Chicago time to Tokyo time
Tokyo is 15 hours ahead of Chicago in January and 14 hours ahead of in July (Chicago GMT-5/UTC−05:00 in summer; Tokyo GMT+9/UTC+09:00). Enter a Chicago time below to convert it, or leave it blank to see the current time in both cities.
How to use the Chicago to Tokyo time
- Type a Chicago time (24-hour) and optionally a date, or leave blank for now.
- Click Convert.
- Read the Tokyo time and the working-hours table.
Time difference between Chicago and Tokyo
Tokyo is 15 hours ahead of Chicago in January and 14 hours ahead of in July. Chicago observes daylight saving time and Tokyo does not, so the difference changes twice a year. Chicago uses America/Chicago time (UTC−06:00 in January, UTC−05:00 in July); Tokyo uses Asia/Tokyo (UTC+09:00 in January, UTC+09:00 in July).
Working week in Chicago and Tokyo
Chicago: Central Time, one hour behind New York: CDT (UTC−5) in summer, CST (UTC−6) in winter. Weekend Saturday–Sunday.
Tokyo: Japan Standard Time, UTC+9 all year; Japan has never adopted daylight saving. Office hours 09:00–18:00, weekend Saturday–Sunday; Golden Week (late April–early May) and Obon (mid-August) are holiday periods.
Quick conversion table (summer difference)
| Chicago | Tokyo |
|---|---|
| 08:00 | 22:00 |
| 09:00 | 23:00 |
| 10:00 | 00:00 (next day) |
| 12:00 | 02:00 (next day) |
| 14:00 | 04:00 (next day) |
| 16:00 | 06:00 (next day) |
| 18:00 | 08:00 (next day) |
| 20:00 | 10:00 (next day) |
| 22:00 | 12:00 (next day) |
Table uses the July difference; the tool above applies the exact rule for any date.
Best time to call between Chicago and Tokyo
Within normal office hours (09:00–18:00) in both cities: no overlap within 09:00–18:00; one side must take an early or late call. For a compromise outside that window, the fairest slots are the ones nearest each side's start or end of day, alternating who takes the inconvenient hour.
Reverse
Need the other direction? See Tokyo to Chicago, or the general time zone converter.
Frequently asked questions
How many hours ahead is Tokyo from Chicago?
Tokyo is 15 hours ahead of Chicago in January and 14 hours ahead of in July.
When it is 12:00 noon in Chicago, what time is it in Tokyo?
02:00 in summer (); use the tool for a specific date.
Does the converter handle daylight saving?
Yes, for the exact date you enter, using the IANA time-zone rules in your browser.
Privacy
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Last updated 2026-09-23.