Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates.

Overview

Converts Unix epoch timestamps (seconds and milliseconds) into human-readable ISO-8601, UTC, and local date-time strings.

Date_String = new Date(Unix_Timestamp_Seconds × 1000).toISOString()

Counts the number of non-leap seconds elapsed since January 1, 1970 00:00:00 UTC (the Unix Epoch).

Inputs: Unix Timestamp = 1700000000 (Seconds)

Summary: Timestamp = 1700000000 | UTC Date = Nov 15, 2023 02:40:00 UTC | Relative: Past Event

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The starting point for Unix time: 00:00:00 Coordinated Universal Time (UTC) on Thursday, January 1, 1970.

A 10-digit timestamp (e.g. 1700000000) is in seconds; a 13-digit timestamp (e.g. 1700000000000) is in milliseconds.

32-bit signed integers will overflow on January 19, 2038; modern 64-bit systems have already resolved this issue.

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