A Travel Price Comparison for Families, Couples, and Backpackers Dover vs. Frankfurt for Attractions, Food, Nightlife, and Families

Should you visit Dover or Frankfurt?

Which is cheaper to visit? Which is more expensive for vacation?

Which city is more affordable and which is best for your travel style? If you're trying to figure out where to go next, comparing the travel costs between Dover and Frankfurt can help you decide which place is right for you.

Dover

Dover is a breathtaking, iconic, and rustic town. It's considered by many to be an absolutely beautiful destination, too. It's also popular because of the museums, food, and hiking.

Frankfurt

Frankfurt is a connected, energetic, and dynamic city. As it's a big city, visitors will find plenty to do, too. Other popular activities here include nightlife, food, and shopping.

Dover and Frankfurt: Pros and Cons

Pros
  • Popular museums and historical sights
  • Good for hiking
  • Family-friendly
  • Good for couples and romance
  • Good for backpackers and budget travelers
  • Impressive beauty
Things to Consider
  • Less popular for nightlife
  • Public transit not as usable
Pros
  • Popular museums and historical sights
  • Active nightlife
  • Scenic old town
  • Fun shopping
  • Family-friendly
  • Good for couples and romance
  • Good for backpackers and budget travelers
  • Good for students
  • Good public transit
  • Big city activities


Is there more to do in Dover or Frankfurt?

Travelers will usually find more to do in Frankfurt. Although Dover and Frankfurt are popular destinations, Frankfurt has more sights and attractions for tourists. Frankfurt is very popular for its museums, food, nightlife, historical sights, shopping, and big city activities, while Dover attracts visitors for its hiking and impressive beauty. Dover is famous for the famous White Cliffs of Dover as well as the ferry connection to mainland Europe. Frankfurt is famous for its financial industry, its popularity as a transportation hub, and its active nightlife. It is also well known for The Old Town Center.

The Old Town Center
The Old Town Center

How is Dover different from Frankfurt?

Which is Better for a Holiday?

Let's take a look at the differences and similarities between Frankfurt and Dover. Then, you can decide for yourself which place is better for your next trip.

Are the Museums and Historical Sights Better in Dover or Frankfurt?

Dover
Frankfurt

Frankfurt is a well-known place for its sights and museums. Also, Dover is not as famous, but is still a good town to visit for its museums and history.

Many visitors head to Frankfurt specifically to visit some of its top-rated museums and other sights. Many sights are concentrated in the old town center. Highlights include the Historical Museum and St. Nicholas Church. Elsewhere, make sure you check out Maintower, the Städel Museum, and the Museum District.

Dover is a good place to visit if you're interested in museums or other recognizable sights. Aside from the iconic White Cliffs of Dover, there is the Dover Castle, the South Foreland Lighthouse, and the Grand Shaft.


Is the Food Better in Dover or Frankfurt? Which Destination has the Best Restaurants?

Dover
Frankfurt

Frankfurt is a well-known place for its local cuisine and restaurants. Also, Dover is not as famous, but is still a good town to visit for its restaurants.

Dining out in Frankfurt is an experience not to be missed. In addition to a number of international restaurants, the city also has a strong regional cuisine. Some of the most interesting local dishes include Frankfurter Sausage, Rindwurst, Grüne Soße (an herb sauce), and Handkäse mit Musik (marinated sour milk cheese). Also make sure you sample the Apfelwein.

There are plenty of up and coming restaurants around Dover. The town has a growing food scene that includes waterfront restaurants and local dishes. Find a restaurant with a view to make sure you take full advantage of the setting.

Is Dover or Frankfurt Better for Nightlife?

Dover
Frankfurt

Frankfurt is a well-known place for its evening party scene. However, Dover is not a good town for nightlife.

Frankfurt offers plenty to do in the evening. It's a vibrant city with many trendy clubs, cocktail bars, music venues, and more. You can enjoy techno, hip hop, and almost any style of music. There are also festivals, beer halls, and classic pubs.

Those looking for nightlife will find a few places to hang out in Dover. The nightlife has a relaxed atmosphere with wine bars and microbreweries.

Is Dover or Frankfurt Better for its Old Town?

Dover
Frankfurt

Frankfurt is very good for its historic old town charm. However, Dover does not have a historic old town.

Frankfurt offers a nice historic old town area. Many museums and cafes are concentrated in the old town area.

Dover does not have a historic old town.


Is Dover or Frankfurt Better for Hiking?

