Developer Tools100% Client-Side Privacy
UUID / GUID Generator
Generate cryptographically secure Version 4 UUIDs in bulk with customizable casing, hyphens, and brackets.
Quantity:
Wrapping:
Generated v4 UUID List (0)RFC 4122 Compliant
About UUID / GUID Generator
Universally Unique Identifiers (UUIDv4) provide a 128-bit value practically guaranteed to be globally unique without a centralized coordinator. This tool utilizes your browser's crypto.getRandomValues API for true cryptographic entropy.
How to Use This Tool
- Choose the quantity of UUIDs you want to generate (1 to 100).
- Toggle formatting options: Lowercase/Uppercase, with or without hyphens, braces {}, or quotes.
- Click 'Generate UUIDs' or regenerate instantly.
- Copy all generated UUIDs to your clipboard or download as a text file.
Practical Examples & Use Cases
Standard v4 UUID
Expected Output
c9b740e2-349f-4318-971c-6878b277b0be
Standard 8-4-4-4-12 hex representation with RFC 4122 variant bits.
Frequently Asked Questions
The probability of a collision is about 1 in 2^122, which is so astronomically small that generating billions every second for centuries would still make a collision virtually impossible.
Related Developer & DevOps Tools
Developer Tools
Regex Tester & Debugger
Test and debug regular expressions in real time with regex flags, match tables, and common pattern presets.
Open Tool
Developer Tools
Base64 Encoder and Decoder
Encode text to Base64 or decode Base64 strings to UTF-8 text with URL-safe mode and byte statistics.
Open Tool
Developer Tools
Unix Timestamp Converter
Convert epoch seconds and milliseconds to human-readable UTC/local dates, or convert dates back to Unix timestamps.
Open Tool