Timestamp Converter
Convert between Unix timestamps and human-readable dates in UTC and local time.
Image tools Client-side Date API
Tool preview
How to use it
- 01
Paste a timestamp or an ISO date.
- 02
Read both representations.
- 03
Copy the value you need.
Limitations
- ! Ten-digit values are treated as seconds, longer values as milliseconds.
- ! Local time depends on this browser, not on the server.
FAQ
What is a Unix timestamp?
Seconds elapsed since 1 January 1970 UTC, ignoring leap seconds.
Why is my date off by hours?
The input was interpreted as local time while the source used UTC, or vice versa.
Does it handle year 2038?
Yes, JavaScript numbers cover a much wider range than 32-bit time.
Files never leave your device
Processing happens in your browser using the File API, WebAssembly and Web Workers. There is no upload endpoint.
Technical details
- Processing
- Client-side
- Implementation
- Date API
- Category
- Image tools
- Network requests
- None while processing