UUID Generator
Create random UUID v4 identifiers for apps and databases.
UUID v4
Version 4 UUIDs use cryptographically strong random values from your browser.
In-depth explanation
Generate one or many random UUID v4 identifiers using the browser’s crypto APIs — useful for IDs, seeds, and test data. Everything runs locally in your browser — your inputs are not uploaded to produce the result.
Version 4 (random). Not time-based (v1) or name-based (v3/v5). Collision risk is vanishingly small for normal use. They are not cryptographic secrets.
UUIDs are generated locally in your browser. Tweak the inputs above to compare options, then copy or note the result you need.
Frequently asked questions
Related tools
Explore similar utilities you might find useful next.