San Mateo to Chicago time converter

Chicago is 2 hours ahead of San Mateo. When it is 9:00 AM in San Mateo, it is 11:00 AM in Chicago.

San Mateo PDT

Wednesday, October 21, 2026

Chicago CDT

Wednesday, October 21, 2026

San Mateo
California, United States
Wed, Oct 21
PDTUTC-7
Chicago
Illinois, United States
Wed, Oct 21
CDTUTC-5+2h
Finding your time zone…
Shared working hours (9:00–18:00)

San Mateo to Chicago conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 4:00 PM in San Mateo (11:00 AM – 6:00 PM in Chicago).

Daylight saving time and the difference

The difference changes during the year because San Mateo and Chicago switch clocks on different dates:

  • Oct 21, 2026 – Nov 1, 2026: +2h
  • Nov 1, 2026 – Nov 1, 2026: +1h
  • Nov 1, 2026 – Mar 14, 2027: +2h
  • Mar 14, 2027 – Mar 14, 2027: +3h
  • Mar 14, 2027 – Oct 21, 2027: +2h

Distance

San Mateo and Chicago are 2,984 km (1,854 miles) apart in a straight line.

More conversions

Chicago to San MateoSan Mateo to New YorkSan Mateo to LondonSan Mateo to Los AngelesSan Mateo to TorontoSan Mateo to São PauloSan Mateo to ParisSan Mateo to BerlinSan Mateo to MoscowSan Mateo to DubaiSan Mateo to New DelhiSan Mateo to BangkokSan Mateo to Singapore
New York to ChicagoLondon to ChicagoLos Angeles to ChicagoToronto to ChicagoSão Paulo to ChicagoParis to ChicagoBerlin to ChicagoMoscow to ChicagoDubai to ChicagoNew Delhi to ChicagoBangkok to ChicagoSingapore to Chicago

Questions and answers

What is the time difference between San Mateo and Chicago?

Chicago is 2 hours ahead of San Mateo.

What time is it in Chicago when it is 9 AM in San Mateo?

When it is 9:00 AM in San Mateo, it is 11:00 AM in Chicago.

When is the best time to call Chicago from San Mateo?

Both sides are at work from 9:00 AM – 4:00 PM in San Mateo (11:00 AM – 6:00 PM in Chicago).

Does the time difference between San Mateo and Chicago change?

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