How Big is London? What Tourists Need to Know

Tourists ask me everyday, “How big is London, really?” They want to know where they should stay, how to get around, and how many days to spend here.

The answer is: London is way bigger than you think.

You should stay closer to the center than you think, you’ll need more time here than you think, and you should plan more time for transport than you think.

The biggest mistake tourists make when visiting London is underestimating the size. And before you actually arrive and begin exploring, it’s hard to understand just how massive this city really is.

Here’s my easy guide to understanding the size of London, including some important London geography, tips for getting around London, and size comparisons with other major cities.

Aerial view of London showcasing its vast expanse with iconic landmarks like the Shard, the River Thames, and Tower Bridge, under the question 'How Big is London?' A pin with the UK flag centers over the city, symbolizing the heart of the metropolis.

London Geography

Left: Map of the UK with London circled in pink. It sits on the southern portion of england. Right: map of England with the greater London area highlighted with a pink arrow. Text overlaid reads: "largest city in the UK" and "8.9+ million people."

London is the capital city of the United Kingdom and the largest city within England, Wales, Northern Ireland, and Scotland.

Current population estimates that over 8.9 million people live in the Greater London area.

Understanding the Size of London

London is separated into two areas: Greater London and Central London.

Greater London is massive, while Central London is more manageable.

You might also have heard of the “City of London”, which is the historic centre of London and falls within Central London (yes, it’s two cities in one!).

Greater London & London Airports

Map of Greater London with a circular pink arrow emphasizing its size, stating '606 square miles'. The iconic Big Ben represents the central point of London, surrounded by the expansive urban area.

Greater London covers a whopping 606+ square miles.

West to east, it’s about 36 miles across. That’s more than 4 times the width of Paris.

North to South, it’s about 25 miles. That’s about twice as long as the island of Manhattan in New York City.

But as a tourist, you don’t need to worry about the massive area of Greater London. Where you’ll most likely be is Central London, where most of the sightseeing is.

You’ll usually only visit Greater London if you fly into most London airports.

Illustrative map showing the 1-hour train routes from Heathrow and Gatwick airports to central London, represented by an iconic clock tower. Pink arrows indicate the direction of travel from planes on the outskirts to the central landmark.

Two major airports in London that most (but not all) visitors fly into are Heathrow Airport and Gatwick Airport. These are both in Greater London.

Both these airports are roughly an hour outside the city by train, or longer in a car.

See my complete guide for getting into London from all airports here.

London Geography: Central London

Map with a pink outline of Central London, indicating it is approximately 5 miles across and takes about 30 minutes to traverse by tube. Key landmarks such as Hyde Park and The British Museum are visible, providing context for London's geography.

Central London covers the areas closest to the center of London, or what some Americans would call “downtown London.”

Though there is no single “downtown” or “central” area of London (there are many), the Central London area is where most tourists will want to stay.

This area is only about 5 miles across (depending on where you measure from), and is very easy to navigate by tube, bus, and walking.

Central London contains most of the major tourist attractions, and includes the major neighborhoods of:

Getting Around London: How Long it Takes

Let’s look over some example routes to see how long it will take you to get around London.

See my complete map of London tourist attractions and how to use mapping apps in London here.

Tube Example Route

Map detailing the common tube route from Buckingham Palace to the Tower of London, with an estimated journey time of 30 minutes. The route is highlighted in yellow, demonstrating the efficient transit options within the sizeable city of London.

Getting from Buckingham Palace to the Tower of London is easy on the tube.

If you take the Circle Line, it will take you about 30 minutes.

The total distance is about 3.5 miles.

Keep in mind that anytime you take the tube, the ride itself may be short, but the walking distances on either end of your journey may take some time.

See my easy, illustrated guide for using the London Underground here.

Bus Example Route

Map showing a common bus route from the London Eye to Borough Market, with an estimated travel time of 12 minutes. The route is delineated by a bold red line, illustrating the proximity of major attractions in London.

To get to Borough Market from the London Eye is an easy 12 minute bus ride.

Bus rides are great for those shorter journeys, or when the tube is too far away or inconvenient.

Buses are also great for sightseeing if you can snag a seat on the upper deck!

See my full guide for how to use London buses here.

Train Example Route

Map highlighting common train routes from central London to Hampton Court Palace, with a travel time of approximately 1 hour. The map outlines major transit lines and stations, emphasizing the accessibility of this historic location from the city center.

If you want to go somewhere outside the city – like Hampton Court Palace – you’ll need to take the train. This destination is about an hour from Central London.

When planning your itinerary, make sure you map each attraction. Some of London’s largest tourist attractions are much further outside the city than you may think.

Harry Potter Studios, for example, are about an hour outside the city and will take extra time to get to.

Use your favorite mapping app to calculate distances and plan your day. The UK’s train system is the most convenient, fastest, and affordable way to get to areas outside of London.

London Size Comparisons: Cities That Are Smaller Than London

Still having a hard time imagining the size of London? Here’s some comparisons for other cities you may have visited to give you a better idea.

