Free online Unix timestamp converter. Turn a timestamp into a readable date or convert a date back to a timestamp, with automatic seconds (10-digit) and milliseconds (13-digit) detection, plus a live current timestamp — essential for development and debugging.
Timestamp input auto-detects seconds (10 digits) or milliseconds (13). Date conversion uses your local timezone.
A Unix timestamp is the number of seconds (or milliseconds) since 1970-01-01 UTC. Programs and databases use it because it's just a number — easy to compare and compute. But no human reads 1718000000 as a date, so you convert to and from ordinary dates.
Reading logs, wiring up APIs, checking a database created_at, or debugging 'why is the time off by 8 hours' all need it. Be clear whether it's seconds or milliseconds (a factor of 1000) and mind the time zone — the timestamp is UTC and you convert to local for display.
The same timestamp shows a different clock time in different zones, yet represents the same instant. For cross-zone data, store UTC and convert to local only for display — the least error-prone approach. For other conversions, see our unit converter.
A Unix timestamp is the number of seconds (or milliseconds) elapsed since 1970-01-01 00:00:00 UTC, commonly used in code and databases.
10 digits is usually seconds (e.g. 1700000000) and 13 digits is milliseconds. The tool auto-detects and converts.
Date conversion uses your device's local timezone, and the UTC time is also shown for reference.