BRT to GMT Time Converter

Convert Brasília Time (BRT) to Greenwich Mean Time (GMT). Both time zones are shown live below; current offset between them is 4 hours ahead.

São Paulo · Brasília Time
18:16:43
Tuesday, May 12, 2026
GMT-3 · UTC-03:00
London · Greenwich Mean Time
22:16:43
Tuesday, May 12, 2026
GMT+1 · UTC+01:00

Convert a specific time

From: BRT (São Paulo)
To: GMT (London)
--:--

Daylight Saving status right now

BRT (Brasília Time)
Observes DST
No
GMT (Greenwich Mean Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-10-25
Offset shift
UTC+01:00 → UTC+00:00

Heads up: GMT observes DST while BRT does not. The 4-hour difference shown above will shift by one hour when GMT starts or ends DST.

When can BRT and GMT meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
BRT
GMT
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in São Paulo (BRT). Each row shows the local working-hours state in that zone for the same moment in time.
4 hours of overlap during standard 9am-5pm working hours.
Best meeting window: 09:00–12:00 BRT (13:00–16:00 GMT).

Hour-by-hour BRT to GMT conversion table

BRT time (São Paulo)GMT time (London)Status
00:00 Tue04:00 TueOff-hours both sides
01:00 Tue05:00 TueOff-hours both sides
02:00 Tue06:00 TueOff-hours both sides
03:00 Tue07:00 TueOff-hours both sides
04:00 Tue08:00 TueOff-hours both sides
05:00 Tue09:00 TueGMT working
06:00 Tue10:00 TueGMT working
07:00 Tue11:00 TueGMT working
08:00 Tue12:00 TueGMT working
09:00 Tue13:00 TueBoth at work
10:00 Tue14:00 TueBoth at work
11:00 Tue15:00 TueBoth at work
12:00 Tue16:00 TueBoth at work
13:00 Tue17:00 TueBRT working
14:00 Tue18:00 TueBRT working
15:00 Tue19:00 TueBRT working
16:00 Tue20:00 TueBRT working
17:00 Tue21:00 TueOff-hours both sides
18:00 Tue22:00 TueOff-hours both sides
19:00 Tue23:00 TueOff-hours both sides
20:00 Tue00:00 WedOff-hours both sides
21:00 Tue01:00 WedOff-hours both sides
22:00 Tue02:00 WedOff-hours both sides
23:00 Tue03:00 WedOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Brasília Time (BRT)
IANA identifier
America/Sao_Paulo
Current UTC offset
UTC-03:00
Current abbreviation
GMT-3
Major cities in this zone
São PauloRio de JaneiroBrasília
Greenwich Mean Time (GMT)
IANA identifier
Europe/London
Current UTC offset
UTC+01:00
Current abbreviation
GMT+1
Major cities in this zone
LondonManchesterEdinburghBirmingham

Sun today in São Paulo and London

São Paulo
Sunrise
06:33
Sunset
17:35
Solar noon
12:04
Daylight
11h 2m
London
Sunrise
05:14
Sunset
20:41
Solar noon
12:58
Daylight
15h 26m

Related converters

GMT to BRT (reverse)BRT to ESTBRT to PSTBRT to UTCBRT to CETBRT to ISTEST to GMTPST to GMTUTC to GMTCET to GMTIST to GMT
Looking for local time? See time in São Paulo or time in London.

Frequently asked questions

What is the time difference between BRT and GMT right now?+
GMT (Greenwich Mean Time) is currently 4 hours ahead BRT (Brasília Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does BRT or GMT observe daylight saving time?+
BRT: does not observe daylight saving time. GMT: observes daylight saving time.
When is the best time to schedule a meeting between BRT and GMT?+
The strongest overlap is 09:00–12:00 BRT (13:00–16:00 GMT), giving 4 hours when both sides are within standard 9am-5pm working hours.
What time is it in London when it is 12:00 noon in São Paulo?+
When it is 12:00 Tue in São Paulo (BRT), it is 16:00 Tue in London (GMT).
Which IANA time zone identifiers are used for BRT and GMT?+
BRT maps to "America/Sao_Paulo" in the IANA database. GMT maps to "Europe/London". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is São Paulo ahead of or behind London?+
Whether São Paulo (BRT) is ahead of or behind London (GMT) depends on the current UTC offsets. Right now GMT is 4 hours ahead BRT. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for BRT and GMT?+
BRT is UTC-03:00 (GMT-3) and GMT is UTC+01:00 (GMT+1). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both BRT and GMT?+
Yes. There are 4 hours of overlap during standard 9am-5pm working hours, with the strongest window at 09:00–12:00 BRT.