Tokyo time to Chicago time
Chicago is 15 hours behind Tokyo in January and 14 hours behind in July (Tokyo GMT+9/UTC+09:00 in summer; Chicago GMT-5/UTC−05:00). Enter a Tokyo time below to convert it, or leave it blank to see the current time in both cities.
How to use the Tokyo to Chicago time
- Type a Tokyo time (24-hour) and optionally a date, or leave blank for now.
- Click Convert.
- Read the Chicago time and the working-hours table.
Time difference between Tokyo and Chicago
Chicago is 15 hours behind Tokyo in January and 14 hours behind in July. Chicago observes daylight saving time and Tokyo does not, so the difference changes twice a year. Tokyo uses Asia/Tokyo time (UTC+09:00 in January, UTC+09:00 in July); Chicago uses America/Chicago (UTC−06:00 in January, UTC−05:00 in July).
Working week in Tokyo and Chicago
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.
Chicago: Central Time, one hour behind New York: CDT (UTC−5) in summer, CST (UTC−6) in winter. Weekend Saturday–Sunday.
Quick conversion table (summer difference)
| Tokyo | Chicago |
|---|---|
| 08:00 | 18:00 (previous day) |
| 09:00 | 19:00 (previous day) |
| 10:00 | 20:00 (previous day) |
| 12:00 | 22:00 (previous day) |
| 14:00 | 00:00 |
| 16:00 | 02:00 |
| 18:00 | 04:00 |
| 20:00 | 06:00 |
| 22:00 | 08:00 |
Table uses the July difference; the tool above applies the exact rule for any date.
Best time to call between Tokyo and Chicago
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 Chicago to Tokyo, or the general time zone converter.
Frequently asked questions
How many hours ahead is Chicago from Tokyo?
Chicago is 15 hours behind Tokyo in January and 14 hours behind in July.
When it is 12:00 noon in Tokyo, what time is it in Chicago?
22:00 in summer (the same or previous day); 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.