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