GMT to UTC Converter – Greenwich Mean Time to Coordinated Universal Time
GMT and UTC are at the same UTC offset. GMT (Greenwich Mean Time) is UTC+0, switching to BST (UTC+1) during daylight saving, while UTC (Coordinated Universal Time) is UTC+0 all year. The live clocks below show the current time in both zones, updated every second.
GMT to UTC Conversion Table (Hour by Hour)
Standard-time conversion from Greenwich Mean Time to Coordinated Universal Time. During daylight saving periods the offset shifts by one hour - the live clocks above always show the correct current time.
| GMT (UTC+0) | UTC (UTC+0) |
|---|---|
| 12:00 AM | 12:00 AM |
| 1:00 AM | 1:00 AM |
| 2:00 AM | 2:00 AM |
| 3:00 AM | 3:00 AM |
| 4:00 AM | 4:00 AM |
| 5:00 AM | 5:00 AM |
| 6:00 AM | 6:00 AM |
| 7:00 AM | 7:00 AM |
| 8:00 AM | 8:00 AM |
| 9:00 AM | 9:00 AM |
| 10:00 AM | 10:00 AM |
| 11:00 AM | 11:00 AM |
| 12:00 PM | 12:00 PM |
| 1:00 PM | 1:00 PM |
| 2:00 PM | 2:00 PM |
| 3:00 PM | 3:00 PM |
| 4:00 PM | 4:00 PM |
| 5:00 PM | 5:00 PM |
| 6:00 PM | 6:00 PM |
| 7:00 PM | 7:00 PM |
| 8:00 PM | 8:00 PM |
| 9:00 PM | 9:00 PM |
| 10:00 PM | 10:00 PM |
| 11:00 PM | 11:00 PM |
Frequently Asked Questions
What is the time difference between GMT and UTC?
GMT and UTC are at the same UTC offset. GMT (Greenwich Mean Time) is UTC+0 and UTC (Coordinated Universal Time) is UTC+0.
How do I convert GMT to UTC?
Take your time in GMT and add 0 hours. For example, 9:00 AM GMT is 9:00 AM in UTC. The live clocks at the top of this page always show the current conversion.
Does daylight saving time affect GMT to UTC conversion?
Yes. GMT switches to BST (UTC+1) in summer, so the gap between the two zones changes during DST periods. The live clocks on this page use the IANA timezone database and always reflect the correct current offset automatically.
What is the best time for a meeting between GMT and UTC?
Look for overlap between 9:00 AM-6:00 PM working hours in both zones using the conversion table above. GMT and UTC are at the same UTC offset, so there is normally several hours of business-hours overlap.