Convert JST to SGT
Compare Japan Standard Time and Singapore Time with a live converter, hourly table, and tools to plan meetings across the 1-hour difference.
JST to SGT Conversion
Convert Japan Standard Time (UTC+9) to Singapore Time (UTC+8) with the current 1-hour difference applied automatically. Both time zones do not observe DST, so conversions stay consistent year-round.
Hour-by-Hour Time Table
Use the visual grid and hour-by-hour table to compare JST and SGT side by side across the day. Export selected times with ICS download or send them to Google Calendar and Gmail.
Schedule Meetings Across Time
Find suitable meeting times between Japan and Singapore using side-by-side business-hour comparisons. Time calculations update automatically using the IANA timezone database for reliable accuracy.
How to Convert JST to SGT
Open the JST to SGT converter: Go to https://www.xconvert.com/time-converter/jst-to-sgt-converter to load a visual comparison grid with JST and SGT already set up for side-by-side viewing. This is useful when you are scheduling a call between Japan and Singapore for regional sales, logistics coordination, gaming operations, or an APAC team meeting where a one-hour shift can affect attendance.
Add comparison cities if your meeting includes more locations: Click + Add City and search for cities such as Tokyo, Singapore, or another office your team works with in Asia-Pacific. This helps if you are coordinating a product launch, supply chain update, or client presentation involving Japan-based teams and Singapore regional headquarters, where both markets often work closely in finance, shipping, technology, and multinational operations.
Select the meeting window on the grid: Click Select to enter selection mode, then drag across the colored timeline on the JST row to highlight a time range in purple. For example, if you drag from 9:00 JST to 12:00 JST, the grid shows 8:00 SGT to 11:00 SGT, and if you drag 15:00 JST to 18:00 JST, it shows 14:00 SGT to 17:00 SGT, making it easy to confirm whether a morning update in Japan still fits comfortably into Singapore business 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 especially practical for sending a confirmed APAC meeting slot to cross-border teams so everyone sees the event in their own local calendar without manually rechecking JST and SGT.
Understanding the JST to SGT Time Difference
JST is Japan Standard Time, UTC+9, while SGT is Singapore Time, UTC+8. SGT is 1 hour behind JST, so when it is 9:00 JST, it is 8:00 SGT, and when it is 12:00 JST, it is 11:00 SGT.
This difference stays consistent throughout the year because JST does not observe DST and SGT does not observe DST. That means there are no months when the JST to SGT difference changes, which is helpful for recurring meetings, weekly reporting cycles, and regular handoffs between teams in Japan and Singapore.
In practical terms, the one-hour gap is small enough that standard office-hour collaboration is usually straightforward. For example, 15:00 JST = 14:00 SGT and 18:00 JST = 17:00 SGT, so late afternoon work in Japan still lines up with late afternoon work in Singapore without the seasonal disruptions that affect many Europe or North America schedules.
Best Times for Calls and Meetings Between JST and SGT
Because Singapore is only 1 hour behind Japan, JST and SGT have a broad overlap during the normal workday. A meeting scheduled for 9:00 JST starts at 8:00 SGT, which can work for early planning calls, operations check-ins, or market-opening coordination when teams want to connect near the start of the business day.
Midday meetings are often the easiest option for both sides. For example, 12:00 JST = 11:00 SGT, which fits naturally into late morning in Singapore and lunchtime in Japan, making it a practical slot for account reviews, procurement updates, or regional management discussions.
Afternoon scheduling also remains convenient across both time zones. 15:00 JST = 14:00 SGT and 18:00 JST = 17:00 SGT, so Japan-based teams can hold afternoon sessions while Singapore participants still remain inside standard office hours. This is particularly useful for cross-border work involving Japanese headquarters, Singapore regional offices, and APAC support teams that need predictable meeting times year-round.
If you want to avoid very early starts in Singapore, a JST meeting time from 12:00 to 18:00 maps to 11:00 to 17:00 SGT, which is one of the most comfortable overlap windows shown by the examples. That range is well suited for recurring status calls, customer demos, and internal reviews where both sides need full business-hour availability.
Frequently Asked Questions
What is the time difference between JST and SGT?
SGT is 1 hour behind JST. Japan Standard Time is UTC+9 and Singapore Time is UTC+8, so Singapore time always trails Japan by one hour.
This means a meeting planned in Japan needs only a small adjustment for Singapore participants. For example, 12:00 JST = 11:00 SGT, which makes same-day scheduling between the two locations much easier than with larger international time gaps.
When is 9 AM JST in SGT?
9:00 JST = 8:00 SGT. If a Tokyo team starts a morning call at 9 AM, colleagues in Singapore would join at 8 AM.
This can be useful for early operational check-ins, but it may be slightly early for some teams depending on office routines. If you want a more comfortable start for Singapore participants, moving later in the JST day often creates a better overlap.
Does the JST to SGT difference change during DST?
No, the difference does not change during DST because JST does not observe DST and SGT does not observe DST. The gap remains 1 hour for the entire year.
That consistency is valuable for recurring meetings, monthly reporting, and long-term calendar planning. Unlike time zone pairs affected by seasonal clock changes, Japan and Singapore keep the same relationship in every month.
What is 12 PM JST in Singapore time?
12:00 JST = 11:00 SGT. This is one of the most convenient conversion points because it usually falls within regular office hours for both Japan and Singapore.
For business use, this slot works well for regional planning calls, vendor discussions, and midday management updates. It avoids the early-start issue of a 9:00 JST meeting while still leaving most of the day available afterward.
What is 3 PM JST in SGT?
15:00 JST = 14:00 SGT. A mid-afternoon meeting in Japan therefore becomes an early afternoon meeting in Singapore.
This is often a strong choice for collaborative work that needs both teams fully online and settled into the workday. It is especially practical for project reviews, partnership calls, and internal approvals across APAC offices.
What is 6 PM JST in Singapore time?
18:00 JST = 17:00 SGT. This timing lets Japan-based teams meet near the end of their workday while Singapore participants are still within standard business hours.
That makes it useful for final daily updates, handoffs, and end-of-day coordination between offices. It is a good option when the Japanese side needs more time during the day to prepare before meeting with Singapore colleagues.
What is the best meeting time between JST and SGT?
The best meeting time usually depends on whether you want an early, midday, or late-afternoon call, but the one-hour difference gives you a wide overlap. Based on the examples, 12:00 JST = 11:00 SGT, 15:00 JST = 14:00 SGT, and 18:00 JST = 17:00 SGT, all of which fit comfortably into normal business scheduling.
For most professional use, midday to late afternoon in JST tends to be the easiest range because it avoids an early 8:00 SGT start. This is especially helpful for recurring meetings, client presentations, and cross-functional coordination between Japan and Singapore teams.
Is JST ahead of SGT or behind it?
JST is ahead of SGT. Since Singapore is 1 hour behind, every JST time converts to a Singapore time that is one hour earlier.
For example, 9:00 JST = 8:00 SGT and 15:00 JST = 14:00 SGT. This simple pattern makes manual planning easier, especially for teams that work together frequently across Japan and Singapore.