All tools · Date and time tools

Unix Timestamp

Convert between epoch time and human dates.

Free to use, no sign-up required. Unix Timestamp is one of 198 tools built into Xenition, alongside a chat that can use them for you.

Converts Unix epoch timestamps to readable dates and back, for anyone reading log files, API responses or database fields that store time as a number.

How to use Unix Timestamp

  1. Tap the current Unix time at the top to load it, or choose Timestamp → Date and type an epoch number.
  2. Read the result in your local time and in UTC (ISO 8601 format).
  3. To go the other way, choose Date → Timestamp and pick a date and time in your local time zone.
  4. Read the timestamp in Seconds and in Millis.

How it works

A Unix timestamp counts seconds since 1 January 1970 00:00:00 UTC. The tool accepts 1 to 13 digits: up to 10 digits is read as seconds, 11 to 13 digits as milliseconds. A picked date is read as local wall-clock time, and its seconds value is rounded down.

Example

1700000000 is 2023-11-14T22:13:20.000Z in UTC. With a device set to UTC, picking 1 January 2025 at 00:00:00 gives 1735689600 seconds, or 1735689600000 milliseconds.

Questions about Unix Timestamp

How do I tell seconds from milliseconds?

Present-day timestamps in seconds have 10 digits and in milliseconds 13. JavaScript and Java usually use milliseconds; Unix tools, PHP and most databases use seconds.

Does a Unix timestamp have a time zone?

No. It is the same number everywhere at a given moment. Only the readable date changes with the time zone, which is why the tool shows both local time and UTC.

Use it from chat

You do not have to open Unix Timestamp to use it. Ask Xenition in plain language and it runs the right tool, then carries the answer into whatever you are working on — a document, a spreadsheet, a deck.

Related tools