About Unix Timestamp Converter
Dual-direction Unix epoch timestamp converter translating between seconds/milliseconds timestamps and human-readable UTC/local date strings across all global time zones.
Key features
- Bidirectional conversion: epoch timestamps to calendar dates and calendar dates to epoch timestamps.
- Automatic detection of seconds (10 digits), milliseconds (13 digits), and microseconds (16 digits).
- Multi-format date display: ISO 8601, RFC 2822, UTC calendar date, and local system timezone.
- Quick-jump buttons to view current timestamp and relative time differences.
How to use
- Enter Timestamp or Calendar Date: Paste a numeric epoch timestamp or pick a calendar date and time.
- Select Unit Scale: Choose seconds, milliseconds, or allow auto-detection of the timestamp resolution.
- Copy Converted Date or Epoch: Copy the ISO 8601 string, UTC timestamp, or local datetime to your clipboard.
FAQ
What is a Unix epoch timestamp?
It represents the total elapsed seconds since January 1, 1970, 00:00:00 UTC, not counting leap seconds.
How do I tell if a timestamp is in seconds or milliseconds?
Modern timestamps in seconds have 10 digits (e.g. 1700000000), while millisecond timestamps have 13 digits (e.g. 1700000000000).
What is the Year 2038 problem (Y2038)?
32-bit signed integers will overflow on January 19, 2038; this tool utilizes 64-bit JavaScript numbers safe for millions of years.
Does the converter account for daylight saving time (DST)?
Yes, your browser local timezone calculation automatically handles regional DST offsets.