United Kingdom
Vietnam
London to Hanoi Time Difference
Hanoi is 6 hours ahead of London
London vs Hanoi — At a Glance
London to Hanoi — Hour-by-Hour
About London and Hanoi
London (population: 8.8M) is known for global finance, the City of London, Buckingham Palace, and the world's oldest underground railway. Hanoi (population: 8.1M) is known for Vietnam's capital, Ho Chi Minh Mausoleum, Old Quarter, and pho cuisine.
Business Hours Overlap
Hanoi is a national capital, so official government hours (typically 9 AM–5 PM) are the primary window for diplomatic and administrative communication with London.
Calling Between Cities
When calling Hanoi (+84) from London (+44), be mindful of the 6-hour gap. The safest window is early morning in London (8–10 AM) to reach people during waking hours.
Currency
London uses GBP while Hanoi uses VND. Check current exchange rates before making payments or transferring funds between the two cities.
Language
London primarily speaks English, while Hanoi speaks Vietnamese. For business communication, English is commonly used as a bridge language in international settings.
Use our world clock tool to compare London and Hanoi visually, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between London and Hanoi?
Hanoi, Vietnam is 6 hours ahead of London, United Kingdom. London is in the Europe/London timezone (UTC+1) and Hanoi is in the Asia/Bangkok timezone (UTC+7).
When it's noon in London, what time is it in Hanoi?
When it's 12:00 PM (noon) in London, it's 6:00 PM in Hanoi.
What is the best time to call Hanoi from London?
The best time to call Hanoi from London is during the overlapping business hours. When it's 9 AM in London, it's 3:00 PM in Hanoi. Aim for late morning to early afternoon in London for the best chance of reaching someone during working hours.
What currency does Hanoi use?
Hanoi, Vietnam uses VND. London uses GBP. You will need to check the current exchange rate for transactions between the two.
What language is spoken in Hanoi?
The primary language in Hanoi is Vietnamese. English is widely used for international business communication.
How do I dial Hanoi from London?
To call Hanoi from London, dial your international access code followed by +84 and the local number. London uses country code +44 and Hanoi uses +84.
