UUID generator
Generate random version-4 UUIDs free in your browser. Bulk generate, uppercase, braces and no-hyphen options. 100% private, no upload, no sign-up.
100% private — files never leave your deviceHow to use
- Choose how many. Select the number of UUIDs to generate, from a single value up to a hundred.
- Set the format. Optionally switch to uppercase, wrap each UUID in braces, or remove the hyphens.
- Generate. Click Generate to create the identifiers instantly in your browser.
- Copy them. Copy all the UUIDs with one click and paste them wherever you need.
Features
- Standards-compliant v4. Generates RFC 4122 version-4 UUIDs using the browser's native crypto.randomUUID().
- Nothing leaves your device. Identifiers are created locally and are never uploaded or logged.
- Bulk output. Generate up to 100 UUIDs at once for seeding databases or tests.
- Formatting options. Uppercase, braces, and hyphen-free variants to match your codebase.
- One-click copy. Copy the whole list to your clipboard instantly.
When to use it
- Create unique primary keys or identifiers for a database.
- Seed test data with a batch of random IDs.
- Generate a correlation or request ID for logging.
- Produce identifiers for config files, tokens, or resources.
- Get a quick GUID while coding without leaving the browser.
Is it private?
UUIDs are generated locally in your browser and are never uploaded or logged.
Frequently asked questions
Is this UUID generator free?
Yes, it's completely free with no sign-up and no limits.
Which UUID version does it create?
It generates random version-4 UUIDs using the browser's native crypto.randomUUID() function.
Are the UUIDs generated privately?
Yes. They're created locally in your browser and are never uploaded, stored or logged.
Can I generate many at once?
Yes. You can generate from 1 up to 100 UUIDs in a single click and copy them together.
Can I change the format?
Yes. You can make them uppercase, wrap them in braces, or remove the hyphens.
Do I need to install anything?
No. It runs entirely in your web browser with nothing to install.
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