United States
Japan
San Francisco to Tokyo Time Difference
Tokyo is 16 hours ahead of San Francisco
San Francisco vs Tokyo — At a Glance
San Francisco to Tokyo — Hour-by-Hour
About San Francisco and Tokyo
San Francisco (population: 0.87M) is known for Silicon Valley, the Golden Gate Bridge, venture capital, and the global tech industry. Tokyo (population: 13.9M) is known for the world's largest metropolitan economy, Shibuya Crossing, anime culture, and Toyota.
Business Hours Overlap
The 16-hour gap means San Francisco and Tokyo have almost no standard-hours overlap. Early morning calls from San Francisco or late evening calls from Tokyo are the most practical options.
Calling Between Cities
With 16 hours between San Francisco (+1) and Tokyo (+81), finding a mutually convenient calling time is tricky. Consider scheduling calls in advance rather than calling spontaneously.
Currency
San Francisco uses USD while Tokyo uses JPY. Check current exchange rates before making payments or transferring funds between the two cities.
Language
San Francisco primarily speaks English, while Tokyo speaks Japanese. For business communication, English is commonly used as a bridge language in international settings.
Use our world clock tool to compare San Francisco and Tokyo visually, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between San Francisco and Tokyo?
Tokyo, Japan is 16 hours ahead of San Francisco, United States. San Francisco is in the America/Los Angeles timezone (UTC-7) and Tokyo is in the Asia/Tokyo timezone (UTC+9).
When it's noon in San Francisco, what time is it in Tokyo?
When it's 12:00 PM (noon) in San Francisco, it's 4:00 AM in Tokyo.
What is the best time to call Tokyo from San Francisco?
The best time to call Tokyo from San Francisco is during the overlapping business hours. When it's 9 AM in San Francisco, it's 1:00 AM in Tokyo. Aim for late morning to early afternoon in San Francisco for the best chance of reaching someone during working hours.
What currency does Tokyo use?
Tokyo, Japan uses JPY. San Francisco uses USD. You will need to check the current exchange rate for transactions between the two.
What language is spoken in Tokyo?
The primary language in Tokyo is Japanese. English is widely used for international business communication.
How do I dial Tokyo from San Francisco?
To call Tokyo from San Francisco, dial your international access code followed by +81 and the local number. San Francisco uses country code +1 and Tokyo uses +81.
