Milliseconds to Date Converter

Convert milliseconds (13-digit Unix timestamp) to human-readable date and time. Perfect for JavaScript, Java, and modern web applications.

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates. Calculate time differences and elapsed time. Supports batch operations and all time units.

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Timestamp To Date
Convert Unix timestamps to human-readable dates. Auto-detects seconds, milliseconds, microseconds, or nanoseconds.

Supports up to 1000 items. Auto-detects format or select manually below.

About Unix Timestamps

What is a Unix Timestamp?

A Unix timestamp (also known as Epoch time) is the number of time units that have elapsed since January 1, 1970 00:00:00 UTC. It's a universal time representation used in computing systems worldwide.

Common Units

  • Seconds: Standard Unix timestamp (10 digits)
  • Milliseconds: JavaScript/Java standard (13 digits)
  • Microseconds: Python/PHP precision (16 digits)
  • Nanoseconds: Maximum precision (19 digits)

Milliseconds to Date Converter - Free Online Tool

Convert 13-digit millisecond timestamps commonly used in JavaScript, Java, and modern APIs to human-readable dates. Millisecond precision is the standard for web applications and provides accuracy to 1/1000th of a second.

Understanding Millisecond Timestamps

Millisecond timestamps are 13-digit numbers representing the number of milliseconds since the Unix epoch (January 1, 1970, 00:00:00 UTC). This format is the standard in JavaScript's Date.now(), Java's System.currentTimeMillis(), and most modern web APIs.

Programming Examples

// JavaScript
const timestamp = Date.now(); // 1704067200000
const date = new Date(timestamp);

// Java
long timestamp = System.currentTimeMillis();
Date date = new Date(timestamp);

// Python
import time
timestamp = int(time.time() * 1000)

// PHP
$timestamp = round(microtime(true) * 1000);

Frequently Asked Questions

What's the difference between Unix timestamp formats?

Unix timestamps come in different precisions: seconds (10 digits), milliseconds (13 digits), microseconds (16 digits), and nanoseconds (19 digits). The format depends on the system and required precision.

How do I know which timestamp format to use?

Check the number of digits: 10 = seconds (Unix/Linux), 13 = milliseconds (JavaScript/Java), 16 = microseconds (Python/PHP), 19 = nanoseconds (high-precision systems).

Are Unix timestamps timezone-aware?

Unix timestamps are always in UTC (Coordinated Universal Time). When converting to a date, you can display it in any timezone, but the timestamp itself represents a single moment in time globally.