Convert SGT to JST
Compare Singapore Time and Japan Standard Time with a live 1-hour difference table, meeting planner, and calendar export tools.
How SGT to JST Works
Singapore Time is UTC+8 and Japan Standard Time is UTC+9, so JST is always 1 hour ahead of SGT. Neither timezone observes daylight saving time, so the conversion stays consistent year-round.
Hour-by-Hour Conversion Table
Use the visual hour-by-hour table to compare SGT and JST across the day and spot the best overlap quickly. Export selected times as ICS files or send them to Google Calendar and Gmail.
Schedule Meetings Across Time
Plan calls between Singapore and Japan with automatic timezone adjustment and clear local-hour matching. Time data is based on the IANA timezone database for accurate current and historical offsets.
Singapore Time (SGT) and Japan Standard Time (JST) are closely aligned Asian time zones used in Singapore and Japan. SGT is UTC+8, JST is UTC+9, and JST is 1 hour ahead of SGT, which means 9:00 SGT = 10:00 JST and 18:00 SGT = 19:00 JST.
How to Convert SGT to JST
Open the SGT to JST converter: Go to https://www.xconvert.com/time-converter/sgt-to-jst-converter to load a visual comparison grid with Singapore Time and Japan Standard Time already aligned on a 24-hour timeline. This view is useful when you are scheduling a supplier call between Singapore and Tokyo, planning a regional sales meeting, or coordinating work between teams in Southeast Asia and Japan.
Add relevant comparison cities: Click + Add City to add cities that commonly work alongside Singapore and Japan, such as Singapore and Tokyo-based business hubs you need to compare with other regional operations. This is especially practical for logistics, electronics manufacturing, finance, and gaming teams that often coordinate across Singapore headquarters and Japan offices.
Select a meeting window on the grid: Click Select, then drag across the timeline to highlight a time range in purple, such as 9:00 SGT to 12:00 SGT, which corresponds to 10:00 JST to 13:00 JST. You can drag the center of the highlighted block to shift the meeting later or use the left and right handles to resize it, which helps when testing whether a Singapore morning meeting still lands comfortably inside Japan 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 useful for sending a confirmed cross-border meeting slot to a Tokyo client, adding a recurring operations review to calendars, or sharing a quick link with remote teams so everyone sees the same time window.
Understanding the SGT to JST Time Difference
SGT is UTC+8 and JST is UTC+9, so Japan Standard Time is always 1 hour ahead of Singapore Time. In practical terms, when it is 12:00 SGT in Singapore, it is 13:00 JST in Japan, and when it is 15:00 SGT, it is 16:00 JST.
This 1-hour gap stays consistent throughout the year because neither Singapore Time nor Japan Standard Time observes daylight saving time. There are no months when the difference changes, so the relationship remains stable in January, June, October, and every other month.
That consistency makes regional scheduling easier than many Europe-US or US-Asia time pairs. If your Singapore team sets a standing call for 18:00 SGT, your Japan participants will always join at 19:00 JST, without seasonal adjustments or calendar shifts.
Best Times for Calls and Meetings Between SGT and JST
Because JST is only 1 hour ahead of SGT, the overlap between normal business hours in Singapore and Japan is broad and easy to manage. A morning meeting in Singapore translates into a slightly later morning slot in Japan, which works well for account management, procurement, software delivery reviews, and executive check-ins.
The clearest examples are straightforward: 9:00 SGT = 10:00 JST, 12:00 SGT = 13:00 JST, 15:00 SGT = 16:00 JST, and 18:00 SGT = 19:00 JST. These examples show that standard daytime collaboration remains practical across both countries, especially for teams working in finance, shipping, semiconductor supply chains, consulting, and regional headquarters functions.
For most business use cases, Singapore morning to late afternoon maps neatly into Japan late morning to early evening. If a team in Singapore wants an early planning session at 9:00 SGT, Japan joins at 10:00 JST; if the Singapore side prefers an afternoon review at 15:00 SGT, Japan sees 16:00 JST, which is still within a normal workday for many offices.
A later Singapore meeting can still work, but it pushes farther into the Japanese evening. For example, 18:00 SGT = 19:00 JST, which may be acceptable for occasional client calls, launch coordination, or logistics escalations, but is less ideal for recurring daily meetings.
Frequently Asked Questions
What is the time difference between SGT and JST?
Japan Standard Time is 1 hour ahead of Singapore Time. SGT is UTC+8, JST is UTC+9, so when it is 9:00 in Singapore, it is 10:00 in Japan.
This small gap makes scheduling much simpler than with long-haul international time zones. It is particularly convenient for regional business across Singapore and Japan because most daytime hours still overlap.
When is 9 AM SGT in JST?
9:00 SGT is 10:00 JST. This is a practical conversion for morning standups, client calls, and operations meetings that start at the beginning of the Singapore workday.
Because Japan is only one hour ahead, a 9 AM meeting in Singapore still lands comfortably in the mid-morning in Japan. That makes it a strong option for recurring weekday meetings.
Does the difference between SGT and JST change during DST?
No, the difference does not change during daylight saving time because neither SGT nor JST observes DST. Singapore Time stays on UTC+8 all year, and Japan Standard Time stays on UTC+9 all year.
As a result, the gap remains 1 hour in every month. There is no need to adjust recurring calendars seasonally when coordinating between Singapore and Japan.
What is 12:00 SGT in JST?
12:00 SGT equals 13:00 JST. This conversion is useful for lunch-hour handoffs, midday reporting, and early afternoon meetings with teams in Japan.
A Singapore noon session becomes a Japan early afternoon session, which often fits well for commercial teams, support staff, and regional leadership calls. It is one of the easiest meeting points for both sides.
What is 15:00 SGT in JST?
15:00 SGT is 16:00 JST. This is often a convenient slot for project reviews, vendor coordination, and end-of-day progress checks between Singapore and Japan.
The timing works well because it remains inside standard office hours in both locations. For teams that need time earlier in the day for internal preparation, this afternoon window is often more practical than a morning call.
What is 18:00 SGT in JST?
18:00 SGT equals 19:00 JST. This can work for urgent discussions, leadership updates, or cross-border calls that need to happen after the Singapore workday.
However, it is already evening in Japan, so it is better suited to occasional meetings than daily recurring sessions. Teams that want stronger attendance usually choose earlier windows.
What is the best meeting time between SGT and JST?
The best meeting times are usually during Singapore daytime hours, because they map directly into slightly later daytime hours in Japan. For example, 9:00 SGT = 10:00 JST, 12:00 SGT = 13:00 JST, and 15:00 SGT = 16:00 JST, all of which are practical for normal business coordination.
These windows are especially useful for regional headquarters communication, supplier management, and customer meetings. Since the difference is fixed at 1 hour all year, companies can keep the same recurring schedule without seasonal changes.
Is SGT ahead of JST or behind JST?
SGT is 1 hour behind JST, and JST is 1 hour ahead of SGT. That means Japan always runs one hour later on the clock than Singapore.
This relationship is easy to remember in practice: add one hour when converting from SGT to JST. So a Singapore schedule can be shared with Japan by moving each meeting time forward by one hour.