Chicago to Tokyo Time Converter
Tokyo, Japan is currently 14 hours ahead of Chicago, US. Chicago is on CDT (UTC-5) and Tokyo is on JST (UTC+9). The table below converts every hour of the day between the two, and the call planner shows where working hours line up.
Best Time for a Call
There is no overlap between 9:00 AM and 5:00 PM office hours in these two zones. Stretching to early mornings and evenings, the workable window runs from 7:00 AM to 7:00 AM in Chicago, which is 9:00 PM to 9:00 PM in Tokyo. One side ends up outside normal hours, so alternating who takes the awkward slot is a fair way to handle recurring calls.
Comparing more than two places? The Overlap Zones tool shows working hours for several cities on one grid.
Hour by Hour: Chicago to Tokyo
Rows marked office hours fall between 9:00 AM and 5:00 PM in both places. For a specific date, use the interactive converter.
Does the Difference Change During the Year?
The difference between Chicago and Tokyo is not fixed. It is 15 hours in January and 14 hours in July, because the two places handle daylight saving differently. This page always reflects the current offsets.
Frequently Asked Questions
How many hours ahead is Tokyo compared to Chicago?
Tokyo is currently 14 hours ahead of Chicago. The difference between Chicago and Tokyo is not fixed. It is 15 hours in January and 14 hours in July, because the two places handle daylight saving differently. This page always reflects the current offsets.
What time is 9:00 AM in Chicago in Tokyo?
9:00 AM in Chicago is 11:00 PM in Tokyo.
What is the best time for a call between Chicago and Tokyo?
There is no overlap between 9:00 AM and 5:00 PM office hours in these two zones. Stretching to early mornings and evenings, the workable window runs from 7:00 AM to 7:00 AM in Chicago, which is 9:00 PM to 9:00 PM in Tokyo. One side ends up outside normal hours, so alternating who takes the awkward slot is a fair way to handle recurring calls.