Timestamp Converter
Free online tool · runs in your browser
Convert Unix timestamps to dates.
Quick tutorial
- 1Enter a Unix timestamp or date string.
- 2Select seconds or milliseconds.
- 3Click Convert or use Now for current time.
Free online timestamp converter
Convert Unix epoch timestamps to human-readable dates and the reverse. Toggle seconds vs milliseconds, paste an epoch or a date string, and get ISO 8601 UTC plus local time. Use Now to capture the current epoch. Conversion is local, so log timestamps never leave your machine.
How to use Timestamp Converter
- Enter a Unix timestamp or date string.
- Select seconds or milliseconds.
- Click Convert or use Now for current time.
Limitations
- Date parsing depends on browser locale for non-ISO input.
Example
Input
1704067200
Output
ISO 8601 (UTC): 2024-01-01T00:00:00.000Z
FAQ
Frequently Asked Questions
Is my timestamp in seconds or milliseconds?
Seconds are 10 digits (e.g. 1704067200); milliseconds are 13 digits. Use the unit toggle if the date looks wrong by ~50 years.
What is Unix epoch time?
The number of seconds (or milliseconds) since 1970-01-01T00:00:00Z.
Seconds or milliseconds?
Toggle the unit selector. JS Date uses milliseconds internally.
Is Timestamp Converter free to use?
Yes. Timestamp Converter on ShadowReference is free, with no account, no watermarks, and no server-side processing.
Does this tool send my data to a server?
No. All processing happens locally in your browser. Your input never leaves your device.
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