ISO 8601
- 2021-01-01T12:00:00Z -> valid
data validator
Timestamp Validator
Validate ISO 8601 timestamps or epoch seconds/milliseconds client-side.
Results
Processing…- Status
- Processing...
- Details
- Processing...
- ISO 8601
- Processing...
- Type
- Processing...
Rules & checks
Accepts ISO 8601 date/time strings.
Accepts epoch seconds (10 digits) or milliseconds (13 digits).
Runs entirely client-side/offline; no data leaves the page.
When to use it
- QA API payloads and log timestamps
- Validate CSV imports/exports for dates
- Normalize timestamps before storing
Tips
- Prefer ISO 8601 (UTC) for portability
- Convert mixed epoch inputs to ISO before storing
Examples
Epoch seconds
- 1700000000 -> valid
Epoch ms
- 1700000000000 -> valid
Invalid
- not-a-date -> invalid
FAQs
- Is anything uploaded?
- No. Validation runs locally and clears on refresh.
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