CST to UTC converter

CST to UTC quick reference

CST or CDT? Daylight saving explained

CST (UTC−6) is the winter name and CDT (UTC−5) the summer name. “CST” usually means local Central time (Chicago, Dallas, Houston) whatever the season, so MeetETA reads it that way and handles daylight saving for the date you pick.

UTC is the world’s reference time. It never changes for daylight saving; every other zone is described as an offset from it.

Right now Chicago is on CDT, UTC−5 and UTC is on UTC, UTC+0 (the clocks at the top of the page always show the live values).

How the gap changes during the year

UTC is 5 hours ahead of Chicago while Chicago is on CDT, and 6 hours ahead of Chicago while Chicago is on CST.

Working-day overlap, hour by hour

Each row is an hour in Chicago. Green means that side is inside a 9–5 working day. While Chicago is on CDT there is 3 h of shared 9–5 time; the easiest window is 7 AM–5 PM CDT (12 PM–10 PM UTC). While Chicago is on CST there is 2 h of shared 9–5 time; the easiest window is 7 AM–4 PM CST (1 PM–10 PM UTC).

Shows Chicago 5 AM to 10 PM. Times on the UTC side may fall on the next day.

Example conversions

Questions people ask

What is the time difference between CST and UTC?

UTC is 5 h ahead of Chicago while Chicago is on CDT, and 6 h ahead of Chicago while Chicago is on CST. Right now it is 5 h.

Does the CST to UTC difference change with daylight saving?

Yes. US Central Time changes its clocks and Coordinated Universal Time does not, so the gap moves by an hour twice a year (next on Sun 1 Nov 2026).

How do I convert 3 PM CST to UTC?

While Chicago is on CDT, 3 PM CDT is 8 PM UTC. While Chicago is on CST, 3 PM CST is 9 PM UTC. Or just type “3 PM CST” in the converter at the top of this page.

When can US Central time and UTC meet during work hours?

While Chicago is on CDT there is 3 h of shared 9–5 time; the most comfortable window is 7 AM–5 PM CDT (12 PM–10 PM UTC). While Chicago is on CST there is 2 h of shared 9–5 time; the most comfortable window is 7 AM–4 PM CST (1 PM–10 PM UTC).

What time is 9 PM UTC in CST?

While Chicago is on CDT, 9 PM UTC is 4 PM CDT. While Chicago is on CST, 9 PM UTC is 3 PM CST. For other times, type something like “9 PM UTC” in the converter.

Should I write CST or CDT?

CST (UTC−6) is the winter name and CDT (UTC−5) the summer name. “CST” usually means local Central time (Chicago, Dallas, Houston) whatever the season, so MeetETA reads it that way and handles daylight saving for the date you pick.

Is MeetETA free?

Yes. MeetETA is free, shows no ads and needs no account. Your cities and settings stay in your browser, and where consent is required, analytics only load after you accept cookies.