Converts Unix timestamps (seconds or milliseconds since epoch) to human-readable date-times, and converts date-times back to Unix timestamps. Shows the result in UTC and your local timezone simultaneously.
Does it support millisecond timestamps?
Yes. Auto-detects whether the input is seconds (10 digits) or milliseconds (13 digits) and converts accordingly.
Can I convert a date I type to a timestamp?
Yes. Enter any date-time string (ISO 8601 or natural language like 'Jan 1, 2025 12:00 PM') and get the Unix timestamp.
Why do different systems use different timestamp formats?
Unix time counts seconds since 1970-01-01T00:00:00Z. JavaScript Date, Java, and some APIs use milliseconds. Some databases use microseconds. The converter handles all three.