BRT to BST Converter
Start by searching for a time zone, city, or town.
Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
9:00 am09:00 BRT (UTC-3), Oct 13, 2026 = 1:00 pm13:00 BST (UTC+1), Oct 13, 2026
BRT is 4 hours behind BST.
BRT and BST examples
These examples always use BRT (UTC-3) and BST (UTC+1). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
BRT is 4 hours behind BST.
How the time difference changes
For most of the year, BRT is 4 hours behind BST. From Oct 25, 2026 to Mar 28, 2027, BRT is 3 hours behind GMT.
For most of the year, working hours of 9:00 am to 5:00 pm in BRT correspond to 1:00 pm to 9:00 pm in BST. At other times of the year, working hours of 9:00 am to 5:00 pm in BRT correspond to 12:00 pm to 8:00 pm in GMT.For most of the year, working hours of 09:00 to 17:00 in BRT correspond to 13:00 to 21:00 in BST. At other times of the year, working hours of 09:00 to 17:00 in BRT correspond to 12:00 to 20:00 in GMT.
Compare BRT time with BST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Brasília time is 4 hours behind British Summer Time.
9:00 am09:00 in BRT is 1:00 pm13:00 in BST
BRT to BST call time
Best time for a conference call or a meeting is between 9am-1pm09:00-13:00 in BRT which corresponds to 1pm-5pm13:00-17:00 in BST
9:00 am09:00 Brasília time (BRT). Offset UTC -3:00 hours
1:00 pm13:00 British Summer Time (BST). Offset UTC +1:00 hour
9:00 am09:00 BRT / 1:00 pm13:00 BST
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
| BRT | BST |
|---|---|
| 4:00am | |
| 5:00am | |
| 6:00am | |
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| 7:00pm | |
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| 9:00pm | |
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Brasília time
Offset: BRT is 3 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Brazil
Principal Cities: The largest city in the BRT time zone is Fortaleza in Brazil, with about 2.4 million people. Other major cities in this time zone include São Luís, Natal, Teresina, João Pessoa.
Daylight Saving: Clocks in Brasília time (BRT) do not change for daylight saving time, so BRT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
BRT representations, usage and related time zones
- -03 - basic short
- -0300 - basic
- -03:00 - extended
- -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the west of the zero meridian.
- Papa - Military abbreviation for BRT
- P - short form of 'Papa'
- ADT - Atlantic Daylight Time
- PMT - Pierre & Miquelon Standard Time
- PMST - Pierre & Miquelon Standard Time
- AMST - Amazon Summer Time
- ART - Argentina Time
- BRT - Brasília time
- CLST - Chile Summer Time
- FKST - Falkland Islands Summer Time
- GFT - French Guiana Time
- P - Papa Time Zone
- PYST - Paraguay Summer Time
- SRT - Suriname Time
- UYT - Uruguay Time
British Summer Time
Offset: BST is 1 hour ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Britain (UK), Guernsey, Isle of Man, Jersey
Principal Cities: The largest city in the BST time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Birmingham, Glasgow, Manchester, Sheffield.
Today all shaded areas are on BST.
Daylight Saving: British Summer Time (BST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Greenwich Mean Time (GMT).
Start: British Summer Time (BST) started on Sunday, March 29, 2026 at 1:00 am01:00 local time and clocks were set one hour forward to Sunday, March 29, 2026, 2:00 am02:00. Daylight saving starts annually on the last Sunday of March.
End: British Summer Time (BST) ends on Sunday, October 25, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.
BST representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates an offset of one hour to the east of the zero meridian.
- Alpha - Military abbreviation for BST
- A - short form of 'Alpha'
- Europe/Belfast
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- British Summer Time - UTC +1
- Bangladesh Standard Time - UTC +6
- Bougainville Standard Time - UTC +11
- BST - British Summer Time
- CET - Central European Time
- IST - Irish Standard Time
- WEST - Western European Summer Time
- A - Alpha Time Zone
- CET - Central European Time
- MEZ - Mitteleuropäische Zeit
- WAT - West Africa Time
- WST - Western Sahara Summer Time
- BMT - Biel Mean Time