Time difference between São Paulo and Boston

Boston is 1 hour behind São Paulo.

Brazil · Brasilia Standard Time

4:46 AM

Wednesday, October 21, 2026

United States · Eastern Daylight Time

3:46 AM

Wednesday, October 21, 2026

São Paulo to Boston time converter

Green rows are office hours in both places; light green rows are when both are awake.

What is the time difference between São Paulo and Boston?

Boston is 1 hour behind São Paulo. São Paulo is on UTC−3 and Boston is on UTC−4.

What time is it in Boston when it is 9 AM in São Paulo?

When it is 9:00 AM in São Paulo, it is 8:00 AM in Boston.

When is the best time to call Boston from São Paulo?

The best time to call or meet is 10:00 AM–6:00 PM in São Paulo (9:00 AM–5:00 PM in Boston), when both places are in normal office hours.

Does the time difference between São Paulo and Boston change?

Yes. Because of daylight saving time, the difference changes on Sunday, November 1, 2026, when Boston will be 2 hours behind São Paulo.

São Paulo is 1 hour ahead of Boston. More: time in São Paulo · time in Boston