London vs. NYC Size

Side-by-side comparison map showing London at 600 square miles and New York City at 469 square miles, highlighting the size difference between the two cities. Icons mark The British Museum in London and the Empire State Building in New York City, giving a visual scale reference for "London size comparisons" and "London vs New York City."
For these size comparisons, I mapped each location using the same zoom level on Google Maps.

The metropolitan area of London is about 600 square miles, while the entire metropolitan area of New York City (including Manhattan, Queens, Brooklyn, etc) is about 469 square miles.

These are both big cities, but the main difference is that it will take you less time to travel London than using NYC’s subway system.

The trains come more often and are faster in our Underground system.

London vs Paris Size

Comparative maps showing London covering 600 square miles and Paris at 40 square miles, with landmarks such as The British Museum and the Eiffel Tower pinpointed to depict the difference in urban spread between London and Paris.

Paris may seem massive, but it’s tiny compared to London. Paris proper only covers 40 square miles compared to London’s 600.

The major difference here is that Paris has distinct borders of what lies inside and outside its 40 square miles, while London’s metropolitan area is much larger and less well-defined.

London vs Chicago Size

Side-by-side map comparison highlighting London's size at 600 square miles alongside Chicago at 234 square miles, with respective landmarks like The British Museum and the National Museum of Mexican Art marked, illustrating the scale of London vs Chicago.

All of Chicago could fit inside just a few of London’s boroughs. Coming from America, you may think Chicago is massive. It’s not compared to London!

Chicago is a mere 234 square miles compared to London’s 600+.

London vs Los Angeles Size

Comparative map graphic depicting London and Los Angeles, with London covering 600 square miles and Los Angeles covering 502 square miles. Notable landmarks such as The British Museum in London and Dodger Stadium in Los Angeles are marked to represent each city's scale.

The entire area of Los Angeles (not including outlying areas like Glendale and Burbank) is 502 square miles compared to London’s 600+.

The major difference in traveling these two cities is that in LA, you’ll need a car, a lot of petrol, and hours to spend in traffic.

In London, you can hop on the tube and enjoy a peaceful 30 minute journey across the city.

London vs. Orlando Size

Comparative map showing London at 600 square miles and Orlando at 110 square miles, emphasizing the substantial difference in scale between the two cities. Notable landmarks like The British Museum and Camping World Stadium are identified, contrasting the urban density of London with Orlando's layout.

If you’ve visited Disney World, you’ll know how massive Orlando seems. Turns out, it’s not.

Orlando covers a mere 110 square miles compared to London’s 600+

London Size Comparisons: Cities that Are Bigger than London

Here’s a few cities that dwarf London when compared to their massive size and spread.

London vs. Tokyo

Map comparison illustrating London at 600 square miles versus Tokyo at 847 square miles, with icons marking The British Museum and the Tokyo Skytree to represent each city's landmarks, providing a visual scale for 'London size comparisons' and 'London vs Tokyo.

Tokyo is one city that is much larger than London! Tokyo covers over 847 square miles, while all of London’s 600+ square miles could fit neatly inside Tokyo’s borders.

London vs. Shanghai Size

Map comparison between London's 600 square miles and Shanghai's extensive 2,400 square miles, with both cities' central areas marked, illustrating a significant size difference in favor of Shanghai.

Shanghai is a city that dwarfs most other cities in the world with its enormous size.

Shanghai, China, spreads out over 2,400 square miles, which could fit 4 Londons inside of it!

How Big is London? Planning Your Travels

Graphic listing tips for navigating London efficiently. It includes advice like mapping out accommodations, calculating distances in advance, allowing ample time for travel, favoring public transportation over cars, and always checking the postcode. The image features the London Underground symbol, a smartphone with a map app, and a taxi with a red cross over it, indicating a preference against driving.

If you’re trying to figure out the size of London, I have a few tips for you. Don’t end up one of those tourists who thinks they can just walk around London and see the whole thing – you can’t. It’s way too big!

Here are my best travel tips for efficiently getting around London, no matter where you’re going:

  • Pay attention to where your accommodation is. Try to stay as close to Central London as you can afford to.
  • Calculate distances using Google Maps or Citymapper. You can set your location to London even if you’re not currently here.
  • Give yourself plenty of time. Don’t overbook your travels – it will take a while to get from place to place, and this city can be exhausting.
  • Use public transport. It’s almost always faster and cheaper than any other option.
  • Check the postcode. Many London & UK streets and neighborhoods have the same name. Make sure you don’t end up 5 miles in the wrong direction!

More London Practical Tips & Commonly Asked Questions

The Best And Worst Times To Visit London

Where To Find Public Toilets In London 

All About Money In London & Exchanging Currency 

Where is “Downtown London”?  

London Postcodes & Zipcodes Explained 

Is King’s Cross The Same As St Pancras?

Is Tipping Required In The UK? 

Should I Rent A Car In London? What’s the City of London vs Just Plain London?

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