Unix time
Seconds (or milliseconds) since 1970-01-01 UTC midnight. Common in APIs, logs, and databases.
Milliseconds
Values with 13+ digits are treated as milliseconds. APIs may differ—check the documentation.
How to use it
Paste a Unix timestamp and tap convert to see local date and time, or pick a date/time and convert to Unix seconds. Long values (13+ digits) are read as milliseconds. “Local” follows this device’s time-zone setting. When comparing with server logs, check UTC vs local and whether the source uses seconds or milliseconds.
Related information
Daylight saving shifts local offsets. Always verify whether an API returns seconds or milliseconds. For distributed systems, prefer storing UTC and converting for display.