CST to EST Converter
EST is 1 hour ahead of CST · EST → CST
CST
Central Standard Time · CDT · UTC-05:00
Current offset note
The live clocks use today's IANA timezone rules. Right now CST is displaying as CDT (UTC-05:00) and EST is displaying as EDT (UTC-04:00), so this table reflects the current real-world offset.
Best time to call
Schedule between 9:00 AM – 3:00 PM CST — that’s 10:00 AM – 4:00 PM EST. These are the overlapping business hours (9 AM – 5 PM) in both time zones.
Meeting planner for CST and EST
Use these notes for recurring calls, handoffs, webinars, and launch timing across both zones.
Current difference
EST is 1 hour ahead of CST using the current offsets shown by the live clocks.
Workday overlap
Overlap is strong: 9:00 AM – 3:00 PM CST equals 10:00 AM – 4:00 PM EST.
Recurring meetings
If either zone changes for daylight saving time, recheck the conversion before March-April and October-November meetings.
Quick Reference
| CST | EST |
|---|---|
| Midnight (00:00) | 1:00 AM |
| 6 AM (06:00) | 7:00 AM |
| 9 AM (09:00) | 10:00 AM |
| Noon (12:00) | 1:00 PM |
| 3 PM (15:00) | 4:00 PM |
| 6 PM (18:00) | 7:00 PM |
| 9 PM (21:00) | 10:00 PM |
CST to EST Conversion Table
Green rows indicate overlapping business hours (9 AM – 5 PM) in both zones
| CST (24h) | CST (12h) | EST (24h) | EST (12h) | |
|---|---|---|---|---|
| 00:00 | 12:00 AM | 01:00 | 1:00 AM | |
| 01:00 | 1:00 AM | 02:00 | 2:00 AM | |
| 02:00 | 2:00 AM | 03:00 | 3:00 AM | |
| 03:00 | 3:00 AM | 04:00 | 4:00 AM | |
| 04:00 | 4:00 AM | 05:00 | 5:00 AM | |
| 05:00 | 5:00 AM | 06:00 | 6:00 AM | |
| 06:00 | 6:00 AM | 07:00 | 7:00 AM | |
| 07:00 | 7:00 AM | 08:00 | 8:00 AM | |
| 08:00 | 8:00 AM | 09:00 | 9:00 AM | |
| 09:00 | 9:00 AM | 10:00 | 10:00 AM | ● |
| 10:00 | 10:00 AM | 11:00 | 11:00 AM | ● |
| 11:00 | 11:00 AM | 12:00 | 12:00 PM | ● |
| 12:00 | 12:00 PM | 13:00 | 1:00 PM | ● |
| 13:00 | 1:00 PM | 14:00 | 2:00 PM | ● |
| 14:00 | 2:00 PM | 15:00 | 3:00 PM | ● |
| 15:00 | 3:00 PM | 16:00 | 4:00 PM | ● |
| 16:00 | 4:00 PM | 17:00 | 5:00 PM | |
| 17:00 | 5:00 PM | 18:00 | 6:00 PM | |
| 18:00 | 6:00 PM | 19:00 | 7:00 PM | |
| 19:00 | 7:00 PM | 20:00 | 8:00 PM | |
| 20:00 | 8:00 PM | 21:00 | 9:00 PM | |
| 21:00 | 9:00 PM | 22:00 | 10:00 PM | |
| 22:00 | 10:00 PM | 23:00 | 11:00 PM | |
| 23:00 | 11:00 PM | 00:00 | 12:00 AM | next day |
About CST and EST
CST — Central Standard Time
| UTC offset | UTC-05:00 |
| IANA identifier | America/Chicago |
| Abbreviation | CST |
EST — Eastern Standard Time
| UTC offset | UTC-04:00 |
| IANA identifier | America/New_York |
| Abbreviation | EST |
Major cities: New York City.
Frequently Asked Questions
What is the time difference between CST and EST?
CST (Central Standard Time) is UTC-05:00, while EST (Eastern Standard Time) is UTC-04:00. EST is 1 hour ahead of CST. When it’s 12:00 PM (noon) in CST, it’s 1:00 PM in EST.
When is 9 AM CST in EST?
9:00 AM CST is 10:00 AM EST. This conversion is useful for scheduling morning meetings or calls across these time zones.
What is the best time to schedule a call between CST and EST?
The overlapping business hours are 9:00 AM – 3:00 PM CST, which corresponds to 10:00 AM – 4:00 PM EST. Green rows in the conversion table above mark these hours.
Does daylight saving time affect the CST to EST conversion?
Yes, if either time zone observes DST, the offset between them may change by 1 hour during spring and autumn transitions (typically March/April and October/November). The table above shows the current offset. Use the live clocks at the top of this page for real-time accuracy, or check our interactive converter for custom dates.
How do I convert CST to EST manually?
Add 1 hour to the CST time. For example, 2:00 PM CST + 1 hour = 3:00 PM EST. If the result is 24 or more, subtract 24 and add one day. If negative, add 24 and subtract one day.