生成各种版本的UUID
UUIDs (Universally Unique Identifiers) are 128-bit identifiers used to uniquely identify information in distributed systems. This free online UUID generator supports v1 (timestamp-based), v4 (random), and v5 (namespace-based) UUIDs. Generate single or batch UUIDs with customizable output format including uppercase, lowercase, and no-dash variants. Essential for database primary keys, API resource identifiers, session tokens, and distributed system architecture.
Select the UUID version (v1, v4, or v5), set the number of UUIDs to generate, choose your preferred output format, and click "Generate". Copy individual UUIDs or all generated ones at once.
A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems. It's represented as 32 hexadecimal digits displayed in five groups.
UUID v1 is based on the current timestamp and MAC address, making it time-ordered. UUID v4 is randomly generated, offering maximum randomness.
Yes, you can generate up to 1000 UUIDs at once with options for uppercase/lowercase and custom separators.