Date Difference CalculatorCount the days, weeks, months and years between two dates, including working days with a weekend you choose.
Unix Timestamp Converter
Logs, databases and APIs store time as numbers like 1793145600. Paste one to see the date it represents, or pick a date and time to get its timestamp. The unit is detected automatically.
Date → timestamp
Runs entirely in your browser. Your input and files are not uploaded to any server.
How to use
- Paste a timestamp, or press “Now”.
- Read the date in UTC, your local time zone, ISO 8601 and relative form.
- To go the other way, choose a date and time below and copy the timestamp in seconds or milliseconds.
Examples
Seconds
1700000000 → 2023-11-14T22:13:20Z
Milliseconds
1700000000000 is detected as milliseconds automatically.
Privacy
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Frequently asked questions
How is the unit detected?
Values with up to 11 digits are treated as seconds, 12–14 digits as milliseconds and 15–17 digits as microseconds. You can override the guess.
What about the year 2038 problem?
JavaScript uses 64-bit numbers for dates, so this tool handles dates far beyond 2038. Systems that store seconds in signed 32-bit integers overflow on 19 January 2038.
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