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