Unix Epoch to Date
Supports both seconds (10 digits) and milliseconds (13 digits):
Date to Unix Epoch
Select local date & time to calculate matching Epoch timestamps:
About Unix Timestamp Converter
Computers track time not by using calendars and 24-hour clocks, but by counting elapsed seconds. The Unix Epoch began on January 1st, 1970, at 00:00:00 Coordinated Universal Time (UTC). The Unix Timestamp Converter is a client-side developer utility built to encode dates into numeric timestamps or decode Epoch numbers back into human-readable structures. Because the conversion scripts execute fully inside your browser session, your project schedules, database metrics, and server logging parameters remain 100% private and protected.
The decoder automatically checks whether you have entered a timestamp in seconds (common in UNIX utilities and programming languages like PHP or Python) or in milliseconds (native to Javascript and databases like MongoDB). It instantly outputs the date in UTC time, your browser's local time, and provides conversions across major business zones including New York, London, Tokyo, and Sydney. The encoder accepts local calendar selections, mapping the timeline back to seconds and milliseconds formats in real-time.
A flashing header indicator provides a live Unix clock showing current server time. Every output row has a dedicated copy-to-clipboard button, removing the friction of manual highlighting during server debugging, database seeding, or API integrations. Access this tool anytime without accounts, cookies, or tracking APIs.