Brasilia Time (brt) is used in Brazil. The IANA timezone identifier is America/Sao_Paulo.

India Standard Time (ist) is used in India. The IANA timezone identifier is Asia/Kolkata.

BRT to IST Time Converter

Brasilia Time → India Standard Time

BRT = UTC-3IST = UTC+5:30

⚠️ IST is ambiguous — on this page it means India Standard Time. It also refers to:

BRT → Ireland Standard Time (Dublin) ↗BRT → Israel Standard Time (Jerusalem) ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

IST (Mumbai)

India · +8.5h

17:30

London

United Kingdom · +4h

13:00

New York

USA · -1h

08:00

Tokyo

Japan · +12h

21:00

Dubai

United Arab Emirates · +7h

16:00

BRT (São Paulo) ↔ IST (Mumbai) — time offset

BRT (São Paulo) is 9 hours 30 minutes behind IST (Mumbai). When BRT (São Paulo) clocks hit noon, IST (Mumbai) reads 20:00.

BRT (São Paulo) is in the America/Sao_Paulo timezone. IST (Mumbai) is in Asia/Kolkata. The difference is 8.5 hours 30 minutes.

Mutual working hours

BRT (São Paulo) and IST (Mumbai) have no shared working hours under a standard 9:00–17:00 schedule. One side will always need to join at an off-hour.

When to schedule across time zones

Since BRT (São Paulo) and IST (Mumbai) don't share working hours, these are the most practical options available.

08:00 São Paulo / 16:00 Mumbai⚡ One side off-hours

⚠️ 1h before working hours in São Paulo

09:00 São Paulo / 17:00 Mumbai⚡ One side off-hours

⚠️ 1h after working hours in Mumbai

07:00 São Paulo / 15:00 Mumbai⚡ One side off-hours

⚠️ 2h before working hours in São Paulo

Based on standard 09:00–17:00 working hours in each location's local time.

Holiday calendar for both locations

BRT (São Paulo)7 holidays

Jul 9Constitutionalist Revolution of 1932

Sep 7Independence Day

Oct 12Our Lady of Aparecida

Nov 2All Souls' Day

Nov 15Republic Proclamation Day

IST (Mumbai)

No upcoming public holidays this year.

Working across BRT (São Paulo) and IST (Mumbai)

BRT (São Paulo) (Brazil) and IST (Mumbai) (India) are 8.5 hours apart — far enough that standard 9–5 schedules do not overlap. Any real-time meeting means someone is joining outside their normal hours.

💡 Best practice for cross-timezone meetings

⚡

When BRT (São Paulo) is at 08:00, IST (Mumbai) reads 16:00 — 1h before working hours in São Paulo.

⚡

When BRT (São Paulo) is at 09:00, IST (Mumbai) reads 17:00 — 1h after working hours in Mumbai.

⚡

When BRT (São Paulo) is at 07:00, IST (Mumbai) reads 15:00 — 2h before working hours in São Paulo.

Since there is no natural overlap, the options above represent the most balanced compromise, minimizing out-of-hours inconvenience for both sides.

DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.

Get the Extension — Free →

Use the time slider above to find the exact equivalent time for any moment in BRT (São Paulo). The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.

BRT (São Paulo) ↔ IST (Mumbai)

No overlap — one side will join outside working hours

BRT (São Paulo)

IST (Mumbai)

00:00

08:30

01:00

09:30Working

02:00

10:30Working

03:00

11:30Working

04:00

12:30Working

05:00

13:30Working

06:00

14:30Working

07:00

15:30Working

08:00

16:30Working

09:00Working

17:30off

10:00Working

18:30off

11:00Working

19:30off

12:00Working

20:30off

13:00Working

21:30off

14:00Working

22:30off

15:00Working

23:30off

16:00Working

00:30+1doff

17:00

01:30+1d

18:00

02:30+1d

19:00

03:30+1d

20:00

04:30+1d

21:00

05:30+1d

22:00

06:30+1d

23:00

07:30+1d

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between brt and ist?

Brasilia Time (brt) is UTC-3 and India Standard Time (ist) is UTC+5:30. The difference between them is 8.5 hours.

Where is brt used?

Brasilia Time (brt) is used in Brazil and surrounding regions. The IANA timezone identifier is America/Sao_Paulo.

Where is ist used?

India Standard Time (ist) is used in India and surrounding regions. The IANA timezone identifier is Asia/Kolkata. Note: ist is ambiguous and may refer to other timezones.

How do I convert brt to ist?

Use the interactive converter above. Drag the time slider to any brt time and the ist equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular BRT conversions

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Popular IST conversions

London → IST New York → IST Tokyo → IST Dubai → IST Sydney → IST Paris → IST Berlin → IST Singapore → IST Los Angeles → IST Toronto → IST