UUID Generator
UUID (Universally Unique Identifier) is a 128-bit number used to identify information in computer systems.
The number of possible UUIDs is 16³², or 2¹²⁸, approximately 3.4×10³⁸.
Generate up to 50 UUIDs at once
v3/v5 Options
💡 Instructions
Supports generating NIL, v1, v3, v4, v5 versions of UUID. v4 is the most commonly used random UUID version.
💡 About UUID Generator: UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems. Our free UUID Generator supports generating UUID v1 (time-based), v3 (name-based MD5), v4 (random), v5 (name-based SHA-1), and NIL UUIDs. Perfect for database keys, API authentication, distributed systems, and any scenario requiring unique identifiers.
📝 UUID Version Guide:
• UUID v1: Time-based UUID using timestamp and MAC address
• UUID v3: Name-based UUID using MD5 hashing (namespace + name)
• UUID v4: Random UUID (most common, 122 random bits)
• UUID v5: Name-based UUID using SHA-1 hashing (namespace + name)
• NIL UUID: All zeros (00000000-0000-0000-0000-000000000000)
🔍 UUID Use Cases:
• Database primary keys
• API authentication tokens
• Distributed system identifiers
• Session IDs
• Transaction tracking
• File and resource naming
• UUID v1: Time-based UUID using timestamp and MAC address
• UUID v3: Name-based UUID using MD5 hashing (namespace + name)
• UUID v4: Random UUID (most common, 122 random bits)
• UUID v5: Name-based UUID using SHA-1 hashing (namespace + name)
• NIL UUID: All zeros (00000000-0000-0000-0000-000000000000)
🔍 UUID Use Cases:
• Database primary keys
• API authentication tokens
• Distributed system identifiers
• Session IDs
• Transaction tracking
• File and resource naming