Date and time
Unix Timestamp Converter
Convert readable local dates to Unix seconds or milliseconds, and turn timestamps back into UTC and local time.
Current Unix time
Seconds
Milliseconds
Date to timestamp
Unix seconds
Unix milliseconds
UTC ISO 8601
Your local time
Timestamp to date
Detected unit
UTC ISO 8601
Your local time
Relative time
Local conversion. Dates and timestamps remain in your browser.
Seconds or milliseconds?
Unix time traditionally counts seconds since 00:00:00 UTC on 1 January 1970. JavaScript and many browser APIs use milliseconds instead. A current timestamp therefore usually has about ten digits in seconds and thirteen digits in milliseconds.
The converter can detect the likely unit automatically, but you can select it explicitly when working with older or unusual dates. A datetime-local value is interpreted in the timezone configured in your browser, then also shown as UTC.
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