Encoding & Security
UUID Generator
Generate one or more RFC 4122 v4 UUIDs.
UUID Generator
Generated UUIDs
9ab6e16a-7075-49fd-90e5-62d99b7925dd 444245f4-e699-4a74-a9e7-ab5c026ff9e9 1299117c-cc09-4fb0-8478-ca60f871fd04 dd0255e9-1325-4c7d-8e17-c960642212ea 616c7839-6dc0-4966-84bb-1901f81615ac
Why UUID generation is common
A UUID generator is useful when you need unique identifiers for records, mock data, API payloads, or testing. It gives you IDs that are easy to copy into databases, fixtures, and app state.
This is especially helpful for developers working with forms, sample objects, migration scripts, or frontend state where duplicate IDs cause bugs quickly.
UUID generator FAQ
What is a UUID used for?
UUIDs are commonly used as unique identifiers for database rows, API resources, test fixtures, sessions, and application objects.
Why use a UUID instead of an incremental ID?
A UUID is easier to generate independently across clients and systems without coordinating a single numeric sequence.
Related developer tools
JSON Formatter
Pretty-print raw JSON with configurable indentation.
JavaScript Minifier
Minify JavaScript into a compact production-style snippet.
SQL to CSV
Convert SQL INSERT rows into CSV.
Semver Comparator
Compare two semantic version strings.
Keyword Density Checker
Measure keyword frequency and density in text.