Developer Tools

Unix Timestamp
Converter

Convert epoch timestamps to readable dates and back — in your local timezone and UTC. Auto-detects seconds vs. milliseconds, with a live current-epoch clock.

Two-way

Local + UTC

Live clock

# epoch seconds
1700000000

# → date
Tue, 14 Nov 2023
22:13:20 UTC

Current Unix time

—

Timestamp → Date

Local time —

UTC —

ISO 8601 —

Relative —

Date → Timestamp

—

Frequently Asked Questions

What is a Unix timestamp?

A Unix timestamp is the number of seconds elapsed since 00:00:00 UTC on 1 January 1970 (the "epoch"). It is a timezone-independent way to store an exact moment in time.

Seconds or milliseconds — which is it?

Unix time is in seconds; JavaScript and many APIs use milliseconds (1000× larger). This tool auto-detects: 13-digit values are treated as milliseconds, 10-digit as seconds.

Why does the local time differ from UTC?

The same instant is shown in two zones: your browser's local timezone and Coordinated Universal Time (UTC). Servers usually log in UTC, so compare against that.

What is the year 2038 problem?

A signed 32-bit timestamp overflows on 19 January 2038. Modern 64-bit systems and languages avoid this, but legacy systems storing time in a 32-bit integer can still be affected.