UUID Generator
Generate random UUIDs (v4) and timestamp-ordered UUIDs (v7) in bulk
Your files never leave your browser. Nothing is uploaded to any server. Privacy Policy
Generate cryptographically random UUIDs (version 4) and time-ordered UUIDs (version 7) instantly. Pick a count, choose lowercase or uppercase, hyphens or no hyphens, and copy individual or bulk UUIDs in one click.
How to generate UUIDs
1
Pick version
Choose UUID v4 (random) or v7 (timestamp-ordered).
2
Set count and format
Enter how many UUIDs to generate and adjust hyphens or case.
3
Copy or download
Copy the result to clipboard or download as a text file.
v4 and v7
Standard random v4 UUIDs and modern timestamp-ordered v7 for sortable IDs.
Format options
Toggle hyphens, uppercase, and braces to match your target system.
Bulk generation
Generate up to 1,000 UUIDs at once for testing or seed data.
Cryptographic
Uses crypto.randomUUID and crypto.getRandomValues — secure browser entropy.
FAQ
A UUID v4 is a 128-bit identifier with 122 random bits, giving a collision probability so small that you can treat them as unique.
UUID v7 is a newer format that embeds a Unix millisecond timestamp at the start, making the IDs naturally sortable by creation time.
Yes. The tool uses crypto.randomUUID and crypto.getRandomValues, which are seeded by the operating system's secure entropy pool.
Use v7 if you need sortable IDs (e.g. database primary keys). Use v4 for general-purpose unique identifiers.
Yes — up to 1,000 at a time. The result is plain text you can paste anywhere.