Time difference between Boston and São Paulo

São Paulo is 1 hour ahead of Boston.

United States · Eastern Daylight Time

3:46 AM

Wednesday, October 21, 2026

Brazil · Brasilia Standard Time

4:46 AM

Wednesday, October 21, 2026

Boston to São Paulo time converter

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

What is the time difference between Boston and São Paulo?

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

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

When it is 9:00 AM in Boston, it is 10:00 AM in São Paulo.

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

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

Does the time difference between Boston and São Paulo change?

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

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