Greenwich Mean Time to US Eastern Time
Convert times between Greenwich Mean Time (GMT, UTC+0:00) and US Eastern Time (EST, UTC-5:00). US Eastern Time is 5 hours behind Greenwich Mean Time in standard time.
UTC+0:00 / +1:00→UTC-5:00 / -4:00
Live timezone converterUTC Offset Reference
| Timezone | Abbreviation | Standard offset | DST offset | Country |
|---|---|---|---|---|
| Greenwich Mean Time | GMT / BST | UTC+0:00 | UTC+1:00 | United Kingdom |
| US Eastern Time | EST / EDT | UTC-5:00 | UTC-4:00 | United States |
* DST offset applies during summer months. Exact transition dates vary by year.
Standard Time Conversion (GMT → EST)
| Greenwich Mean Time | US Eastern Time |
|---|---|
| 12:00 AM GMT | 7:00 PM (prev day) EST |
| 6:00 AM GMT | 1:00 AM EST |
| 9:00 AM GMT | 4:00 AM EST |
| 12:00 PM GMT | 7:00 AM EST |
| 3:00 PM GMT | 10:00 AM EST |
| 6:00 PM GMT | 1:00 PM EST |
| 9:00 PM GMT | 4:00 PM EST |
Daylight Saving Time (DST) Notes
- Greenwich Mean Time observes DST. Clocks advance 1 hour to BST (UTC+1:00) roughly from month 3 to 10.
- US Eastern Time observes DST. Clocks advance 1 hour to EDT (UTC-4:00) roughly from month 3 to 11.
Frequently Asked Questions
How do I convert GMT to EST?
Add (-5) hours to the GMT time to get EST. For example, 9:00 AM GMT = 4:00 AM EST.
What is the current UTC offset for Greenwich Mean Time?
Greenwich Mean Time is UTC+0:00 during standard time (GMT) and UTC+1:00 during summer daylight saving time (BST).
Is US Eastern Time ahead or behind Greenwich Mean Time?
US Eastern Time is 5 hours behind Greenwich Mean Time in standard time.
When is a good time to schedule a meeting between GMT and EST?
A good overlap window is around 3:00 PM GMT / 10:00 AM EST, which falls within business hours for both timezones.
Related Timezone Conversions
Greenwich Mean Time → US Central TimeGMT / CSTGreenwich Mean Time → US Mountain TimeGMT / MSTGreenwich Mean Time → US Pacific TimeGMT / PSTGreenwich Mean Time → US Alaska TimeGMT / AKSTGreenwich Mean Time → Hawaii TimeGMT / HSTGreenwich Mean Time → Canada Atlantic TimeGMT / ASTGreenwich Mean Time → Central European TimeGMT / CETGreenwich Mean Time → Eastern European TimeGMT / EET
Need the exact current time?
Use the live ToolsHub timezone converter to see current times, DST status, and schedule across time zones.