Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

São Paulo to GMT

+3h

São Paulo

BRTSOURCE

Brazil · UTC-03:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

GMT

UTC+01:00☀ DST active

HH03

MM00

15:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

São Paulo

GMT

12:00 AM

4:00 AM

2:00 AM

6:00 AM

4:00 AM

8:00 AM

6:00 AM

10:00 AM

8:00 AM

12:00 PM

10:00 AM

2:00 PM

12:00 PM

4:00 PM

2:00 PM

6:00 PM

4:00 PM

8:00 PM

6:00 PM

10:00 PM

8:00 PM

12:00 AM+1

10:00 PM

2:00 AM+1

Green rows indicate typical business hours (9 AM - 5 PM)

BRT and GMT on the World Map

The map below highlights the BRT (Brasilia Time) and GMT (Greenwich Mean Time) timezone regions across the globe.

BRT Zone

→

GMT Zone

Explore all world timezones interactively →

BRT – Brasilia Time

UTC-03:00

Brasilia Time (BRT) is the time zone for eastern Brazil, 3 hours behind UTC.

Countries in BRT

Brazil (eastern)

Major Cities in BRT

São PauloRio de JaneiroBrasíliaBelo HorizonteSalvadorFortalezaRecifeCuritiba

Key Facts about BRT

•Brazil abolished daylight saving time in 2019.
•São Paulo is the largest city in the Southern Hemisphere.
•BRT is 2 hours ahead of EST.
•Brazil spans four different time zones.
•The B3 stock exchange in São Paulo operates on BRT.

Daylight Saving:No – UTC-03:00 year-round

Learn more about BRT on Wikipedia

GMT – Greenwich Mean Time

UTC+00:00

Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.

Countries in GMT

United KingdomIrelandIcelandPortugal (mainland)GhanaSenegalMaliMauritaniaGambiaGuineaSierra LeoneLiberiaIvory CoastBurkina FasoMorocco (historically)

Major Cities in GMT

LondonDublinLisbonAccraReykjavikEdinburghCasablancaDakarBamakoAbidjanConakryFreetownMonrovia

Key Facts about GMT

•GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
•The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
•GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
•Iceland uses GMT year-round and never observes daylight saving time.
•The UK switches from GMT to BST (British Summer Time) in late March each year.

Daylight Saving:Yes – switches to BST

Learn more about GMT on Wikipedia

About São Paulo

Wikipedia

São Paulo operates on Brasília Time (BRT), UTC-3. As South America's largest financial center, São Paulo's B3 exchange is the Americas' second-largest.

Population:12.4 million

Metro:22.4 million

Business Hours:9:00 AM - 6:00 PM BRT

Currency:BRL (R$)

Stock Exchange:B3 (Brasil Bolsa Balcão)

Key Landmarks

Paulista AvenueIbirapuera ParkSão Paulo CathedralMASPPinacoteca

Did You Know?

The city has more helicopters than any other city in the world due to traffic congestion.

Learn more about BRT timezone →

São Paulo to GMT Time Difference – Complete Guide

São Paulo runs on Brasilia Standard Time (BRT) at UTC-03:00. GMT runs on Greenwich Mean Time (GMT) at UTC+00:00. That puts São Paulo 3 hours ahead of GMT — a difference of +3h at the current offsets.

In practice, when it is 9:00 AM in São Paulo it is 12:00 PM in GMT. Midnight in São Paulo is 3:00 AM in GMT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

São Paulo to GMT time conversion table

São Paulo (BRT)	GMT (GMT)	Day
12:00 AM	3:00 AM	same day
6:00 AM	9:00 AM	same day
7:00 AM	10:00 AM	same day
8:00 AM	11:00 AM	same day
9:00 AM	12:00 PM	same day
12:00 PM	3:00 PM	same day
3:00 PM	6:00 PM	same day
5:00 PM	8:00 PM	same day
6:00 PM	9:00 PM	same day
9:00 PM	12:00 AM	next day

Why people convert São Paulo to GMT time

Scheduling a call from São Paulo to GMT: a 10:00 AM start in São Paulo lands at 1:00 PM in GMT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both São Paulo and GMT are inside the 9-to-5 working day between 9:00 AM and 2:00 PM BRT time (12:00 PM–5:00 PM GMT). That is roughly 5 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in São Paulo is 11:00 PM in GMT makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM BRT" is unambiguous; "3 PM" across a +3h gap is not.
Block 9:00 AM–2:00 PM BRT as the recurring meeting window if you work primarily from São Paulo and need GMT colleagues present.

