How do I generate UUIDs?

Select how many UUIDs you want (1, 5, 10, or 25) using the count toggle. UUIDs are generated instantly. Click 'Copy' next to any UUID to copy it individually, or 'Copy All' to copy the entire list.

A UUID (Universally Unique Identifier) is a 128-bit label used to uniquely identify information in computer systems. Version 4 UUIDs are randomly generated and have an extremely low probability of collision, making them ideal for database primary keys, session IDs, and API identifiers.

Is the UUID generator free?

Yes, completely free. UUIDs are generated using the browser's built-in crypto.randomUUID() function — no data is sent to any server, and no signup is required.

UUID Generator

Generate random UUID v4 values instantly online. Generate 1 to 25 UUIDs at once with per-UUID copy buttons. Uses the browser's built-in crypto.randomUUID() — no server required.

01a85fc642-2607-4280-8d7d-842cdaa626f3

02edb9d3e6-0477-4b54-b314-e64cc342c6d8

038484e463-5031-411d-8515-36eb3297d0dd

045fc47ad8-3efe-49d8-b324-ca4c66caa3b3

05a8fd5e82-697d-497e-90f9-b5c0d4b4d688

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How to Use the UUID Generator

Select how many UUIDs to generate using the 1 / 5 / 10 / 25 toggle.
UUIDs are generated instantly and displayed in the list below.
Click Copy next to any UUID to copy it individually.
Click Copy All to copy all generated UUIDs as a newline-separated list.
Click Regenerate to get a fresh set of UUIDs.

About UUID v4

128-bit randomly generated identifier
Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
Generated using the browser's crypto.randomUUID()
Collision probability is astronomically low (~1 in 5.3×10³⁶)