Generate universally unique identifiers (UUID) in one click. Version 4 (random) or version 7 (time-ordered). Batch generation up to 100 UUIDs. Free, no sign-up — everything happens in your browser.
UUID v4 uses cryptographically secure random numbers. Best for general-purpose unique identifiers.
Generate UUID v4 and v7 instantly. Batch up to 100 identifiers. Standard or no-dash format. Free, no sign-up, 100% browser-based. Whether you need this for personal projects, professional work, or quick one-off tasks — our browser-based tool handles it instantly with no installation, no signup, and no file uploads to external servers. Everything runs locally in your browser for maximum speed and privacy.
Debugging and inspecting data during development and testing. Converting between formats for API integration and data pipelines. Formatting and validating code or data before committing to repositories. Quick data transformations when setting up development environments. Testing and prototyping with sample data in various formats. Documenting APIs, configurations, or data structures for team reference.
All processing happens entirely in your browser — no files are uploaded to any server, ensuring complete privacy. Instant results with real-time preview as you type or paste. Supports standard formats and edge cases (Unicode, escaped characters, nested structures). Copy results to clipboard with one click. Import from files or paste directly. Handles large inputs (100KB+) without performance issues. Dark mode friendly interface designed for developer workflows.
Select UUID v4 (random — best for general use) or UUID v7 (time-ordered — best for database keys).
Choose how many UUIDs to generate (1-100) and your preferred format: with dashes, without dashes, uppercase or lowercase.
Click Generate, then use Copy All to copy all UUIDs to your clipboard at once.
UUID v1 combines a timestamp with the device's MAC address. While it guarantees uniqueness, it exposes the creator's network identity and creation time, raising privacy concerns. It's rarely used in modern applications.
UUID v4 is the most widely used version. All 122 bits (excluding 6 version/variant bits) are randomly generated using a cryptographically secure random number generator. It's simple, private, and has an astronomically low collision probability.
v4 random vs v7 time-orderedAwesomeToolkit generates UUIDs entirely in your browser. For v4, we use crypto.randomUUID() when available, falling back to crypto.getRandomValues(). For v7, we combine Date.now() with crypto.getRandomValues().
No UUID, no configuration, no data of any kind is ever sent to our servers. The tool works completely offline once the page is loaded.
100% browser-based generationEverything you need to know about our UUID/GUID generator