UUID Generator
Generate UUIDs in bulk — v4 (random) or v7 (time-ordered). Optional uppercase and braces.
How to use UUID Generator
- Pick a version and count.
- Click Generate.
- Copy the list.
What is UUID Generator?
UUIDs are 128-bit identifiers that are practically unique without coordination. Version 4 is purely random — best for unguessable IDs. Version 7 embeds a timestamp at the start, so generated UUIDs sort chronologically (great for database primary keys).
FAQ
- Should I use v4 or v7?
- v7 for database primary keys (sortable, indexes well). v4 for session tokens or anywhere unpredictability matters.
- Are these cryptographically secure?
- Yes — we use the browser's Web Crypto API for randomness.
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