UUID Validator
Validate a UUID string, inspect its version and variant, and compare the normalized lowercase form.
UUID Validator tool
Expected format: 8-4-4-4-12 hexadecimal characters with hyphens.
Result will appear here.
| Metric | Value |
|---|
Privacy: validation runs locally in your browser. No UUID data is stored or transmitted.
Paste a UUID string and validate it against the standard 8-4-4-4-12 format. The tool also reports UUID version and variant details.
Examples
- 550e8400-e29b-41d4-a716-446655440000 → valid UUID v4-style format
- Letters may be uppercase or lowercase in the input
- The normalized output is shown in lowercase
FAQ
- What does this UUID validator do?
It checks whether a string is a valid UUID and identifies the version and variant when possible.
- Which UUID versions are recognized?
The validator recognizes common UUID versions such as v1 through v5 when the input follows the standard format.
- Does it normalize uppercase and lowercase letters?
Yes. It can display the normalized lowercase UUID form for comparison.
- Is my UUID input stored?
No. Validation runs locally in your browser and is not stored or transmitted.