Date Calculator
Difference between two dates, or add & subtract days, weeks, months and years — instantly in your browser.
Date Difference
Add or Subtract
How it works
Three simple steps —everything happens in your browser.
Enter a timestamp or date
Paste a Unix timestamp or type a human-readable date and time.
See both formats
The converter instantly shows the equivalent in both Unix and human-readable formats.
Copy and use
Click any output field to copy the value. Use the current time button for now.
Features
Bidirectional Conversion
Convert timestamp to date or date to timestamp in one page.
Live Unix Clock
Watch the current Unix timestamp tick in real time.
UTC & Local Time
See both UTC and your local timezone for every conversion.
Seconds & Milliseconds
Auto-detects whether input is in seconds (10 digits) or milliseconds (13 digits).
Why choose Ercc Timestamp Converter?
Bidirectional conversion
Convert Unix timestamp to date or date to Unix timestamp with one click.
No data leaves your browser
All conversion is done locally. No server calls, no logging.
Live current time
See the current Unix timestamp ticking in real time, always up to date.
Pro Tips
- ● Unix time is the number of seconds since January 1, 1970 00:00:00 UTC (the “epoch”).
- ● JavaScript’s Date.now() returns milliseconds. Divide by 1000 for seconds.
- ● The Year 2038 problem occurs when 32-bit systems overflow at timestamp 2,147,483,647.