UUID Generator
Create random UUID v4 identifiers on this page. Generate one or a list, then copy them or download a TXT file.
How to use
- Set how many UUIDs you need (1 to 100).
- Generate. Each value is a UUID v4 (the same format people often call a GUID).
- Copy the list or download it as a text file.
How it works
A UUID (universally unique identifier) is a 128-bit label written as 32 hex digits in five groups. GUID is the same idea under a Microsoft name; the string form matches.
Version 4 is random: 122 bits come from a cryptographic RNG, four bits mark version 4, and two bits mark the RFC 4122 variant.
This page uses crypto.randomUUID() when the browser provides it, and a standards-compatible getRandomValues fallback otherwise. The result looks like 550e8400-e29b-41d4-a716-446655440000.
These are identifiers, not secrets — do not treat a UUID as a password. UUID v1 (time-plus-node) and UUID v7 (time-ordered) are not generated here.
Formula
128-bit value version nibble = 4 variant bits = 10xx (8, 9, a or b) text form = 8-4-4-4-12 hexadecimal groups
Worked examples
One UUID
Count 1 → One UUID v4 such as 550e8400-e29b-41d4-a716-446655440000
A list
Count 5, download TXT → Five UUIDs, one per line, in multiconvers-uuids.txt
Useful notes
- UUIDs are identifiers. They are not a substitute for a password.
- Generation is local. Values are not uploaded.
- “GUID generator” searches land here because a GUID uses the same 8-4-4-4-12 hex layout.
FAQ
- What is a UUID v4?
A 128-bit random identifier defined by RFC 4122. The version digit is 4, and the variant nibble is 8, 9, a or b.
- Is a GUID the same thing?
For practical purposes, yes. GUID is the common Windows name for the same 128-bit identifier written as 8-4-4-4-12 hex groups. This page generates UUID v4 values in that form.
- Can I generate more than one?
Yes. Set the count from 1 to 100, then generate. Copy the list or download it as a text file.
- Do you support UUID v7?
Not yet. This page only creates UUID v4.
- Are UUIDs uploaded?
No. They are created in your browser and are not sent to analytics.
- Can I use a UUID as a password?
No. A UUID is an identifier. Use the password generator if you need a secret.
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