← All Tools

🆔 UUID Generator

Generate random UUID v4 identifiers with format controls for fixtures, tests, databases, and tracing.

UUID generation checks

Generates UUID v4 values with browser cryptographic randomness when available, reports unique count, and labels IDs as non-secret identifiers. Format/case transforms are cosmetic wrappers around the same v4 values.

Runs in your browser

UUID generation runs locally. Generated IDs are identifiers, not secrets.

What this tool does

UUID Generator creates random universally unique identifiers with format options for records, fixtures, tests, and distributed systems.

Why it is useful

It gives developers quick IDs for databases, logs, examples, and prototypes without relying on sequential counters.

How it works

The page generates UUID v4 values in the browser using cryptographic random data, then applies format and case transforms.

Best input

Choose count and format for your target system (SQL, JSON fixtures, URN headers, etc.).

Practical tip

Use generated UUIDs for identifiers, not as passwords or security tokens.

Privacy note

UUID generation happens locally in your browser.

Important limitation

UUIDs are identifiers. Do not treat them as secrets or authorization tokens.

Quick answers

Is this UUID v4?

Yes. Values use the standard random UUID v4 shape.

Can I generate other versions?

This page focuses on v4. ULID/NanoID tools cover sortable and compact alternatives.

API examples

Call the same deterministic core through Utilito’s compact API router. Send only data you intentionally submit to the server-side endpoint.

Try in API playground →Schema →
Generate UUIDs with curl
curl
curl -X POST https://utilito.dev/api/run \
  -H "Content-Type: application/json" \
  -d '{"tool_id":"uuid-generator","input":{"count":5}}'
Generate UUIDs from JavaScript
javascript
const res = await fetch('https://utilito.dev/api/run', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    tool_id: 'uuid-generator',
    input: { count: 5 }
  })
});
const data = await res.json();
console.log(data.result.output || data.result.report);
Generate UUIDs from Python
python
import requests
payload = {
    "tool_id": "uuid-generator",
    "input": {"count": 5},
}
result = requests.post("https://utilito.dev/api/run", json=payload).json()["result"]
print(result.get("output") or result.get("report"))

Common Use Cases

Seed database fixtures

Generate 50 lowercase UUIDs and copy them into seed SQL or JSON fixtures.

Create SQL-ready quoted IDs

Use SQL format to paste directly into INSERT statements.

Export a bulk ID list

Generate hundreds of IDs and download a TXT file for offline tooling.

Random ID & Token Toolkit workflow

Move between UUIDs, ULIDs, NanoIDs, passwords, hashes, random numbers, usernames, and placeholder names while keeping randomness, secret-handling, and collision caveats visible.

🆔ULID Generator🔡NanoID Generator🔑Password Generator🧮Hash Generator🎲Random Number / Sequence Generator👤Username Generator
View all in Code →