Dover
Frankfurt

Dover is an excellent place to visit for its hiking trails. However, Frankfurt is not a hiking destination.

Many visitors explore the nearby hiking trails while visiting Dover. There are many beautiful countryside walks that take you through the rolling hills and along the iconic white cliffs. Some of the best hikes in the area include The England Coast Path, The North Downs Way Saxon Shore Way.

Frankfurt is not a hiking destination.

Is the Shopping Better in Dover or Frankfurt?

Dover
Frankfurt

Frankfurt is a well-known place for its shopping areas. However, Dover is not a noteworthy shopping destination.

Browsing through shops is a popular activity in Frankfurt. It's a financial capital in Europe, and as such there are plenty of high end shopping opportunities. MyZeil is a major shopping mall in the city and Kleinmarkthalle is a more classic market. Popular shopping neighborhoods and streets include Goethestrasse, Sachsenhausen and Berger Strasse.

Dover is not a noteworthy shopping destination.

Is Dover or Frankfurt Better for Families?

Dover
Frankfurt

Frankfurt is a well-known place for its family-friendly activities. Also, Dover is not as famous, but is still a good town to visit for its kid-friendly activities.

Frankfurt is known to be a very family-friendly place to visit. In town there's a zoo, a children’s museum, a math and technology museum (EXPERIMINTA), and a number of parks, natural areas, and playgrounds. If you're willing to head out of town then you can visit Taunus Wunderland, which is an amusement park with about 50 rides and attractions.

Dover is a family-friendly town. There are a few kid-friendly museums like the Dover Transport Museum and the Dover Castle. Also make sure you check out the South Foreland Lighthouse.


Is Dover or Frankfurt Better for Couples?

Dover
Frankfurt

Dover is an excellent place to visit for couples. Also, Frankfurt is not quite as popular, but is fairly good for romance.

Dover makes for a fun place to visit for a couple. The White Cliffs of Dover are an iconic sight and perfect for a romantic trip away. Also make sure you check out St. Margaret's Bay Beach and the Kearsney Abbey Gardens.

Frankfurt is a nice destination for couples. The iconic spot of romance in the city is the Iron Footbridge, which is a traditional spot to attach a "love lock" and take a selfie. The city also offers river cruises, winery tours, and beautiful parks and natural areas.

Is Dover or Frankfurt Better for Backpackers and Budget Travelers?

Dover
Frankfurt

Frankfurt is a well-known place for backpackers. Also, Dover is not as famous, but is still a good town to visit for backpackers and budget travelers.

Frankfurt is a very popular city for backpackers and budget travelers. You'll find a number of hostels in town. The city is also a major transportation hub so many backpackers pass through the area at some point on their trip through Germany.

It's common for backpackers to visit Dover. You'll find several nice hostels to choose from in the town.

Is Dover or Frankfurt Better for Students?

Dover
Frankfurt

Frankfurt is a world-class destination for students. However, Dover is not popular with students.

Students come from all over the world to visit Frankfurt. The city offers prestigious universities and a world class education. The economy offers many internships and job opportunities and you'll find students from around the world studying here. Frankfurt is also well connected to the rest of Europe, so it's easy to explore the region.

Dover is not popular with students.


Is Dover or Frankfurt Better for Public Transit? Which Is Easier to Get Around Without a Car?

Dover
Frankfurt

Frankfurt is a world-class destination for its public transit. However, Dover is not a good town for times when you don't have a car.

With a huge network, the transit system in Frankfurt can get you around easily. It is a huge transportation hub with a major international airport and a number of international train connections. Locally, the city has a subway, trams, commuter trains and buses.

Public transit is mostly limited in Dover. There are public buses through the district.

Is Dover or Frankfurt a more walkable city?

Dover
Frankfurt

Frankfurt is a well-known place for its ease of walking around. Also, Dover is not as famous, but is still a good town to visit for its walkability.

Frankfurt is a very walkable destination. It has a compact city center that is generally pedestrian-friendly.

Dover is somewhat walkable. You can wander around the countryside, but prepare for rolling hills and great views.

For even more information, also check out Is Dover Worth Visiting? and Is Frankfurt Worth Visiting?.

Should I spend more time in Frankfurt or Dover?

How long in Dover or Frankfurt?

Visitors can find plenty of fun things to do in both Dover and Frankfurt. With generally more activities and things to do, visitors tend to spend more time in Dover than in Frankfurt. Usually, 2-4 days is a good amount of time for Dover, and 1-3 days is enough time in Frankfurt.

