Unix Epoch Timestamp Converter

Translate Epoch timestamps to human dates, or compile standard datetimes to Unix time. 100% offline.

Current Unix Timestamp

0000000000

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Unix Epoch → Date Translator

Unix Epoch Timestamp

UTC/GMT Date -

Local Date -

Relative Time -

Human Date → Epoch Translator

Datetime Selector

Assume Selected Time As

Epoch (Seconds) -

Epoch (MS) -

HEX Value -

What is Unix Epoch Time?

Unix Epoch time (also referred to as POSIX time or Epoch time) is a system for describing points in time, defined as the number of elapsed **seconds** (or milliseconds) since **Thursday, January 1, 1970**, at 00:00:00 Coordinated Universal Time (UTC), minus leap seconds.

It is widely used in computing systems, databases, operating systems, and file formats because comparing, sorting, and storing a single integer is significantly faster and less error-prone than parsing text date strings with differing local timezone formats.

Frequently Asked Questions (FAQ)

What is the difference between seconds and milliseconds timestamps?

Standard Unix timestamps represent the number of **seconds** since the epoch (10 digits, e.g. `1780581781`). High-precision applications and JavaScript APIs (like `Date.now()`) use **milliseconds** (13 digits, e.g. `1780581781000`). This converter automatically detects and handles both formats based on string length.

What is the "Year 2038 problem"?

On January 19, 2038, 32-bit signed integer representations of Unix Epoch time will overflow because the maximum value is `2,147,483,647`. Systems that are not updated to 64-bit integers by that date will wrap around to negative numbers, resetting the calendar to 1901. JavaScript natively stores numbers as double-precision floats, which are safe from this overflow.

How does timezone offset affect Epoch timestamps?

Epoch time is **always in UTC**. It represents a single, absolute point in time across the entire globe simultaneously. The representation changes only when formatting the date into human-readable text according to a specific local timezone offset (e.g. EST, GMT, or IST).