Are the UUIDs standards-compliant?

Yes, it generates cryptographically secure, RFC 4122-compliant UUID v4s in bulk, instantly.

Are the UUIDs standards-compliant?

Yes, it generates cryptographically secure, RFC 4122-compliant UUID v4s in bulk, instantly.

UUID v4 Generator

Generate cryptographically-random RFC 4122 v4 UUIDs. 100% local — no server calls.

100% LOCALBatch 100Crypto secureRFC 4122No limits

Count

Number of UUIDs to generate (1–100)

FormatUppercase hex digits

OUTPUT

Click "Generate UUIDs" to produce 5 random v4 UUIDs.

Each UUID uses 122 bits of cryptographic randomness — collision probability ≈ 1 in 2.7×10³⁶.

Next Steps

Generate a hash

Need a deterministic ID? Generate hashes from your data

Hash generator →

Data Source & Legal Disclaimer

Effective: Current

Sources: RFC 4122 — UUID URN Namespace

UUIDs are generated locally using the browser's cryptographic random number generator (crypto.getRandomValues). No data is uploaded — everything runs in your browser. Generated UUIDs are collision-resistant for practical use but should not be treated as cryptographically authenticated identifiers.

Joke of the Day

Jul 28

What do you call a shoe made from a banana peel?

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