St. Louis to Tokyo Time Difference

Tokyo is 14 hours ahead of St. Louis. Standard 9 AM–5 PM business hours in St. Louis and Tokyo do not overlap, so a live call needs one side outside normal hours. Clocks change on November 1, 2026, which briefly shifts the gap between St. Louis and Tokyo — the converter on this page always reflects the correct offset for the date you pick.

• When it's 9:00 AM in St. Louis, it's 11:00 PM in Tokyo.
• When it's 9:00 AM in Tokyo, it's 7:00 PM the previous day in St. Louis.

Tokyo is currently 14 hours ahead of St. Louis.

Standard 9 AM – 5 PM hours in St. Louis and Tokyo do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in St. Louis, or a 6–8 PM meeting in Tokyo.

On November 1, 2026, St. Louis shifts for daylight saving. After that, Tokyo will be 15 hours ahead of St. Louis (currently 14 hours ahead of St. Louis). The converter and the tables above always reflect the correct offset for the date you pick.

• St. Louis is currently observing daylight saving time.
• Tokyo does not observe daylight saving time.

Frequently asked questions

Is Tokyo ahead of or behind St. Louis?

Tokyo is 14 hours ahead of St. Louis.

How many hours ahead of St. Louis is Tokyo?

Tokyo is 14 hours ahead of St. Louis.

What time is 9 AM in St. Louis in Tokyo?

9:00 AM in St. Louis is 11:00 PM in Tokyo.

What time is noon in St. Louis in Tokyo?

12:00 PM in St. Louis is 2:00 AM the next day in Tokyo.

What time is 5 PM in St. Louis in Tokyo?

5:00 PM in St. Louis is 7:00 AM the next day in Tokyo. Useful for end-of-day handoffs between the two offices.

What time is 3 PM in St. Louis in Tokyo?

3:00 PM in St. Louis is 5:00 AM the next day in Tokyo.

Is St. Louis currently observing daylight saving time?

St. Louis is currently observing daylight saving time (summer time).

Is Tokyo currently observing daylight saving time?

Tokyo does not observe daylight saving time — its UTC offset stays the same all year.

Do St. Louis and Tokyo observe daylight saving?

On November 1, 2026, St. Louis shifts for daylight saving. After that, Tokyo will be 15 hours ahead of St. Louis (currently 14 hours ahead of St. Louis). The converter and the tables above always reflect the correct offset for the date you pick.

When is the best time to call Tokyo from St. Louis?

St. Louis and Tokyo business hours don't overlap. The closest options are early mornings in St. Louis or late evenings, when one side stretches outside 9–5.

When is the best time to call St. Louis from Tokyo?

Tokyo and St. Louis business hours don't overlap. The closest options are early mornings in Tokyo or late evenings, when one side stretches outside 9–5.

St. Louis (CDT) to Tokyo (JST) — how do I convert quickly?

Add 14 hours to St. Louis local time to get Tokyo local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.

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