Timestamp Converter

Convert Unix timestamps to ISO 8601 dates and back. Live current-time display.

Current Unix time

Unix timestamp (seconds or milliseconds — auto-detected)

ISO 8601 date

About this tool

Two-way conversion between Unix timestamps and human-readable ISO 8601 dates. The Unix input auto-detects seconds vs milliseconds by string length — anything longer than 10 characters is treated as milliseconds. Also shows the current Unix time updating live at the top so you can grab now-ish timestamps quickly.