Convert JST to SGT
Compare Japan Standard Time and Singapore Time with a live hour-by-hour converter, meeting planner, and calendar export tools.
How JST Converts
Japan Standard Time is UTC+9 and Singapore Time is UTC+8, so SGT is 1 hour behind JST. The converter updates automatically to show the matching local time across both zones.
Hour-by-Hour Time Table
Use the visual comparison grid and hour-by-hour table to match JST and SGT throughout the day. Export selected times with ICS download or send them to Google Calendar and Gmail.
Schedule Meetings Accurately
Plan calls between Japan and Singapore with automatic timezone handling and up-to-date offset data. Time calculations follow the IANA timezone database, including historical changes and any future rule updates.
How to Convert JST to SGT
Open the JST to SGT converter: Go to https://www.xconvert.com/time-converter/jst-to-sgt-converter. The page opens with JST, Japan Standard Time, and SGT, Singapore Time, already set up in a visual comparison grid, which is useful when you are planning a call with a client in Singapore from Japan or coordinating regional work across East and Southeast Asia.
Add comparison cities if your schedule includes more markets: Click + Add City and search for additional locations that matter to your workflow, such as Tokyo and Singapore for regional operations, or other offices involved in shipping, finance, gaming, electronics, or APAC support coverage. This is especially helpful for companies that run cross-border meetings between Japan headquarters and Singapore commercial, logistics, or data center teams.
Select the meeting window on the grid: Click Select, then drag across the colored timeline to highlight a time range in purple. For example, if you drag around 9:00 JST, the Singapore row shows 8:00 SGT; if you highlight 12:00 JST, it lines up with 11:00 SGT, which makes it easy to confirm whether a late-morning Japan meeting still fits comfortably into Singapore office hours.
Export and share the selected time: After selecting a range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is practical when a Japan-based team wants to send a confirmed meeting block to Singapore colleagues so everyone receives the same slot in their own calendar system without manually rewriting the time.
Understanding the JST to SGT Time Difference
JST is Japan Standard Time and SGT is Singapore Time. JST is UTC+9, SGT is UTC+8, and SGT is 1 hour behind JST, which also means JST is 1 hour ahead of SGT.
That one-hour gap is consistent and simple to apply in daily scheduling. When it is 9:00 JST, it is 8:00 SGT; 12:00 JST = 11:00 SGT; 15:00 JST = 14:00 SGT; and 18:00 JST = 17:00 SGT. These examples cover the most common business periods, from morning check-ins to late-afternoon handoffs.
The time difference does not change during the year because JST does not observe DST and SGT does not observe DST. As a result, there are no months when the JST-SGT difference changes; the gap remains 1 hour year-round, which is useful for recurring meetings, weekly status calls, and regional support rotations.
JST is used in Japan, while SGT is used in Singapore. For teams working across these two countries, the stable offset reduces calendar confusion and makes it easier to maintain standing meetings for sectors such as manufacturing, semiconductors, shipping, finance, cloud infrastructure, and regional sales.
Best Times for Calls and Meetings Between JST and SGT
Because SGT is only 1 hour behind JST, Japan and Singapore have a strong overlap for normal business communication. A meeting scheduled during the middle of the day in Japan usually still lands comfortably within the same workday in Singapore, which is ideal for project reviews, procurement calls, customer demos, and regional management updates.
A practical meeting block is the late morning to late afternoon period in Japan. For instance, 9:00 JST = 8:00 SGT works for early starts, 12:00 JST = 11:00 SGT is a convenient late-morning Singapore slot, 15:00 JST = 14:00 SGT fits standard afternoon meetings in both locations, and 18:00 JST = 17:00 SGT can still work for end-of-day coordination before Singapore teams sign off.
This narrow gap is particularly useful for companies that split responsibilities between Japan and Singapore. A Tokyo-based product or engineering team can hand off updates to a Singapore commercial or operations team with minimal delay, and regional leadership can schedule one recurring weekly call without needing seasonal adjustments.
If you want the least friction for recurring meetings, midday JST often provides the cleanest overlap. Using the examples above, a 12:00 JST / 11:00 SGT or 15:00 JST / 14:00 SGT slot is often easier than very early or very late meetings because both teams are already in the core part of the workday.
Frequently Asked Questions
What is the time difference between JST and SGT?
The time difference between JST and SGT is 1 hour. JST is 1 hour ahead of SGT, so when a team in Japan starts a meeting, colleagues in Singapore join one hour earlier by the clock.
This is a stable difference throughout the year. Since neither time zone uses daylight saving time, the gap does not shift seasonally and recurring meetings remain predictable.
When is 9 AM JST in SGT?
9:00 JST = 8:00 SGT. This is a common conversion for morning standups, logistics updates, and early coordination between Japan and Singapore teams.
Because the difference is only one hour, morning scheduling is straightforward. If a Tokyo office wants a 9 AM start, the Singapore side only needs to join at 8 AM, which can work for teams that begin early.
When is 12 PM JST in SGT?
12:00 JST = 11:00 SGT. This is one of the easiest meeting times for both sides because it falls near midday in Japan and late morning in Singapore.
For cross-border business, this slot is practical for sales reviews, supplier calls, and regional planning meetings. It avoids very early starts and still leaves most of the day open for follow-up work.
When is 3 PM JST in SGT?
15:00 JST = 14:00 SGT. This is a strong afternoon overlap that suits project syncs, executive check-ins, and operational handoffs.
Many teams prefer this range because both offices are fully into the workday. It gives enough time earlier in the day to prepare materials and enough time afterward to act on decisions.
When is 6 PM JST in SGT?
18:00 JST = 17:00 SGT. This can work well for end-of-day coordination, especially when a Japan-based team needs to wrap up items with Singapore before both offices close.
It is also useful for deadline-day communication. Japan can finish a late-afternoon review while Singapore still has part of the business day left to respond or execute next steps.
Does the time difference between JST and SGT change during DST?
No, the difference does not change during DST. JST does not observe DST and SGT does not observe DST, so the time gap stays at 1 hour all year.
That consistency is valuable for recurring calendar events. A weekly meeting between Japan and Singapore can stay at the same local times every month without seasonal rescheduling.
What is the best meeting time between JST and SGT?
The best meeting times are usually in the shared daytime window, especially around the examples shown on the converter. 12:00 JST = 11:00 SGT and 15:00 JST = 14:00 SGT are particularly convenient because both sides are in standard working hours.
A 9:00 JST = 8:00 SGT meeting can also work for teams that start early, while 18:00 JST = 17:00 SGT is useful for late-day coordination. The best choice depends on whether the meeting is a quick status update, a client call, or a longer planning session.
Is JST ahead of SGT or behind it?
JST is ahead of SGT. More specifically, JST is 1 hour ahead of SGT, while SGT is 1 hour behind JST.
This means when you schedule from Japan to Singapore, you subtract one hour to get the Singapore time. The converter’s side-by-side grid makes that relationship easy to see for meetings, travel coordination, and regional operations planning.