Time difference between Chicago and Boston

Boston is 1 hour ahead of Chicago.

United States · Central Daylight Time

2:41 AM

Wednesday, October 21, 2026

United States · Eastern Daylight Time

3:41 AM

Wednesday, October 21, 2026

Chicago to Boston time converter

Green rows are office hours in both places; light green rows are when both are awake.

What is the time difference between Chicago and Boston?

Boston is 1 hour ahead of Chicago. Chicago is on UTC−5 and Boston is on UTC−4.

What time is it in Boston when it is 9 AM in Chicago?

When it is 9:00 AM in Chicago, it is 10:00 AM in Boston.

When is the best time to call Boston from Chicago?

The best time to call or meet is 9:00 AM–5:00 PM in Chicago (10:00 AM–6:00 PM in Boston), when both places are in normal office hours.

Does the time difference between Chicago and Boston change?

Yes. Because of daylight saving time, the difference changes on Sunday, March 14, 2027, when Boston will be 2 hours ahead of Chicago.

Chicago is 1 hour behind Boston. More: time in Chicago · time in Boston