Families should spend more time in Frankfurt than Dover. Because of the many family-friendly attractions and fun things to do for kids in Frankfurt, it's a great place to visit with the whole family.

Couples should spend more time in Frankfurt than Dover. You'll find plenty of romantic sights and fun activities in Frankfurt that are perfect for a weekend getaway or a longer couple's trip.

Backpackers and budget travelers should spend more time in Frankfurt than Dover if your budget allows for it. With a larger number of budget-friendly sights, good nightlife, and active things to do, anyone traveling on a budget would have a good time in Frankfurt.


  • How many days in Dover or Frankfurt? Ideal Length of Stay
    Dover 2-4 
    Frankfurt 1-3

One day in Dover or Frankfurt?

You'll find food and museums around the town of Dover. Hiking can easily take up a good amount of your time here, too. Since there is so much to do in the area, one day is probably not enough for all of it. It has many unique tourist attractions and fascinating things to do.

Each neighborhood in Frankfurt has its own distinct appeal, so there are pleny of areas to explore. This city offers a variety of activities to choose from. Because of this, one day is usually enough time for a trip here.


A weekend in Dover or Frankfurt?

You'll find museums and food around the iconic destination of Dover. Hikers are also drawn to this area. This is a popular place to visit for a weekend.A weekend should give you a good understanding of everything this town has to offer. This town offers a variety of activities to choose from.

It's hard to know how much time to spend in Frankfurt. For many, it makes a great getaway for a weekend. This would be the perfect place to spend a weekend, as it has just the right amount of activities. The length of your ideal trip is an individual decision.

Five days in Dover or Frankfurt?

Travelers enjoy the food and museums when visiting the stunning town of Dover. The length of your ideal trip is an individual decision. Many visitors also spend a good bit of time hiking. Five days is plenty of time to see everything, even with extra days to spare.

Frankfurt is a fun place to experience. Travelers enjoy the nightlife and food when visiting the big city destination of Frankfurt. Most people find that five days is more than enough time to see everything.

A week in Dover or Frankfurt?

Dover is a popular choice for travelers. Make sure you spend some time hiking while you're in the area. One week is usually plenty of time to spend here with extra days to spare. With this much time, visitors often visit nearby destinations or take day trips. It will give you the chance to have new experiences.

You'll find food and shopping around the dynamic big city of Frankfurt. Take your pick from the many activities offered here. One week is plenty of time to see everything, even with extra days to spare.


For some great organized tour ideas, see The Best 3-Day Tours in United Kingdom, The Best Bicycle Tours in United Kingdom, The Best Coach Bus Tours in Germany, and The Best Adventure Tours to Germany.


Which place is cheaper, Frankfurt or Dover?

These are the overall average travel costs for the two destinations.

The average daily cost (per person) in Dover is £124, while the average daily cost in Frankfurt is £105. These costs include accommodation (assuming double occupancy, so the traveler is sharing the room), food, transportation, and entertainment. While every person is different, these costs are an average of past travelers in each destination. What follows is a categorical breakdown of travel costs for Dover and Frankfurt in more detail.



Accommodation
  • Accommodation Hotel or hostel for one person
    Dover £62
    Frankfurt £49
  • Accommodation Typical double-occupancy room
    Dover £124
    Frankfurt £98
Compare Hotels in Dover and Frankfurt

Looking for a hotel in Dover or Frankfurt? Prices vary by location, date, season, and the level of luxury. See below for options and compare which is best for your budget and travel style.

Hotels in Dover


Hotels in Frankfurt


Kayak helps you find the best prices for hotels, flights, and rental cars for destinations around the world. Compare prices for multiple destinations when planning your next trip.


Our Analysis
We've analyzed the average and typical hotel prices based on guest reviews, star ratings, and hotel amenities here: Dover Hotel Prices.

