NTP Timestamp Converter
Convert a Network Time Protocol (NTP) timestamp — seconds since 1900 — to a readable date and back.
UTC / GMT
Your local time
ISO 8601
Relative
Unix seconds
Unix milliseconds
Current time updating:
How it works
Conversion: unix = ntp − 2208988800.
Enter a value to convert it to a human-readable date, or click Use current time. Conversion is two-way and runs entirely in your browser.
Frequently asked questions
What epoch does NTP use?
The Network Time Protocol counts seconds since 1900-01-01 00:00:00 UTC — 2,208,988,800 seconds before the Unix epoch.