Processing your request...
Generate RFC 4122-compliant UUID v4 and v1-style unique identifiers
0d1d95ef-e494-46f8-ada4-0a45ef1e2938Discover the powerful capabilities of our uuid generator.
Generate RFC 4122-compliant UUID v4 using the browser's crypto API for true randomness
Generate 1 to 100 UUIDs at once — copy all with one click
Generate time-based UUID v1-style identifiers using current timestamp
Toggle between uppercase and lowercase output formats instantly
Copy a single UUID or all generated UUIDs to clipboard at once
All UUIDs are generated client-side — 100% private, no network requests
Discover tools that complement your workflow
Generate QR codes for text, URLs, and contact information
Generate strong, secure passwords with advanced customization options
Convert colors between HEX, RGB, HSL, and other formats
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files
Tools that work great together with UUID Generator
Discover all 39 free tools — text, image, developer, SEO, calculators and more
Browse All ToolsThe UUID Generator is a free, browser-based utility designed for everyday productivity. Generate RFC 4122-compliant UUID v4 and v1-style unique identifiers Unlike desktop software that requires installation, this tool runs entirely in your browser — meaning no downloads, no accounts, and no data ever sent to a server. You get instant results right in your tab.
Whether you are a developer, student, writer, or designer, the UUID Generator saves time by automating repetitive tasks that would otherwise require expensive software or technical knowledge. It is completely free with no usage limits — use it as many times as you need.
There are many tools available online for everyday productivity, but the UUID Generator on AppyGrid stands out for several reasons:
Getting started with the UUID Generator takes less than a minute. Here is a detailed walkthrough:
Set Count
Enter how many UUIDs you need (1–100)
Choose Version
Select UUID v4 for cryptographic randomness or v1-style for time-based IDs
Pick Format
Choose lowercase or UPPERCASE output
Generate & Copy
Click Generate, then copy individual UUIDs or all at once
The entire process typically takes under 30 seconds. The UUID Generator is designed for speed — no waiting for server processing, no upload progress bars, and no page reloads.
The UUID Generator is used by a wide range of professionals and enthusiasts across different fields. Here are some common use cases:
No matter your background or use case, the UUID Generator delivers fast, accurate results without the overhead of heavyweight software or complex setup.
Here are detailed answers to the most common questions about the UUID Generator:
A UUID (Universally Unique Identifier) is a 128-bit label used to uniquely identify information in computer systems. The standard format is 32 hexadecimal digits displayed in 5 groups separated by hyphens: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.
UUID v4 is randomly generated using cryptographically secure random numbers — there's no predictable pattern. UUID v1 is time-based, embedding a timestamp and node identifier. Our v1-style approximates this using the current timestamp, but without a MAC address node component.
UUID v4 has 122 bits of randomness, giving approximately 5.3 × 10^36 possible values. The probability of a collision is astronomically small — you'd need to generate 1 billion UUIDs per second for 85 years to have a 50% chance of one collision.
Yes. UUID v4 is widely used as primary keys in distributed databases where auto-increment integers would cause conflicts. Note that UUID keys are larger than integers and may affect index performance at very large scales — UUID v7 (sequential) is preferred for high-performance databases.
UUID v4 generation uses the browser's built-in `crypto.randomUUID()` API (WebCrypto), which is cryptographically secure. The generation is entirely client-side — nothing is sent to any server.
The UUID standard specifies lowercase hex digits. However, UUIDs are case-insensitive, and many systems accept either form. Use lowercase unless your specific system requires uppercase.
AppyGrid is a free online tools platform built for developers, writers, designers, and everyday users. Every tool on AppyGrid — including the UUID Generator — is free, requires no account, and processes data entirely in your browser. We believe that useful utilities should be accessible to everyone, everywhere, without paywalls or data collection.
The UUID Generator is one of 38+ free tools available on AppyGrid, covering everyday productivity, text processing, image editing, SEO, calculators, and more. Related tags for this tool include: uuid, guid, unique, identifier, generator.
Sponsored links. AppyGrid may earn a commission at no extra cost to you.
Join developers and creators getting early access to new AppyGrid tools. No spam, unsubscribe anytime.
No spam. Unsubscribe anytime.