Time zone helper

Time Zone Converter

Compare a date string across any two time zones (defaulting to UTC and JST).

Guide

How to use & features

Type into either the UTC or JST input and the paired field updates automatically.
Copy the converted time to coordinate releases or investigations across time zones.
You can edit seconds or milliseconds directly if needed.
All calculations are performed locally in your browser.

Input

From time zone

To time zone

Result