or any place you need a collision-resistant identifier without a central counter. Generates many at once, with version 4 randomly-generated IDs by default.

Step-by-Step

  1. 1Choose how many UUIDs to generate (1–1000).
  2. 2Hit Generate — each UUID uses the browser's secure random source.
  3. 3Copy the list (line-separated) or a single value.
EXAMPLEOne v4 UUID
Before
generate →
After
6ba7b810-9dad-11d1-80b4-00c04fd430c8
Tip: UUID v4 gives 122 random bits — enough that generating billions per second for decades still keeps collision odds effectively zero.

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