What Is a UUID Generator?
A UUID generator is a free online developer tool that creates Universally Unique Identifiers (UUIDs) — standardized 128-bit identifiers used to uniquely identify records, transactions, files, sessions, and entities in software systems. Codersly’s UUID Generator creates UUID version 4 (v4) values, which are randomly generated and statistically guaranteed to be globally unique.
What Is a UUID?
A UUID (Universally Unique Identifier), also known as a GUID (Globally Unique Identifier), is a 128-bit value typically represented as a 32-character hexadecimal string divided into five groups by hyphens, in the format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx (e.g., 550e8400-e29b-41d4-a716-446655440000).
UUID v4 uses random number generation to produce identifiers that are unique enough that the probability of collision is astronomically small — making them safe to use as unique keys in distributed systems without coordination between systems.
Common Use Cases for UUIDs
- Database primary keys — use UUIDs as unique row identifiers in SQL or NoSQL databases.
- API resource identifiers — identify resources in REST APIs without exposing sequential integer IDs.
- Session tokens — generate unique tokens for user sessions, authentication flows, and temporary access.
- File naming — create unique filenames for uploaded files to prevent naming conflicts.
- Transaction IDs — uniquely identify financial transactions, orders, or events in distributed systems.
How to Generate UUIDs with Codersly
- Open the tool: Go to the Codersly UUID Generator.
- Select quantity: Choose how many UUIDs you need.
- Generate: Click generate and your UUID v4 values are created instantly.
- Copy: Copy the generated UUIDs for use in your application.
Frequently Asked Questions (FAQ)
Is the UUID generator free?
Yes. Completely free with no sign-up required.
Are the generated UUIDs truly unique?
UUID v4 values are randomly generated. The probability of generating the same UUID twice is so infinitesimally small that collisions are considered impossible in practice.
Can I generate multiple UUIDs at once?
Yes. The tool allows you to generate one or multiple UUID v4 values in a single operation.
Related Developer Tools
Also try: Password Generator, Timestamp Converter, and JSON Formatter.
Generate UUIDs Now
Create unique UUID v4 identifiers instantly with the free UUID Generator on Codersly. No account needed.