Generate secure, random universally unique identifiers (v4) instantly in your browser.
Max 10,000 per generation.
A UUID (Universally Unique Identifier), also known as a GUID (Globally Unique Identifier), is a 128-bit label used for information in computer systems. The standard representation is 32 hexadecimal digits displayed in five groups separated by hyphens, in the form 8-4-4-4-12 for a total of 36 characters.
Yes. The probability of a collision (generating the same v4 UUID twice) is vanishingly small. You would need to generate 1 billion UUIDs per second for 85 years to reach a 50% chance of a single collision.
UUID (Universally Unique Identifier) is the open standard. GUID (Globally Unique Identifier) is Microsoft's implementation of the UUID standard. For practical purposes, they are the exact same thing.