Local Transportation
  • Local Transportation Taxis, local buses, subway, etc.
    Dover £39
    Frankfurt £21

Hired Cars and Shuttles in Dover

Some specific examples of transportation prices in Dover:

  • Private transfer from Dover to London hotel or airport: $210
  • Private Transfers from Heathrow Airport to Dover Cruise Port: $147
  • Private Transfer from Dover Port to London Gatwick Airport (LGW): $55
  • Private Transfer from Dover Cruise Port to London City Hotels: $98
  • Private Transfer from Dover Cruise Port to London Airport (LHR): $66
  • Private Transfer from Dover Cruise Port to Gatwick City Hotels: $55
  • Dover to Heathrow and London Direct Shared Transfer: $131
  • One-Way Taxi Transfer from Dover Seaport to London: $254

Typical Local Transportation Prices in Frankfurt

Here are some examples of typical transportation prices from actual travelers in Frankfurt:


  • Car Rental
    £43

Hired Cars and Shuttles in Frankfurt

Also for Frankfurt, here are a few examples of actual transportation services:

  • Frankfurt Hahn Airport: Bus transfer from/to Mainz: $18
  • Frankfurt Hahn Airport: Bus transfer from/to city central: $20
  • Wiesbaden Thermal to Frankfurt Airport (FRA) - Departure Transfer: $27
  • Private One Way Frankfurt Airport Transfer To and From Frankfurt: $45
  • Arrival Private Transfer from Frankfurt Airport FRA to Frankfurt by business car: $54
  • Departure Private Transfer: Frankfurt to Frankfurt Airport FRA by business car: $54
  • Private 1-Way Transfer From Frankfurt Airport: $54
  • Transfer in Private Vehicle from Frankfurt Airport (FRA)- Frankfurt City: $54
  • Transfer in Private Vehicle from Frankfurt City - Frankfurt Airport (FRA): $54
  • Frankfurt Airport (FRA) to Frankfurt Arrival Private Transfer: $55
  • Frankfurt to Frankfurt Airport (FRA) Departure Private Transfer: $55
  • Frankfurt Airport (FRA) to Wiesbaden Thermal Round-Trip Transfer: $55

Is it cheaper to fly into Dover or Frankfurt?

Prices for flights to both Frankfurt and Dover change regularly based on dates and travel demand. We suggest you find the best prices for your next trip on Kayak, because you can compare the cost of flights across multiple airlines for your prefered dates.





Food
  • Food Meals for one day
    Dover £38
    Frankfurt £35

Typical Food Prices in Frankfurt

For Frankfurt, here are some examples of average food and meal prices for travelers:


  • Soda
    £1.71
  • Bagel Sandwich and Latte
    £5.99
  • Ham & Cheese Sandwich and Coffee
    £5.13
  • Sandwich and Cola
    £5.99

Food Tours and Cooking Classes in Frankfurt

For Frankfurt, here are some samples of tours and activities related to meals and dining experiences:

  • FOOD TOUR WITH 3-4 LOCAL INSIDER FOODSPOTS: $80
  • Eltz Castle Small-Group Tour from Frankfurt with Dinner: $281

Entertainment
  • Entertainment Entrance tickets, shows, etc.
    Dover £20
    Frankfurt £31

Tours and Activities in Dover

Some specific costs of activities, tours, and entrance tickets for Dover are as follows:

  • Canterbury Landmarks Private Walking Tour: $218
  • Canterbury Private Walking Tour with a Professional Guide: $276
  • Canterbury Tour App, Hidden Gems Game and Big Britain Quiz (1 Day Pass) UK: $19
  • Canterbury's World Heritage Sites Guided Walking Tour: $229
  • Christmas Tales in Canterbury – Private Walking Tour: $217
  • Dover & White Cliffs Tour; Canterbury, Coastal Towns & Castles: $210
  • Dover Castle Admission Ticket: $29
  • Dover Cruise Ship to Leeds Castle via Canterbury, Villages & back: $177
  • Dover Shore Excursion:Post-Cruise Tour to London via Canterbury and Leeds Castle: $172
  • From Dover Cruise Ship; Grand Tour of White Cliffs Country & back: $108
  • From London: Dover Castle and White Cliffs Tour by Car: $1,083
  • Literary & Cultural Heritage: Canterbury Private Walking Tour: $218

Tours and Activities in Frankfurt

For Frankfurt, here are a few prices for actual activities, tours, and tickets provided by various companies:

  • Selfguided Audiotour "Frankfurt Old Town": $3.20
  • First Discovery Walk and Reading Walking Tour: $3.21
  • Germany eSIM Tourist Roaming Data Plan: $4.28
  • City Exploration Game and Tour: $4.81
  • Frankfurt Scavenger Hunt and Best Landmarks Self-Guided Tour: $6.55
  • Highlights Self-Guided Scavenger Hunt & City Tour: $6.95
  • Struwwelpeter Museum Entry Ticket w/Audio Guide: $7.49
  • Old Town Smartphone Audio Tour: $7.99
  • A Self-Guided Audio Tour by Smartphone: $7.99
  • Walking Tour with Audio Guide on App: $8.02
  • Historisches Museum Entry Ticket: $8.56
  • Frankfurt Self-Guided Audio Tour: $9.00

