UUID Generator
Generate up to 1,000 UUIDs at once, version 4 (random) or version 7 (time-ordered), in upper or lower case, with or without hyphens or braces, as a list, JSON, CSV or SQL.
Generate a v4 UUID
A version 4 UUID is 122 random bits from your browser's cryptographic random generator (crypto.randomUUID), with the version and variant bits set as RFC 9562 requires. The chance of two being the same is negligible.
Generate UUIDs in bulk
Set "How many" up to 1,000 and press Generate. Copy them, or download as a .txt.json.csv or .sql file.
UUID v4 vs v7 (and v1)
v7 puts the current time in milliseconds in the first 48 bits, then random bits, so new IDs sort in creation order; that makes them kinder to database indexes than random v4 IDs. v1 used the time and the machine's network address, which leaked information, so v7 replaces it.
Copy as JSON, CSV or SQL
JSON gives an array of strings, CSV a column with an "id" header, and SQL an INSERT ... VALUES statement to paste into a seed script.
Text to Result converter: free and online
Convert text to result in your browser: drop in a Text file and download the Result. The file is converted on your own device and never uploaded, so this text to result converter is safe for private and confidential files.
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On the blog: How to Make an UUID Online, Step by Step
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Questions
How do I convert Text to Result?
Drop your Text file on this page, check the preview, and press Download. The Result is made in a few seconds, with no sign-up.
Is my Text file uploaded anywhere?
No. The text to result conversion runs in your browser, on your own device. The file never leaves it.
Are these UUIDs unique?
For practical purposes, yes: they come from a cryptographic random source, and v7 adds the time.
Is a GUID the same as a UUID?
Yes. GUID is Microsoft's name for the same 128-bit format, often written in upper case in braces, which the options here produce.
Are they generated on a server?
No. They are made in your browser, so nobody else sees them.