Boston to Rio de Janeiro time converter

Rio de Janeiro is 1 hour ahead of Boston. When it is 9:00 AM in Boston, it is 10:00 AM in Rio de Janeiro.

Boston EDT

Tuesday, October 20, 2026

Rio de Janeiro BRT

Tuesday, October 20, 2026

Boston
Massachusetts, United States
Tue, Oct 20
EDTUTC-4
Rio de Janeiro
Brazil
Tue, Oct 20
BRTUTC-3+1h
Finding your time zone…
Shared working hours (9:00–18:00)

Boston to Rio de Janeiro conversion table

Every hour of today in Boston and the matching time in Rio de Janeiro. Light rows are typical working hours (9:00–18:00).

BostonRio de Janeiro
12:00 AM1:00 AM
1:00 AM2:00 AM
2:00 AM3:00 AM
3:00 AM4:00 AM
4:00 AM5:00 AM
5:00 AM6:00 AM
6:00 AM7:00 AM
7:00 AM8:00 AM
8:00 AM9:00 AM
9:00 AM10:00 AM
10:00 AM11:00 AM
11:00 AM12:00 PM
12:00 PM1:00 PM
1:00 PM2:00 PM
2:00 PM3:00 PM
3:00 PM4:00 PM
4:00 PM5:00 PM
5:00 PM6:00 PM
6:00 PM7:00 PM
7:00 PM8:00 PM
8:00 PM9:00 PM
9:00 PM10:00 PM
10:00 PM11:00 PM
11:00 PM12:00 AM+1 day

Best time to call or meet

Both sides are at work from 9:00 AM – 5:00 PM in Boston (10:00 AM – 6:00 PM in Rio de Janeiro).

Daylight saving time and the difference

The difference changes during the year because Boston and Rio de Janeiro switch clocks on different dates:

  • Oct 20, 2026 – Nov 1, 2026: +1h
  • Nov 1, 2026 – Mar 14, 2027: +2h
  • Mar 14, 2027 – Oct 20, 2027: +1h

Distance

Boston and Rio de Janeiro are 7,801 km (4,847 miles) apart in a straight line.

More conversions

Rio de Janeiro to BostonBoston to New YorkBoston to LondonBoston to Los AngelesBoston to ChicagoBoston to TorontoBoston to São PauloBoston to ParisBoston to BerlinBoston to MoscowBoston to DubaiBoston to New DelhiBoston to Bangkok
New York to Rio de JaneiroLondon to Rio de JaneiroLos Angeles to Rio de JaneiroChicago to Rio de JaneiroToronto to Rio de JaneiroSão Paulo to Rio de JaneiroParis to Rio de JaneiroBerlin to Rio de JaneiroMoscow to Rio de JaneiroDubai to Rio de JaneiroNew Delhi to Rio de JaneiroBangkok to Rio de Janeiro

Questions and answers

What is the time difference between Boston and Rio de Janeiro?

Rio de Janeiro is 1 hour ahead of Boston.

What time is it in Rio de Janeiro when it is 9 AM in Boston?

When it is 9:00 AM in Boston, it is 10:00 AM in Rio de Janeiro.

When is the best time to call Rio de Janeiro from Boston?

Both sides are at work from 9:00 AM – 5:00 PM in Boston (10:00 AM – 6:00 PM in Rio de Janeiro).

Does the time difference between Boston and Rio de Janeiro change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.