CST to AST Converter

AST is 2h 0m ahead of CST. When it's 12:00 PM CST, it's 2:00 PM AST.

From

CST · UTC-6

10:09:44PM

Central Standard Time

e.g. Chicago, Mexico City

To

AST · UTC-4

12:09:44AM

Atlantic Standard Time

e.g. Halifax, Puerto Rico

Open in World ClockAST → CST
9:00 AM CST=11:00 AM AST
12:00 PM CST=2:00 PM AST
5:00 PM CST=7:00 PM AST

Hourly conversion (CST → AST)

CSTAST
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)

Shaded rows are within standard working hours (8am–6pm) on both sides.

CST here is US/Canada Central Time (UTC−6). It can also mean China Standard Time (UTC+8) or Cuba Standard Time; the summer daylight variant is CDT (UTC−5).

More CST conversions

Frequently asked questions

What is the time difference between CST and AST?
AST is 2h 0m ahead of CST. CST is UTC-6 and AST is UTC-4.
What is 12:00 PM CST in AST?
12:00 PM CST is 2:00 PM AST.
Does CST change for daylight saving time?
CST here is US/Canada Central Time (UTC−6). It can also mean China Standard Time (UTC+8) or Cuba Standard Time; the summer daylight variant is CDT (UTC−5).