UTC to JST Converter – Convert UTC to Japan Time

JST is 9 hours ahead of UTC, so to convert mentally, add 9 hours to your UTC time. For example: 9:00 AM UTC = 6:00 PM JST.

JST (Japan Standard Time, UTC+9) is 9 hours ahead of UTC (Coordinated Universal Time, UTC+0) during standard time. For example, 9:00 AM UTC = 6:00 PM JST.

JST is 9 hours ahead of UTC, so standard 9–5 business hours do not overlap. The most practical meeting window is early morning in UTC (7–9 AM), which falls in the evening in JST — for example, 7:00 AM UTC = 4:00 PM JST. Use our meeting planner to find the exact time for your date, especially around DST transitions.

Global does not observe Daylight Saving Time. UTC remains constant year-round, which simplifies conversions.

Major cities in the UTC (Coordinated Universal Time, UTC+0) timezone include: UTC has no geographic location — it is the universal time reference used by aviation, the internet, meteorology, and global finance worldwide. UTC is a fixed-offset zone — these cities do not observe Daylight Saving Time.

Major cities in the JST (Japan Standard Time, UTC+9) timezone include: Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Fukuoka. JST is a fixed-offset zone — these cities do not observe Daylight Saving Time.

JST is 9 hours ahead of UTC. Because UTC and JST are 9 hours apart, there is no standard business-hour overlap — plan for one side to take an early morning or late evening call. Always include both local times in calendar invites (for example, "2:00 PM UTC / 11:00 PM JST JST"). Double-check around March and November (or March/October for European zones) when DST transitions can shift the offset by 1 hour. For full scheduling guidance, see our international meeting times guide.