UUID / GUID Generator Online
Generate cryptographically secure version 4 random UUIDs and GUIDs with custom batch quantities
Generated UUIDs (5)
- #1 367487c4-e7b5-4d41-9e0f-8a012f3fa237
- #2 d972da85-3b58-43c9-aa4c-3715a4206150
- #3 285dc603-5912-4ce7-abbb-2aba32d6bf65
- #4 7f83b376-0e9c-4718-bbcb-b9e9ad7751e1
- #5 973cc1d4-749e-4522-afa1-132f3b892a61
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What is a Universally Unique Identifier (UUID / GUID)?
A UUID (Universally Unique Identifier), also known in Microsoft ecosystems as a GUID (Globally Unique Identifier), is a 128-bit standardized label defined by RFC 4122. Because UUIDs have a virtually infinite keyspace (approximately 3.4 × 10³⁸ distinct values), systems can generate identifiers independently across distributed networks without centralized coordination or collision risk.
Version 4 UUID Format
A standard UUID v4 consists of 32 hexadecimal digits displayed in 5 groups separated by hyphens (8-4-4-4-12):
xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxxWhere 4 indicates the version, and y indicates the variant (8, 9, a, or b).