Unix Timestamp Converter — Epoch Time Converter

Convert between Unix timestamps and human-readable dates. See the current timestamp update live.

Unit:

Timestamp to Date

Unix Timestamp (seconds)

Date to Timestamp

Date & Time

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How to unix timestamp converter

1.Enter a Unix timestamp (in seconds or milliseconds) to see the corresponding date
2.Or use the date picker to convert a date to a Unix timestamp
3.Click 'Current Timestamp' to see the live-updating current epoch time
4.Toggle between seconds and milliseconds as needed

About This Tool

A Unix timestamp (also called epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970 at 00:00:00 UTC. It is the most common way to represent time in programming because it is a simple integer that is unambiguous across time zones.

This converter translates timestamps to multiple human-readable formats: UTC date and time, your local date and time, ISO 8601 format (used in APIs and databases), and a relative description like "3 days ago" or "in 2 hours". It also converts in the reverse direction, turning a date and time into a Unix timestamp.

The live clock shows the current timestamp updating every second, which is useful when you need to grab the current epoch time for testing or debugging. You can toggle between seconds and milliseconds precision, as some systems (like JavaScript's Date.now()) use milliseconds.

Frequently Asked Questions

The Unix epoch is January 1, 1970, 00:00:00 UTC. All Unix timestamps are measured as the number of seconds (or milliseconds) since this moment. It was chosen as an arbitrary but convenient starting point by early Unix developers.

Standard Unix timestamps are in seconds (10 digits as of 2001). JavaScript's Date.now() and many APIs use milliseconds (13 digits). The tool auto-detects based on the number of digits, or you can toggle manually.

Yes. 32-bit signed integers overflow on January 19, 2038. Most modern systems now use 64-bit integers for timestamps, which extends the range far beyond any practical concern. This tool uses JavaScript's 64-bit number type.

Unix timestamps are always UTC. The tool shows both the UTC time and your local time (based on your browser's time zone setting) so you can compare them side by side.