What's the current time difference between Tokyo and San Francisco?

Right now, San Francisco (San Francisco) is −16h relative to Tokyo (Tokyo). The number is live and reflects the current daylight-saving status of both zones.

Does this converter account for daylight saving time?

Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.

Why does the TO column sometimes show "+1d" or "−1d"?

When the Tokyo hour lands on a different calendar day in San Francisco, we flag it so you don't accidentally schedule a meeting on the wrong date. Tokyo 11 PM is often the next day in eastern-hemisphere zones, for example.

How do I schedule a meeting that works for both zones?

Look at the row highlighted lume green — that's the longest contiguous block where both Tokyo and San Francisco are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

Tokyo to San Francisco

Tokyo ↔ San Francisco. Right now, San Francisco is −16h relative to Tokyo. DST is honored live.

From

Tokyo

—

San Francisco

—

00:00Tokyo hour of day23:30

Live offset

−16h

Tokyo (Jun 21) ↔ San Francisco (Jun 20)

If Tokyo or San Francisco just shifted for daylight saving, that's already reflected.

Best meeting overlap

No 9-to-5 overlap.

Working hours = 9 AM – 5 PM in each zone.

Hour-by-hour

Tokyo → San Francisco, every hour

Tokyo · Jun 21San Francisco · Jun 20

12:00 AM8:00 AM
1:00 AM9:00 AM
2:00 AM10:00 AM
3:00 AM11:00 AM
4:00 AM12:00 PM
5:00 AM1:00 PM
6:00 AM2:00 PM
7:00 AM3:00 PM
8:00 AM4:00 PM
9:00 AM5:00 PM
10:00 AM6:00 PM
11:00 AM7:00 PM
12:00 PM8:00 PM
1:00 PM9:00 PM
2:00 PM10:00 PM
3:00 PM11:00 PM
4:00 PM+1d12:00 AM
5:00 PM+1d1:00 AM
6:00 PM+1d2:00 AM
7:00 PM+1d3:00 AM
8:00 PM+1d4:00 AM
9:00 PM+1d5:00 AM
10:00 PM+1d6:00 AM
11:00 PM+1d7:00 AM

Both zones in working hours±1d = the TO side lands on a different calendar day

FAQ

Tokyo ↔ San Francisco, questions answered

What's the current time difference between Tokyo and San Francisco?: Right now, San Francisco (San Francisco) is −16h relative to Tokyo (Tokyo). The number is live and reflects the current daylight-saving status of both zones.
Does this converter account for daylight saving time?: Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.
Why does the TO column sometimes show "+1d" or "−1d"?: When the Tokyo hour lands on a different calendar day in San Francisco, we flag it so you don't accidentally schedule a meeting on the wrong date. Tokyo 11 PM is often the next day in eastern-hemisphere zones, for example.
How do I schedule a meeting that works for both zones?: Look at the row highlighted lume green — that's the longest contiguous block where both Tokyo and San Francisco are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

Reverse — San Francisco to Tokyo Time in Tokyo Time in San Francisco Open in planner