Brasília Time to Greenwich Mean Time
Convert times between Brasília Time (BRT, UTC-3:00) and Greenwich Mean Time (GMT, UTC+0:00). Greenwich Mean Time is 3 hours ahead of Brasília Time in standard time. During daylight saving time this difference changes to 4 hours.
UTC-3:00→UTC+0:00 / +1:00
Live timezone converterUTC Offset Reference
| Timezone | Abbreviation | Standard offset | DST offset | Country |
|---|---|---|---|---|
| Brasília Time | BRT | UTC-3:00 | — | Brazil |
| 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 (BRT → GMT)
| Brasília Time | Greenwich Mean Time |
|---|---|
| 12:00 AM BRT | 3:00 AM GMT |
| 6:00 AM BRT | 9:00 AM GMT |
| 9:00 AM BRT | 12:00 PM GMT |
| 12:00 PM BRT | 3:00 PM GMT |
| 3:00 PM BRT | 6:00 PM GMT |
| 6:00 PM BRT | 9:00 PM GMT |
| 9:00 PM BRT | 12:00 AM (next day) GMT |
Summer (DST) Conversion (BRT → BST)
| Brasília Time (summer) | Greenwich Mean Time (summer) |
|---|---|
| 12:00 AM BRT | 4:00 AM BST |
| 6:00 AM BRT | 10:00 AM BST |
| 9:00 AM BRT | 1:00 PM BST |
| 12:00 PM BRT | 4:00 PM BST |
| 3:00 PM BRT | 7:00 PM BST |
| 6:00 PM BRT | 10:00 PM BST |
| 9:00 PM BRT | 1:00 AM (next day) BST |
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.
- The offset difference shifts between 3h (standard) and 4h (DST season). Always verify the current offset using the live converter below.
Frequently Asked Questions
How do I convert BRT to GMT?
Add 3 hours to the BRT time to get GMT. For example, 9:00 AM BRT = 12:00 PM GMT.
What is the current UTC offset for Brasília Time?
Brasília Time is always UTC-3:00 (BRT) — it does not observe DST.
Is Greenwich Mean Time ahead or behind Brasília Time?
Greenwich Mean Time is 3 hours ahead of Brasília Time in standard time.
When is a good time to schedule a meeting between BRT and GMT?
A good overlap window is around 9:00 AM BRT / 12:00 PM GMT, which falls within business hours for both timezones.
Related Timezone Conversions
Brasília Time → Argentina TimeBRT / ARTBrasília Time → Colombia TimeBRT / COTBrasília Time → Central European TimeBRT / CETBrasília Time → Eastern European TimeBRT / EETBrasília Time → Moscow TimeBRT / MSKBrasília Time → Turkey TimeBRT / TRTBrasília Time → US Eastern TimeBRT / ESTBrasília Time → India Standard TimeBRT / IST
Need the exact current time?
Use the live ToolsHub timezone converter to see current times, DST status, and schedule across time zones.