conversions
CST to EST Converter
Last updated: May 31, 2026
Written by Blake Boege
A CST to EST timezone converter maps time offsets between the Central and Eastern time zones, accounting for daylight saving transitions.
Convert Central Time (CST/CDT) to Eastern Time (EST/EDT). Check current time zones, offsets, and view the hourly conversion table.
Quick Answer
Convert Central Time (CST/CDT) to Eastern Time (EST/EDT). CST is 1 hour behind EST. Updated dynamically relative to live clocks.
Convert time from CST
Current Live Offset: EST is 1 hour ahead of CST.
Select any custom hour or date above to compute the corresponding time in EST.
Time in EST (EST)
1:02 AM
Sunday, May 31, 2026
CDT to EDT Time Conversion Table
| Time in CDT | Time in EDT |
|---|---|
| 12:00 AM | sm1:00 AMsm |
| 3:00 AM | sm4:00 AMsm |
| 6:00 AM | sm7:00 AMsm |
| 9:00 AM | sm10:00 AMsm |
| 12:00 PM | sm1:00 PMsm |
| 3:00 PM | sm4:00 PMsm |
| 6:00 PM | sm7:00 PMsm |
| 9:00 PM | sm10:00 PMsm |
How it works
To convert time from CDT (Central Standard Time (CST) / Central Daylight Time (CDT)) to EDT (Eastern Standard Time (EST) / Eastern Daylight Time (EDT)), calculate the offset difference between the two timezones.
Current Timezone Offset
smEDT is 1 hour ahead of smCDT.
Calculation Rules
Formula: Time in EDT = Time in CDT + 1 hour
Current Time Offset between CST and EST
The current relationship between Central Standard Time (CST) / Central Daylight Time (CDT) and Eastern Standard Time (EST) / Eastern Daylight Time (EDT) is that smEDT is 1 hour ahead of smCDT. The offsets dynamically update depending on whether Daylight Saving Time (DST) is active in the United States.
How to convert CST to EST
To convert any local time between these zones, find the offset difference and shift the hours accordingly. If you cross a midnight boundary, the calendar date will shift forward or backward by one day.
Why Times Differ Between Regions
Time zones are structured based on longitudinal divisions around the globe, with solar noon aligning roughly with 12:00 PM local time. Daylight saving policies cause offsets to shift.
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Frequently asked questions
Currently, smsmEDT is 1 hour ahead of smCDT. For example, when it is 12:00 PM in smCDT, it is sm1:00 smPM in smEDT.
No, both timezones observe Daylight Saving Time (DST) on the exact same schedule in the United States. Therefore, the time difference between smCDT and smEDT remains constant at sm1 hours throughout the year.
To convert smCDT to smEDT, you simply smadd sm1 hoursm smto the current smCDT time. For example, if it is 3:00 PM smCDT, you smadd sm1 hoursm to get sm4:00 PM in smEDT.
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