UUID Generator

The UUID Generator Tool is a reliable, developer-friendly utility designed to instantly create RFC 4122–compliant unique identifiers for databases, APIs, authentication flows, distributed systems, and large-scale backend architectures. It supports both random UUID v4 generation and deterministic UUID v5 generation using custom names and namespaces, making it ideal for everything from idempotent API design to entity mapping in microservices. With options for standard, uppercase, and no-dashes formatting, this tool helps developers generate clean, consistent, collision-resistant identifiers that work flawlessly across modern tech stacks. Whether you're seeding test data, building production-grade services, integrating with legacy systems, or ensuring consistency across multiple environments, this UUID generator offers speed, accuracy, and flexibility without compromising security or compliance.

Primary Use Cases

• •Generate random v4 UUIDs for database primary keys, API resources, and background jobs.
• •Create deterministic v5 UUIDs for the same entity across systems by using a consistent name and namespace.
• •Quickly copy valid UUIDs for use in config files, environment variables, and testing fixtures.
• •Standardize identifier formats across services using uppercase or no-dashes variants.
• •Use the tool as a reference to explain or demo how UUID generation works to junior developers.

How to Use

1. 1.Open the UUID Generator Tool and review the default UUID shown in the output box.
2. 2.Choose the desired UUID version in the UUID Version dropdown (v4 for random, v5 for name-based).
3. 3.If using v5, enter a name and a valid namespace UUID in the corresponding input fields.
4. 4.Select your preferred output format under Format Options (standard, uppercase, or no-dashes).
5. 5.Click the New button to generate a fresh UUID based on your selected options.
6. 6.Use the Copy button to copy the UUID to your clipboard and paste it wherever you need it.