UTC to EST vs UTC to CST:
One Hour Apart, Different Cities
EST is UTC minus 5. CST is UTC minus 6. They're one hour apart and cover the two most populated time zones in the US. Here's exactly how they differ.
Open UTC to EST ConverterThe Core Difference: One Hour
Eastern Standard Time (EST) is UTC minus 5. Central Standard Time (CST) is UTC minus 6. That means EST is always one hour ahead of CST. When it's 9 AM in New York (EST), it's 8 AM in Chicago (CST). When a UTC time converts to 1 PM EST, it simultaneously converts to noon CST.
The formula difference is simple. For UTC to EST conversion, subtract 5 from the UTC hour. For UTC to CST conversion, subtract 6. For any UTC time, the CST result will always be one hour earlier than the EST result.
In summer, both zones shift forward one hour for daylight saving: EST becomes EDT (UTC minus 4) and CST becomes CDT (UTC minus 5). The one-hour gap between them remains the same year-round.
The rule: EST = UTC minus 5. CST = UTC minus 6. EST is always one hour ahead of CST. EDT is UTC minus 4; CDT is UTC minus 5. The gap never changes.
Side-by-Side UTC Conversion Table
Here's the most common UTC hours and what they mean in both Eastern and Central Time.
| UTC | EST (UTC−5) | EDT (UTC−4) | CST (UTC−6) | CDT (UTC−5) |
|---|---|---|---|---|
| 0000 | 7:00 PM prev. | 8:00 PM prev. | 6:00 PM prev. | 7:00 PM prev. |
| 1200 | 7:00 AM | 8:00 AM | 6:00 AM | 7:00 AM |
| 1300 | 8:00 AM | 9:00 AM | 7:00 AM | 8:00 AM |
| 1400 | 9:00 AM | 10:00 AM | 8:00 AM | 9:00 AM |
| 1500 | 10:00 AM | 11:00 AM | 9:00 AM | 10:00 AM |
| 1600 | 11:00 AM | 12:00 PM | 10:00 AM | 11:00 AM |
| 1700 | 12:00 PM | 1:00 PM | 11:00 AM | 12:00 PM |
| 1800 | 1:00 PM | 2:00 PM | 12:00 PM | 1:00 PM |
| 1900 | 2:00 PM | 3:00 PM | 1:00 PM | 2:00 PM |
| 2000 | 3:00 PM | 4:00 PM | 2:00 PM | 3:00 PM |
| 2100 | 4:00 PM | 5:00 PM | 3:00 PM | 4:00 PM |
| 2200 | 5:00 PM | 6:00 PM | 4:00 PM | 5:00 PM |
Which Cities Are in Eastern vs. Central Time?
The Eastern Time Zone covers the entire northeastern US and most of the Southeast. The Central Time Zone sits to the west of it, covering most of the Midwest and South-Central states.
Major Eastern Time cities (EST/EDT): New York City, Philadelphia, Boston, Washington D.C., Atlanta, Miami, Orlando, Tampa, Charlotte, Raleigh, Richmond, Baltimore, Pittsburgh, Columbus, Cleveland, Cincinnati, Detroit, and Indianapolis.
Major Central Time cities (CST/CDT): Chicago, Houston, Dallas, San Antonio, Austin, Fort Worth, Minneapolis, Kansas City, New Orleans, Memphis, Nashville, Milwaukee, Oklahoma City, Omaha, and Winnipeg (Canada).
A few cities near the time zone boundary are worth knowing. Memphis is Central while Nashville is also Central, even though they're both in Tennessee. The eastern part of Tennessee (Knoxville, Chattanooga) is Eastern Time. Similar splits exist in Indiana, Kentucky, and Florida near their western panhandles.
Daylight Saving: EST to EDT and CST to CDT
Both time zones observe daylight saving on the same schedule. When the clocks spring forward in March, Eastern goes from EST (UTC minus 5) to EDT (UTC minus 4), and Central goes from CST (UTC minus 6) to CDT (UTC minus 5). Both fall back in November on the same day.
The relationship between them never changes. Eastern is always one hour ahead of Central, whether they're on standard or daylight time.
The one tricky situation: during summer, CDT (Central Daylight) and EST (Eastern Standard) would be the same offset (UTC minus 5) — but this situation doesn't actually occur in practice because both zones observe daylight saving at the same time. When Central is on CDT, Eastern is on EDT. So in summer: EDT is UTC minus 4 and CDT is UTC minus 5, still one hour apart.
How to Convert UTC to CST
The math is straightforward. Subtract 6 from the UTC hour for CST. If the result is 13 or higher, subtract 12 to convert to PM. If it goes below zero, add 24 and move to the previous calendar day.
Examples: 18 UTC minus 6 equals 12, which is noon CST. 20 UTC minus 6 equals 14, minus 12 equals 2:00 PM CST. 04 UTC minus 6 equals negative 2, plus 24 equals 22, which is 10:00 PM CST the previous day.
For CDT in summer, subtract 5 instead of 6.
Convert UTC to EST Instantly
The free converter handles EST and EDT automatically for today's date. For CST conversions, apply the same logic and subtract one additional hour.
Open the EST ConverterFrequently Asked Questions
EST (Eastern Standard Time) is UTC minus 5. CST (Central Standard Time) is UTC minus 6. EST is one hour ahead of CST. So when it's noon in Chicago (CST), it's 1 PM in New York (EST). In summer, both shift forward one hour to EDT (UTC minus 4) and CDT (UTC minus 5) respectively, maintaining the same one-hour gap.
Subtract 6 hours from UTC to get CST. So 18 UTC is 12:00 PM noon CST, 20 UTC is 2:00 PM CST, and 0 UTC is 6:00 PM CST the previous day. During daylight saving (CDT), subtract 5 hours instead of 6. This is exactly one more hour of subtraction than the UTC to EST formula.
Chicago is on Central Time, which means CST (UTC minus 6) in winter and CDT (UTC minus 5) in summer. Chicago is consistently one hour behind New York, which is on Eastern Time. If it's 2 PM in New York, it's 1 PM in Chicago.
1700 UTC is 11:00 AM CST in winter. Subtract 6 from 17 to get 11. During daylight saving (CDT, UTC minus 5), 1700 UTC becomes 12:00 PM noon CDT. Compare that to EST where 1700 UTC is noon in winter and 1 PM in summer — exactly one hour ahead of CST at all times.
All US time zones except Hawaii (Hawaii-Aleutian Standard Time, HAST) and most of Arizona (Mountain Standard Time, MST) observe daylight saving. Eastern, Central, Mountain, and Pacific all spring forward in March and fall back in November on the same weekend. Arizona stays on MST year-round; Hawaii stays on HAST year-round.
The Quick Summary
EST is UTC minus 5, CST is UTC minus 6. Eastern is always one hour ahead of Central. The gap is consistent year-round across both standard and daylight saving time. To convert any UTC time to CST, subtract one additional hour beyond what you'd subtract for UTC to EST. The table above covers every major UTC hour across both zones.
