London to Singapore Time Converter
Singapore is 8 hours ahead of London while the UK is on GMT, and 7 hours ahead during BST. 9:00 AM in London is 5:00 PM in Singapore on GMT and 4:00 PM on BST.
Daylight saving note: Singapore never changes its clocks. It is 8 hours ahead of London while the UK is on GMT (last Sunday in October to last Sunday in March) and 7 hours ahead while the UK is on BST.
GMT/BST to SGT Conversion Table
Full 24-hour reference table. Use the live clocks above for the exact current offset.
| 🇬🇧 GMT/BST | 🇸🇬 GMT → SGTUTC+0 to UTC+8, while the UK is on GMT | 🇸🇬 BST → SGTUTC+1 to UTC+8, while the UK is on BST | Note |
|---|---|---|---|
| 00:00 | 8:00 AM | 7:00 AM | |
| 01:00 | 9:00 AM | 8:00 AM | |
| 02:00 | 10:00 AM | 9:00 AM | |
| 03:00 | 11:00 AM | 10:00 AM | |
| 04:00 | 12:00 PM | 11:00 AM | |
| 05:00 | 1:00 PM | 12:00 PM | |
| 06:00 | 2:00 PM | 1:00 PM | |
| 07:00 | 3:00 PM | 2:00 PM | |
| 08:00 | 4:00 PM | 3:00 PM | |
| 09:00 | 5:00 PM | 4:00 PM | |
| 10:00 | 6:00 PM | 5:00 PM | |
| 11:00 | 7:00 PM | 6:00 PM | |
| 12:00 | 8:00 PM | 7:00 PM | |
| 13:00 | 9:00 PM | 8:00 PM | |
| 14:00 | 10:00 PM | 9:00 PM | |
| 15:00 | 11:00 PM | 10:00 PM | |
| 16:00 | 12:00 AM | 11:00 PM | next day |
| 17:00 | 1:00 AM | 12:00 AM | next day |
| 18:00 | 2:00 AM | 1:00 AM | next day |
| 19:00 | 3:00 AM | 2:00 AM | next day |
| 20:00 | 4:00 AM | 3:00 AM | next day |
| 21:00 | 5:00 AM | 4:00 AM | next day |
| 22:00 | 6:00 AM | 5:00 AM | next day |
| 23:00 | 7:00 AM | 6:00 AM | next day |
* "next day" = converted time falls on the following calendar day.
Best Hours to Schedule London–Singapore Calls
On GMT, London's 9 AM start is exactly Singapore's 5 PM close, so two 9-to-5 days touch and never overlap. On BST the gap is 7 hours and one hour opens up: 9:00 to 10:00 AM in London is 4:00 PM to 5:00 PM in Singapore. In winter the practical choice is an early start in London. 8:00 to 9:00 AM there is 4:00 PM to 5:00 PM in Singapore, the last hour of its day.
| When | London | Singapore | Fit |
|---|---|---|---|
| GMT → SGT (UTC+0 to UTC+8, while the UK is on GMT) | 8:00 AM–9:00 AM | 4:00 PM–5:00 PM | London: before 9 AM. Singapore: inside 9 AM–5 PM.Winter: London starts early so Singapore can finish at 5 PM. |
| BST → SGT (UTC+1 to UTC+8, while the UK is on BST) | 9:00 AM–10:00 AM | 4:00 PM–5:00 PM | Both inside 9 AM–5 PMSummer: the only hour where both 9-to-5 days overlap. |
"Inside 9 AM–5 PM" is a planning assumption for a standard office day on each side, not a claim about any company's hours.
About London (GMT/BST)
London changes clocks twice a year, so the gap to Singapore changes with it. A meeting fixed at a London time lands an hour earlier on Singapore's clock after the UK springs forward on the last Sunday in March: 10:00 AM in London is 6:00 PM on GMT and 5:00 PM on BST. Late London afternoons are already night in Singapore, because 5:00 PM GMT is 1:00 AM the next day.
About Singapore (SGT)
Singapore uses a single zone, SGT (UTC+8), all year. Its clocks don't move, and neither does the city's day, so every change in this gap comes from London. Going the other way, 9:00 AM in Singapore is 1:00 AM in London on GMT and 2:00 AM on BST, which is the middle of the London night in both cases.
How to Avoid London–Singapore Conversion Mistakes
Singapore is already on the next calendar day from these GMT/BST times onward: 4:00 PM for GMT → SGT, 5:00 PM for BST → SGT. For example, 11:00 PM GMT/BST is 7:00 AM in Singapore on the next day (GMT → SGT).
The trap is a recurring call that was set up in one season. A weekly 4:00 PM Singapore call is 8:00 AM in London on GMT and 9:00 AM on BST, so if the Singapore side holds the slot, the London side moves an hour twice a year. When you quote a time to Singapore, name the city and the date, not just "GMT", because a London colleague may be on BST without thinking about it.
Frequently Asked Questions
What is the time difference between London and Singapore?
Singapore is 8 hours ahead of London from late October to late March (GMT) and 7 hours ahead from late March to late October (BST). Singapore doesn't change its clocks, so the shift comes from London.
What time is 9 AM in London in Singapore?
While the UK is on GMT, 9:00 AM in London is 5:00 PM in Singapore. During BST it's 4:00 PM. Both results are late in the Singapore afternoon.
When does the London to Singapore gap change?
On the last Sunday in March, when the UK moves to BST and the gap narrows from 8 hours to 7, and on the last Sunday in October, when it widens back to 8. Singapore has no change on either date.
What is the best time for a London to Singapore call?
Early morning in London. On BST, 9:00 to 10:00 AM in London is 4:00 PM to 5:00 PM in Singapore, inside a 9-to-5 day on both sides. On GMT, 8:00 to 9:00 AM in London is 4:00 PM to 5:00 PM in Singapore, so London starts early and Singapore finishes on time.