Timestamp Converter
Convert Unix timestamps to human-readable dates (UTC, local, ISO 8601) or dates back to Unix epoch time.
06:14:56
Friday, June 26, 2026
Frequently asked questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC (the Unix epoch). It is a universal way to represent a point in time as a single integer, used widely in databases, APIs, and programming.
What is the difference between seconds and milliseconds timestamps?
Unix timestamps are traditionally in seconds (10 digits). JavaScript uses milliseconds (13 digits). For example, 1700000000 is seconds; 1700000000000 is the same moment in milliseconds. This tool auto-detects which one you entered.
What is the maximum Unix timestamp?
The maximum 32-bit signed Unix timestamp is 2,147,483,647, which corresponds to January 19, 2038 at 03:14:07 UTC. This is the '2038 problem'. 64-bit systems extend this far beyond the foreseeable future.
What is ISO 8601?
ISO 8601 is an international standard for representing dates and times as strings, e.g. '2024-01-15T12:00:00.000Z'. The 'Z' at the end means UTC. It is the format used by JSON APIs and is directly parseable by JavaScript's Date object.
What does UTC mean?
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. Unix timestamps are always in UTC, and converting to local time depends on your device's timezone setting.