Time zone converter
JST to UTC
Convert Japan Time — Tokyo to Coordinated Universal Time — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Tokyo, it's 12:00 AM in UTC. UTC is 9 hours behind Tokyo. Use the converter above to turn any JST time into UTC, or scan the hour-by-hour table below for the full day.
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Japan Time — Tokyo ·
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Coordinated Universal Time ·
Convert a specific timein Tokyo → — in UTC
JST to UTC at a glance
9:00 AM JST
12:00 AM
UTC · UTC
12:00 PM JST
3:00 AM
UTC · UTC
5:00 PM JST
8:00 AM
UTC · UTC
Planning a meeting between Tokyo and UTC
Tokyo and UTC share no standard 9-to-5 overlap, so a live call usually means one side taking an early-morning or late-evening slot. The hourly table below helps you pick the least-inconvenient time for everyone.
Hour-by-hour: Tokyo to UTC
A full day mapped from JST to UTC.
Frequently asked
Is UTC ahead of or behind Tokyo?
UTC is 9 hours behind Tokyo.
What is 12:00 PM JST in UTC?
12:00 PM in Tokyo is 3:00 AM in UTC.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so JST and UTC automatically reflect the correct daylight-saving offset for the current date.