Unix Timestamp Converter
Convert epoch time to a date and back — seconds, millis, micros & nanos
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Frequently asked questions
What is a Unix timestamp?⌄
It is the number of seconds (or milliseconds, microseconds, nanoseconds) elapsed since 00:00:00 UTC on 1 January 1970, the Unix epoch. It is timezone-independent, which makes it a compact, unambiguous way to store a moment in time.
How do you detect seconds vs milliseconds?⌄
By the number of digits: a 10-digit value is seconds, 13 digits is milliseconds, 16 is microseconds and 19 is nanoseconds. Automatic detection covers dates from 2001 to 2286; you can override the unit with the selector if your value falls outside that range.
Which timezone are the results in?⌄
The “Local” row uses your device timezone and locale via the Intl API; “UTC” and “ISO 8601” are always in UTC. The date-to-timestamp field interprets the date you pick in your local timezone.