Timestamp Converter

Convert Unix timestamps to readable dates and back.

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How to Use

  1. 1Enter a Unix timestamp, or click "Now" to use the current time.
  2. 2View the converted date in local time and UTC.
  3. 3Or enter a date to get its Unix timestamp.

Features

  • Supports seconds and milliseconds
  • Shows local time and UTC
  • "Now" button for the current time

Example

Input

1735689600

Output

Jan 1, 2025, 12:00:00 AM UTC

Convert between Unix timestamps (seconds or milliseconds) and human-readable dates, including your local timezone and UTC.

What a Unix timestamp is

A Unix timestamp counts the seconds since 00:00:00 UTC on 1 January 1970, the “Unix epoch”. It is how most databases, APIs, log files and programming languages store moments in time, because a single number is easy to compare, sort and do arithmetic with, and it is the same everywhere in the world regardless of time zone.

Seconds or milliseconds?

Unix systems and most APIs use seconds (10 digits for current dates, e.g. 1735689600). JavaScript, Java and many front-end libraries use milliseconds (13 digits, e.g. 1735689600000). The converter detects which one you pasted by its size, so you do not have to choose.

TimestampDate (UTC)
01 January 1970, 00:00:00
10000000009 September 2001, 01:46:40
17356896001 January 2025, 00:00:00
214748364719 January 2038, 03:14:07

Reading the results

  • Local time is shown in your device's time zone, including the zone name.
  • UTC is the universal reference time that servers and logs normally use.
  • ISO 8601 (2025-01-01T00:00:00.000Z) is the standard text format for exchanging dates between systems. The Z means UTC.

You can also go the other way: pick a date and time to get its timestamp, which is handy for API queries, database filters and setting expiry times.

The year 2038 problem: systems that store timestamps as signed 32-bit integers overflow after 2147483647, on 19 January 2038. Modern systems use 64-bit values, but it is worth checking in older embedded software and databases.

Frequently Asked Questions