About BRT (Brasilia Time)

Brasilia Time (BRT) is the standard time in the most populous regions of Brazil, including São Paulo, Rio de Janeiro, and the capital Brasília. Brazil abolished daylight saving time in 2019, so BRT is now observed year-round in these regions. Brazil spans four time zones in total.

About GMT (Greenwich Mean Time)

Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.

Best time to call between São Paulo and GMT

Both São Paulo and GMT sit inside the 9 AM – 5 PM working day between 9:00 AM–2:00 PM BRT, which is 12:00 PM–5:00 PM GMT. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

São Paulo and GMT share 5 hours of working-hours overlap (9:00 AM–2:00 PM BRT), so scheduling a live meeting is straightforward.

São Paulo is 3 hours ahead of GMT (BRT UTC-03:00 → GMT UTC+00:00). The shared working window is 9:00 AM–2:00 PM BRT. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

São Paulo

Does not observe DST

GMT

☀ Currently in DST

Standard: UTC+00:00 · DST: UTC+01:00

Clocks fall back on Sun, Oct 25, 2026

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between São Paulo and GMT?

São Paulo (BRT, UTC-03:00) is 3 hours ahead of GMT (GMT, UTC+00:00). The gap is currently +3h.

How do I convert São Paulo time to GMT time?

Add +3h to São Paulo local time. For example, 9:00 AM in São Paulo is 12:00 PM in GMT.

What time is it in GMT right now?

GMT uses GMT at UTC+00:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +3h offset from São Paulo.

What is the best time to call GMT from São Paulo?

Call between 9:00 AM and 2:00 PM BRT — that maps to 12:00 PM–5:00 PM GMT and keeps both parties inside the working day.

Which is ahead, São Paulo or GMT?

São Paulo is 3 hours ahead of GMT. When it is 12:00 PM in São Paulo it is 3:00 PM in GMT.

Do São Paulo and GMT use different time zones?

São Paulo (Brazil) uses BRT at UTC-03:00, while GMT uses GMT at UTC+00:00. The IANA identifiers are America/Sao_Paulo and Europe/London.

Does daylight saving time affect the São Paulo–GMT difference?

Neither zone observes daylight saving time, so the +3h offset between São Paulo and GMT is fixed all year.

Which other cities share São Paulo's time zone?

BRT also covers São Paulo, Rio de Janeiro, Brasília, Belo Horizonte, Salvador, Fortaleza, Recife, Curitiba.

Which countries use BRT, São Paulo's zone?

BRT is used in Brazil (eastern).

Is there a day difference between São Paulo and GMT?

Not normally. The +3h gap only pushes the date over for late-evening times.

What is the time difference between São Paulo and GMT?

GMT is +3h from São Paulo.

What timezone is São Paulo in?

São Paulo operates on Brasília Time (BRT), UTC-3. As South America's largest financial center, São Paulo's B3 exchange is the Americas' second-largest.

What timezone is GMT in?

GMT operates on its local timezone.

What are the business hours in São Paulo?

Standard business hours in São Paulo are 9:00 AM - 6:00 PM BRT.

Which countries use BRT (Brasilia Time)?

BRT is used in Brazil (eastern).

Does BRT observe daylight saving time?

No, BRT does not observe daylight saving time and remains at UTC-03:00 year-round.

What are some interesting facts about BRT?

Brazil abolished daylight saving time in 2019. São Paulo is the largest city in the Southern Hemisphere.

Which cities are in the GMT timezone?

Major cities in the GMT timezone include London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar.

What is the UTC offset for GMT?

Greenwich Mean Time (GMT) is at UTC+00:00. During daylight saving time, it shifts to BST.

What should I know about the GMT timezone?

GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.