Time difference between Chicago and San Francisco
Chicago is 2h ahead of San Francisco. This gap is the same all year — neither city shifts its clocks relative to the other.
Chicago
United States
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San Francisco
United States
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When the working days overlap
A 9-to-5 day in each city overlaps for 6h. That is 11:00–17:00 in Chicago, which is 09:00–15:00 in San Francisco.
Time zones compared
| City | Time zone | UTC offset |
|---|---|---|
| Chicago · United States | America/Chicago | UTC−5 |
| San Francisco · United States | America/Los_Angeles | UTC−7 |
Frequently asked questions
- What is the time difference between Chicago and San Francisco?
- Chicago is 2h ahead of San Francisco. This gap is the same all year — neither city shifts its clocks relative to the other.
- Does the time difference between Chicago and San Francisco change during the year?
- No. The gap stays at 2h all year.
- When is the best time to call San Francisco from Chicago?
- Between 11:00 and 17:00 in Chicago, which is 09:00 to 15:00 in San Francisco.