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H1_Unix Timestamp Converter - Epoch to Date & Back | MultiTool

Convert Unix timestamps (seconds or milliseconds) to human-readable dates and vice versa, in local time or UTC. Live clock included.

CURRENT UNIX TIMESTAMP1790791851
Enter a valid timestamp (seconds or milliseconds)
1790791800 (1790791800000 ms)

How it works

The live clock shows the current Unix timestamp, updating every second. Convert any timestamp to a date (local or UTC), or any date to a timestamp — the tool auto-detects seconds vs milliseconds.

Why computers count from 1970

A Unix timestamp is simply the number of seconds elapsed since January 1, 1970, 00:00:00 UTC — the moment engineers call the Epoch. It is the common language of computing time: unambiguous (no time zones, no daylight saving, no month names), trivially sortable (bigger number = later), and perfect for arithmetic (subtract two timestamps and you get elapsed seconds).

  • Where you meet it: log files, APIs, databases, spreadsheet exports — any string of digits like 1762300000 that mystifies humans is probably one.
  • UTC, not local: timestamps are always UTC-based; converting to your local time is exactly what this tool does.
  • The Year 2038 problem: systems that store the counter in a signed 32-bit integer overflow on January 19, 2038 — a fun piece of trivia, and the reason modern systems moved to 64-bit counting long ago.
  • Milliseconds variant: some systems (JavaScript, Java) count milliseconds instead — the numbers are just 1000× longer. Check the digit count if a value looks wrong.

Your privacy

Everything runs entirely in your browser. Nothing you type is ever sent to any server or stored.

Frequently Asked Questions

What is a Unix timestamp?+

The number of seconds (or milliseconds) since January 1, 1970 UTC — the standard way computers store time.

Does it auto-detect seconds vs milliseconds?+

Yes — 10-digit values are treated as seconds, 13-digit as milliseconds.

Why does my timestamp look wrong?+

Check the units: many APIs return milliseconds. The tool handles both.

Is local time different from UTC?+

Yes — local time depends on your device's time zone; UTC is the global standard. Toggle between them.

Who uses Unix timestamps?+

Developers, databases (PostgreSQL, MySQL), APIs and log files.

Is it free?+

Yes, completely free with no account.

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