Online UUID Generator - Version 5

UUID Version 5 generates identifiers similarly to Version 3 but uses the SHA-1 hashing algorithm instead of MD5. It takes a namespace and a user-defined name as inputs, ensuring that the same inputs will always result in the same UUID.

Pros:

• Deterministic: Produces consistent UUIDs for the same name and namespace, making it ideal for generating repeatable unique IDs.
• Stronger Hashing: Uses SHA-1, which is more secure than MD5, reducing the likelihood of hash collisions.

Cons:

• Not Truly Random: UUID v5 is based on hashing, so it lacks randomness and is not suitable for security-sensitive applications requiring unpredictable IDs.
• Hashing Overhead: The SHA-1 algorithm is more computationally intensive than MD5, which may impact performance in some cases.

Best for: Scenarios where unique and consistent identifiers are needed from a specific namespace, such as generating IDs from URLs, usernames, or file paths.

Learn more about other UUID versions: Version 1, Version 3, Version 4, Version 6, Version 7 or go back to Online UUID Version 5 Generator