Rio de Janeiro×San Diego
When the world meets at work.
Read the day in both zones.
If it's this in Rio de Janeiro, it's that in San Diego.
When it's 8:00 am in Rio de Janeiro, it's 4:00 am in San Diego — late night there, the same day.
When it's 10:00 am in Rio de Janeiro, it's 6:00 am in San Diego — morning there, the same day.
When it's 12:00 pm in Rio de Janeiro, it's 8:00 am in San Diego — morning there, the same day.
When it's 3:00 pm in Rio de Janeiro, it's 11:00 am in San Diego — late morning there, the same day.
When it's 5:00 pm in Rio de Janeiro, it's 1:00 pm in San Diego — midday there, the same day.
When it's 9:00 pm in Rio de Janeiro, it's 5:00 pm in San Diego — afternoon there, the same day.
Crossing the border. Money, language, plugs.
Money changes hands at the border: Rio de Janeiro uses the BRL (R$) and San Diego uses the USD ($). Language shifts too — Portuguese in Rio de Janeiro, English in San Diego. Cars drive on the right in both, so rentals feel familiar.
- Country
- Brazil
- Capital
- Brasília
- Currency
- Brazilian real (BRL · R$)
- Language
- Portuguese
- Calling code
- +55
- Drives on
- Right
- Country
- United States
- Capital
- Washington, D.C.
- Currency
- United States dollar (USD · $)
- Language
- English
- Calling code
- +1
- Drives on
- Right
Quick answers. Before you book the call.
What's the time difference between Rio de Janeiro and San Diego?
Rio de Janeiro is 4 hours behind San Diego. Rio de Janeiro runs on GMT-3 and San Diego on GMT-7. The gap can shift by an hour when either side enters or leaves daylight saving — the live clocks above always reflect the current offset.
When it's 10 am in Rio de Janeiro, what time is it in San Diego?
10:00 am in Rio de Janeiro is 6:00 am in San Diego on the same day — morning there. The same shift applies to any hour; the quick-conversion cards and the 24-hour table above cover the full day.
When it's 3 pm in Rio de Janeiro, what time is it in San Diego?
3:00 pm in Rio de Janeiro is 11:00 am in San Diego on the same day — late morning there. The same shift applies to any hour; the quick-conversion cards and the 24-hour table above cover the full day.
When's the best time to schedule a meeting?
There are 4 hours where both cities are inside a 09:00–17:00 workday. Aim for the middle of that window so neither side is starting or closing out.
Does daylight saving time change the difference?
Yes, if either city observes DST. When one side shifts and the other doesn't, the gap changes by one hour. The DST badges under each clock show whether each zone is currently shifted and when the next transition lands.
How far is Rio de Janeiro from San Diego?
About 9,986 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 12h 15m, not counting airport time, winds, or routing around restricted airspace.
Can I send this meeting time as a calendar invite?
Yes. Pick a time on the slider above, open the meeting card, customize the title and duration, then download the .ics file. It imports cleanly into Google Calendar, Outlook, and Apple Calendar with the correct timezone attached.
What currency do Rio de Janeiro and San Diego use?
Rio de Janeiro uses the Brazilian real (BRL, R$); San Diego uses the United States dollar (USD, $). Check the live rate before transferring money or paying with a card abroad — most banks add a 1–3 % FX margin on top of the mid-market rate.
How do I call Rio de Janeiro from San Diego?
Dial the international prefix used by your carrier (often 011), then +55, then the local number — drop any leading zero of the city or mobile code. For free calls, WhatsApp, Signal, and FaceTime work over Wi-Fi regardless of country code.
What language is spoken in Rio de Janeiro and San Diego?
Rio de Janeiro primarily speaks Portuguese; San Diego speaks English. English is widely used in business contexts in major cities of both, but written contracts may need translation.
Do Rio de Janeiro and San Diego drive on the same side of the road?
Yes — both drive on the right. Rental cars feel identical between the two.