UUID Generator
Generate UUIDs (v4 random and v7 time-ordered). Bulk generation, copy or download as a list.
Generate UUIDs, both v4 (random) and v7 (time-ordered, sortable). Bulk mode lets you produce up to 1000 at once with toggles for case and hyphenation. Use crypto.randomUUID under the hood for v4 and a built-in v7 implementation.
When to use it
- 1Seeding test data with unique IDs.
- 2Generating sortable v7 UUIDs for new database primary keys.
- 3Quickly producing a single UUID without opening a terminal.
How it works
- 1
Pick a version
v4 for fully random, v7 for time-ordered (newer rows sort after older ones).
- 2
Set count and format
Choose 1 to 1000. Toggle uppercase and hyphens to match your codebase conventions.
- 3
Copy or download
Copy all to clipboard or download as a .txt file. Each line is one UUID.
Frequently asked
Why use v7 over v4?
v7 UUIDs are time-ordered, so they sort lexically by creation time. This makes them better as database primary keys for index locality.
Are these cryptographically random?
Yes for v4. v7 uses random bytes for the entropy portion and the current Unix millisecond for the time portion.
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