UUID Decoder
Decode UUID strings to expose version, variant, and component fields for developers, QA engineers, and security researchers.
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Worked Example & Common Values
Below is a sample worked calculation demonstrating how UUID Decoder processes input data instantly inside your browser.
Minified string: {"id":1,"status":"active","roles":["admin"]}
{
"id": 1,
"status": "active",
"roles": [
"admin"
]
}
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About This Tool
Conceptually it normalizes input, ignores case, and then splits into the canonical five fields: time_low (8 hex), time_mid (4 hex), time_high_and_version (4 hex), clock_seq (4 hex), and node (12 hex). It extracts the version and variant bits from the appropriate positions and reports them together with the raw and decimal values. For version 1 UUIDs, it computes a rough timestamp from the time fields when possible and presents a human-date approximation. Outputs are available in both hex and integer forms.
Key differentiators include strict RFC 4122 compliance, immediate results from a single string input, robust validation of length and hex characters, and clear error signaling for malformed inputs. It operates offline with no dependencies and returns a canonical, normalized representation, enabling reproducible debugging across Python, JavaScript, Java, and database layers. It also tolerates mixed-case input and trims extraneous separators.
Typical use cases: validating data pipelines that generate or store UUIDs, debugging legacy datasets, auditing logs, or supporting security reviews by confirming version and variant. Outputs are script-friendly, suitable for integration into CI pipelines or test suites. The tool favors speed and determinism, helping teams reduce debugging time and improve data integrity in software systems.
How to Use
- Provide the UUID string input in standard or compact form.
- The tool validates format, normalizes case, and prepares fields for decoding.
- It decodes the segments, determines version and variant, and computes optional numeric values.
- Review the decoded components and, if version 1, see a timestamp approximation where available.
- Copy or export the structured outputs for use in code, tests, or documentation.
Frequently Asked Questions
Find Quick Answers
What formats does it support?
Does it verify RFC 4122 compliance?
Can it extract a timestamp from version 1 UUIDs?
Is it usable from code in multiple languages?
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