timestamp

Local-first · millisecond precise

One instant.
Every useful representation.

Convert Unix time, UTC, and your browser’s local time without sending a value anywhere.

Timestamp console

Date and time ↔ Unix

Date and time

Choose how this wall-clock time is interpreted.

Unix timestamp

Seconds accept up to three decimal places; milliseconds are whole numbers.

Exact representations

How it works

One value, synchronized everywhere.

Edit either side. Timestamp keeps Unix seconds, milliseconds, UTC, and local time tied to the same exact instant.

Privacy

Your timestamps stay in this tab.

Conversion happens entirely in your browser. No account, history, tracking, or network request contains what you enter.