Unix Timestamp Converter
100% PrivateDeveloper ToolsConvert Unix timestamps to readable dates and times, and dates back to timestamps.
Runs entirely in your browser. Your input is not uploaded to Ovatly or anywhere else.
- 1Paste a timestamp, or press Use current time.
- 2Leave the unit on Auto-detect, or force seconds or milliseconds if you know which you have.
- 3Read the UTC, ISO and local conversions and the relative description.
- 4To go the other way, pick a date and time in the lower half and read its timestamp.
The timestamp 1700000000 converts to Tuesday, 14 November 2023 at 22:13:20 UTC (ISO: 2023-11-14T22:13:20.000Z). In milliseconds the same moment is 1700000000000, which the converter detects automatically from its length.
- Auto-detection treats values of 1 trillion or more as milliseconds and smaller values as seconds. A millisecond value from before 2001 could be misread, so use the unit selector when it matters.
- The date-to-timestamp direction interprets the picked time in your local time zone, and says so on the result.
- Values beyond the range JavaScript dates support (about 275,000 years either way) are reported as errors.
Current timestamps in seconds have 10 digits; in milliseconds they have 13. If your number has 13 digits it is almost certainly milliseconds. The converter auto-detects this and shows which unit it used.
About this tool
The Unix Timestamp Converter translates epoch values into readable dates and back. It auto-detects seconds versus milliseconds, shows UTC, ISO 8601 and your local time together, and adds a plain relative description like "3 days ago", which is exactly what you need when reading logs, APIs and database rows.
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Part of Ovatly's free tools in Developer Tools.