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Timestamp Converter
Convert Unix timestamps in seconds or milliseconds into readable date formats for debugging, APIs, logs, and databases.
Frequently Asked Questions
A Unix timestamp is the number of seconds or milliseconds elapsed since January 1, 1970 UTC.
How this calculator works
Formula explanation
The tool interprets 10-digit values as seconds and 13-digit values as milliseconds, then converts them to standard date strings.
Worked example
Example: 1712179200 -> 2024-04-03T00:00:00.000Z
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