Central Standard Time (cst) is used in USA. The IANA timezone identifier is America/Chicago.

Brasilia Time (brt) is used in Brazil. The IANA timezone identifier is America/Sao_Paulo.

CST to BRT Time Converter

Central Standard Time → Brasilia Time

CST = UTC-5BRT = UTC-3

⚠️ CST is ambiguous — on this page it means Central Standard Time. It also refers to:

China Standard Time (Beijing) → BRT ↗Cuba Standard Time (Havana) → BRT ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

BRT (São Paulo)

Brazil · +2h

11:00

London

United Kingdom · +6h

15:00

New York

USA · +1h

10:00

Tokyo

Japan · +14h

23:00

Dubai

United Arab Emirates · +9h

18:00

How far apart are CST (Chicago) and BRT (São Paulo)?

CST (Chicago) is 2 hours behind BRT (São Paulo). Midday in CST (Chicago) lines up with 14:00 in BRT (São Paulo).

CST (Chicago) is in the America/Chicago timezone. BRT (São Paulo) is in America/Sao_Paulo. The difference is 2 hours.

Daily overlap window

There is a 6-hour window each day where both CST (Chicago) and BRT (São Paulo) are within standard business hours (09:00–17:00).

00:0006:0012:0018:0024:00

CST (Chicago)

BRT (São Paulo)

Overlap (6h)

When to schedule across time zones

Both CST (Chicago) and BRT (São Paulo) are in standard hours simultaneously for 6h per day. 3 recommended slots shown below.

09:00 Chicago / 11:00 São Paulo✓ Both working

10:00 Chicago / 12:00 São Paulo✓ Both working

11:00 Chicago / 13:00 São Paulo✓ Both working

Based on standard 09:00–17:00 working hours in each location's local time.

Upcoming public holidays

⚡ Watch out — upcoming holidays on both sides. Verify availability in advance.

CST (Chicago)7 holidays

Jul 3Independence DaySOON

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

Nov 11Veterans Day

BRT (São Paulo)7 holidays

Jul 9Constitutionalist Revolution of 1932SOON

Sep 7Independence Day

Oct 12Our Lady of Aparecida

Nov 2All Souls' Day

Nov 15Republic Proclamation Day

How to work with CST (Chicago) and BRT (São Paulo) time zones

Working across CST (Chicago) (USA) and BRT (São Paulo) (Brazil) involves a 2-hour gap. The good news: there is a 6-hour mutual window in standard business hours that lets both sides collaborate without anyone joining at an unreasonable hour.

💡 How to schedule across these time zones

✅

09:00–10:00 in CST (Chicago) = 11:00–12:00 in BRT (São Paulo). Both sides are in standard business hours during this window.

✅

10:00–11:00 in CST (Chicago) = 12:00–13:00 in BRT (São Paulo). Both sides are in standard business hours during this window.

✅

11:00–12:00 in CST (Chicago) = 13:00–14:00 in BRT (São Paulo). Both sides are in standard business hours during this window.

DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.

Get the Extension — Free →

Use the time slider above to find the exact equivalent time for any moment in CST (Chicago). The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.

CST (Chicago) ↔ BRT (São Paulo)

6h of business hours overlap daily (09:00–17:00)

CST (Chicago)

BRT (São Paulo)

00:00

02:00

01:00

03:00

02:00

04:00

03:00

05:00

04:00

06:00

05:00

07:00

06:00

08:00

07:00

09:00Working

08:00

10:00Working

09:00Working

11:00Working

10:00Working

12:00Working

11:00Working

13:00Working

12:00Working

14:00Working

13:00Working

15:00Working

14:00Working

16:00Working

15:00Working

17:00off

16:00Working

18:00off

17:00

19:00

18:00

20:00

19:00

21:00

20:00

22:00

21:00

23:00

22:00

00:00+1d

23:00

01:00+1d

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between cst and brt?

Central Standard Time (cst) is UTC-5 and Brasilia Time (brt) is UTC-3. The difference between them is 2 hours.

Where is cst used?

Central Standard Time (cst) is used in USA and surrounding regions. The IANA timezone identifier is America/Chicago. Note: cst is ambiguous and may refer to other timezones.

Where is brt used?

Brasilia Time (brt) is used in Brazil and surrounding regions. The IANA timezone identifier is America/Sao_Paulo.

How do I convert cst to brt?

Use the interactive converter above. Drag the time slider to any cst time and the brt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular CST conversions

CST → London CST → New York CST → Tokyo CST → Dubai CST → Sydney CST → Paris CST → Berlin CST → Singapore CST → Los Angeles CST → Toronto

Popular BRT conversions

London → BRT New York → BRT Tokyo → BRT Dubai → BRT Sydney → BRT Paris → BRT Berlin → BRT Singapore → BRT Los Angeles → BRT Toronto → BRT