United States
United Kingdom
Washington D.C. to London Time Difference
London is 5 hours ahead of Washington D.C.
Washington D.C. vs London — At a Glance
Washington D.C. to London — Hour-by-Hour
About Washington D.C. and London
Washington D.C. (population: 0.7M) is known for the U.S. capital, the White House, Congress, and the Smithsonian museums. 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
Washington D.C. 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
To call London (+44) from Washington D.C. (+1), aim for late morning or early afternoon in Washington D.C. — that corresponds to evening hours in London when people are usually available.
Currency
Washington D.C. uses USD while London uses GBP. Check current exchange rates before making payments or transferring funds between the two cities.
Language
Washington D.C. and London share English as a common language, which simplifies business communication.
Use our world clock tool to compare Washington D.C. and London visually, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between Washington D.C. and London?
London, United Kingdom is 5 hours ahead of Washington D.C., United States. Washington D.C. is in the America/New York timezone (UTC-4) and London is in the Europe/London timezone (UTC+1).
When it's noon in Washington D.C., what time is it in London?
When it's 12:00 PM (noon) in Washington D.C., it's 5:00 PM in London.
What is the best time to call London from Washington D.C.?
The best time to call London from Washington D.C. is during the overlapping business hours. When it's 9 AM in Washington D.C., it's 2:00 PM in London. Aim for late morning to early afternoon in Washington D.C. for the best chance of reaching someone during working hours.
What currency does London use?
London, United Kingdom uses GBP. Washington D.C. uses USD. 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. Washington D.C. also speaks English, making communication easier.
How do I dial London from Washington D.C.?
To call London from Washington D.C., dial your international access code followed by +44 and the local number. Washington D.C. uses country code +1 and London uses +44.
