Vietnam
United Kingdom
Hanoi to London Time Difference
London is 6 hours behind Hanoi
Hanoi vs London — At a Glance
Hanoi to London — Hour-by-Hour
About Hanoi and London
Hanoi (population: 8.1M) is known for Vietnam's capital, Ho Chi Minh Mausoleum, Old Quarter, and pho cuisine. London (population: 8.8M) is known for global finance, the City of London, Buckingham Palace, and the world's oldest underground railway.
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 London (+44) from Hanoi (+84), be mindful of the 6-hour gap. The safest window is late afternoon in Hanoi (4–6 PM) to reach people during waking hours.
Currency
Hanoi uses VND while London uses GBP. Check current exchange rates before making payments or transferring funds between the two cities.
Language
Hanoi primarily speaks Vietnamese, while London speaks English. For business communication, English is commonly used as a bridge language in international settings.
Use our world clock tool to compare Hanoi and London visually, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between Hanoi and London?
London, United Kingdom is 6 hours behind Hanoi, Vietnam. Hanoi is in the Asia/Bangkok timezone (UTC+7) and London is in the Europe/London timezone (UTC+1).
When it's noon in Hanoi, what time is it in London?
When it's 12:00 PM (noon) in Hanoi, it's 6:00 AM in London.
What is the best time to call London from Hanoi?
The best time to call London from Hanoi is during the overlapping business hours. When it's 9 AM in Hanoi, it's 3:00 AM in London. Aim for late morning to early afternoon in Hanoi for the best chance of reaching someone during working hours.
What currency does London use?
London, United Kingdom uses GBP. Hanoi uses VND. You will need to check the current exchange rate for transactions between the two.
What language is spoken in London?
The primary language in London is English. English is widely used for international business communication.
How do I dial London from Hanoi?
To call London from Hanoi, dial your international access code followed by +44 and the local number. Hanoi uses country code +84 and London uses +44.
