Chicago to St. Charles time converter

St. Charles is 1 hour ahead of Chicago. When it is 9:00 AM in Chicago, it is 10:00 AM in St. Charles.

Chicago CDT

Sunday, October 18, 2026

St. Charles EDT

Sunday, October 18, 2026

Chicago
Illinois, United States
Sun, Oct 18
CDTUTC-5
St. Charles
Maryland, United States
Sun, Oct 18
EDTUTC-4+1h
Finding your time zone…
Shared working hours (9:00–18:00)

Chicago to St. Charles conversion table

Every hour of today in Chicago and the matching time in St. Charles. Light rows are typical working hours (9:00–18:00).

ChicagoSt. Charles
12:00 AM1:00 AM
1:00 AM2:00 AM
2:00 AM3:00 AM
3:00 AM4:00 AM
4:00 AM5:00 AM
5:00 AM6:00 AM
6:00 AM7:00 AM
7:00 AM8:00 AM
8:00 AM9:00 AM
9:00 AM10:00 AM
10:00 AM11:00 AM
11:00 AM12:00 PM
12:00 PM1:00 PM
1:00 PM2:00 PM
2:00 PM3:00 PM
3:00 PM4:00 PM
4:00 PM5:00 PM
5:00 PM6:00 PM
6:00 PM7:00 PM
7:00 PM8:00 PM
8:00 PM9:00 PM
9:00 PM10:00 PM
10:00 PM11:00 PM
11:00 PM12:00 AM+1 day

Best time to call or meet

Both sides are at work from 9:00 AM – 5:00 PM in Chicago (10:00 AM – 6:00 PM in St. Charles).

Daylight saving time and the difference

The difference changes during the year because Chicago and St. Charles switch clocks on different dates:

  • Oct 18, 2026 – Nov 1, 2026: +1h
  • Nov 1, 2026 – Nov 1, 2026: ±0
  • Nov 1, 2026 – Mar 14, 2027: +1h
  • Mar 14, 2027 – Mar 14, 2027: +2h
  • Mar 14, 2027 – Oct 18, 2027: +1h

Distance

Chicago and St. Charles are 978 km (608 miles) apart in a straight line.

More conversions

St. Charles to ChicagoChicago to New YorkChicago to LondonChicago to Los AngelesChicago to TorontoChicago to São PauloChicago to ParisChicago to BerlinChicago to MoscowChicago to DubaiChicago to New DelhiChicago to BangkokChicago to Singapore
New York to St. CharlesLondon to St. CharlesLos Angeles to St. CharlesToronto to St. CharlesSão Paulo to St. CharlesParis to St. CharlesBerlin to St. CharlesMoscow to St. CharlesDubai to St. CharlesNew Delhi to St. CharlesBangkok to St. CharlesSingapore to St. Charles

Questions and answers

What is the time difference between Chicago and St. Charles?

St. Charles is 1 hour ahead of Chicago.

What time is it in St. Charles when it is 9 AM in Chicago?

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

When is the best time to call St. Charles from Chicago?

Both sides are at work from 9:00 AM – 5:00 PM in Chicago (10:00 AM – 6:00 PM in St. Charles).

Does the time difference between Chicago and St. Charles change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.