Australia
United States
Sydney to San Francisco Time Difference
San Francisco is 18 hours behind Sydney
Sydney vs San Francisco — At a Glance
Sydney to San Francisco — Hour-by-Hour
About Sydney and San Francisco
Sydney (population: 5.3M) is known for the Opera House, Harbour Bridge, Australia's financial center, and surfing culture. San Francisco (population: 0.87M) is known for Silicon Valley, the Golden Gate Bridge, venture capital, and the global tech industry.
Business Hours Overlap
The 18-hour gap means Sydney and San Francisco have almost no standard-hours overlap. Early morning calls from Sydney or late evening calls from San Francisco are the most practical options.
Calling Between Cities
With 18 hours between Sydney (+61) and San Francisco (+1), finding a mutually convenient calling time is tricky. Consider scheduling calls in advance rather than calling spontaneously.
Currency
Sydney uses AUD while San Francisco uses USD. Check current exchange rates before making payments or transferring funds between the two cities.
Language
Sydney and San Francisco share English as a common language, which simplifies business communication.
Use our world clock tool to compare Sydney and San Francisco visually, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between Sydney and San Francisco?
San Francisco, United States is 18 hours behind Sydney, Australia. Sydney is in the Australia/Sydney timezone (UTC+11) and San Francisco is in the America/Los Angeles timezone (UTC-7).
When it's noon in Sydney, what time is it in San Francisco?
When it's 12:00 PM (noon) in Sydney, it's 6:00 PM in San Francisco.
What is the best time to call San Francisco from Sydney?
The best time to call San Francisco from Sydney is during the overlapping business hours. When it's 9 AM in Sydney, it's 3:00 PM in San Francisco. Aim for late morning to early afternoon in Sydney for the best chance of reaching someone during working hours.
What currency does San Francisco use?
San Francisco, United States uses USD. Sydney uses AUD. You will need to check the current exchange rate for transactions between the two.
What language is spoken in San Francisco?
The primary language in San Francisco is English. Sydney also speaks English, making communication easier.
How do I dial San Francisco from Sydney?
To call San Francisco from Sydney, dial your international access code followed by +1 and the local number. Sydney uses country code +61 and San Francisco uses +1.
