How to Convert Unix Timestamps & Epoch to Human-Readable Dates

Published: 2026-02-11 | Read Time: 3 min read

Convert Unix epoch timestamps (in seconds, milliseconds, microseconds) to local time, UTC, and standardized ISO 8601 strings.

Frequently Asked Questions

How do I know if my timestamp is in seconds or milliseconds?

Timestamps in seconds have 10 digits (e.g. `1771142400`), while timestamps in milliseconds have 13 digits (e.g. `1771142400000`).