A free online Unix timestamp converter. Transform Unix timestamps (seconds or milliseconds) to readable dates in ISO, local, and UTC formats. Or convert any date/time to a Unix timestamp. Includes a live current timestamp display.
For timestamp to date: enter a Unix timestamp (seconds or ms).
View the formatted date in ISO, local, UTC, and relative formats.
For date to timestamp: pick a date and time.
View and copy the resulting Unix timestamp.
A Unix timestamp is the number of seconds (or milliseconds) that have elapsed since January 1, 1970 UTC (the Unix Epoch). It is widely used in databases, APIs, and logging systems.
Timestamps in seconds are typically 10 digits (e.g., 1700000000), while milliseconds are 13 digits (e.g., 1700000000000). The converter auto-detects based on the digit count.
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