Alcohol
  • Alcohol Drinks for one day
    Dover £7.71
    Frankfurt £26

Sample the Local Flavors in Dover

Here are a few nightlife and alcohol tours and activities from local tour providers in Dover:

  • Full Day Wine Tour in Sussex and Kent: $178

Typical Alcohol Prices in Frankfurt

Below are a few samples from actual travelers for alcohol and nightlife costs in Frankfurt:


  • Becks Beer
    £1.71

Sample the Local Flavors in Frankfurt

Here are a few nightlife and alcohol tours and activities from local tour providers in Frankfurt:

  • Night Pub Crawl through Alt-Sachsenhausen: $21
  • Enjoy the night with our Pub Tours: $32
  • Weekend Night Pub Crawl through Alt-Sachsenhausen: $34
  • Full Day Private Rhine Valley Wine Tour Experience from Frankfurt: $279
  • Frankfurt Wine Tasting Tour with a Wine Expert: $280
  • Frankfurt Wine Tasting Tour with a Wine Expert: $286
  • Guided Walk Tour With Apple Wine Tasting: $334
  • Bachelor(ette) Party with Pub Crawl: $401
  • Private Premium Pub Crawl Tour: $513
  • Private Rhine Valley tour with river cruise & wine tasting: $748


When we compare the travel costs of actual travelers between Dover and Frankfurt, we can see that Dover is more expensive. And not only is Frankfurt much less expensive, but it is actually a significantly cheaper destination. So, traveling to Frankfurt would let you spend less money overall. Or, you could decide to spend more money in Frankfurt and be able to afford a more luxurious travel style by staying in nicer hotels, eating at more expensive restaurants, taking tours, and experiencing more activities. The same level of travel in Dover would naturally cost you much more money, so you would probably want to keep your budget a little tighter in Dover than you might in Frankfurt.

If you're trying to decide if either of these two destinations are within your price range, also see Is Dover Expensive? and Is Frankfurt Expensive?.


Which is Bigger, Dover or Frankfurt?

Frankfurt has a larger population, and is about 20 times larger than the population of Dover. When comparing the sizes of Dover and Frankfurt, keep in mind that a larger population does not always imply the destination has more attractions or better activities. So, always research the type of place that you want to visit along with the activities and attractions that interest you.


When is the best time to visit Dover or Frankfurt?

Both places have a temperate climate with four distinct seasons. As both cities are in the northern hemisphere, summer is in July and winter is in January.

Should I visit Dover or Frankfurt in the Summer?

Both Frankfurt and Dover during the summer are popular places to visit. The summer months attract visitors to Dover because of the hiking and the family-friendly experiences. Furthermore, the city activities and the family-friendly experiences are the main draw to Frankfurt this time of year.

Dover is cooler than Frankfurt in the summer. The daily temperature in Dover averages around 17°C (63°F) in July, and Frankfurt fluctuates around 19°C (67°F).

In Frankfurt, it's very sunny this time of the year. It's quite sunny in Dover. In the summer, Dover often gets around the same amount of sunshine as Frankfurt. Dover gets 212 hours of sunny skies this time of year, while Frankfurt receives 225 hours of full sun.

Dover usually gets less rain in July than Frankfurt. Dover gets 45 mm (1.8 in) of rain, while Frankfurt receives 63 mm (2.5 in) of rain this time of the year.


  • Summer Average Temperatures July
    Dover 17°C (63°F) 
    Frankfurt 19°C (67°F)

Should I visit Dover or Frankfurt in the Autumn?

The autumn attracts plenty of travelers to both Dover and Frankfurt. The hiking trails and the natural beauty of the area are the main draw to Dover this time of year. Furthermore, many travelers come to Frankfurt for the city's sights and attractions and the shopping scene.

In the autumn, Dover is a little warmer than Frankfurt. Typically, the autumn temperatures in Dover in October average around 12°C (54°F), and Frankfurt averages at about 11°C (51°F).

Dover usually receives more sunshine than Frankfurt during autumn. Dover gets 119 hours of sunny skies, while Frankfurt receives 103 hours of full sun in the autumn.

In October, Dover usually receives more rain than Frankfurt. Dover gets 62 mm (2.4 in) of rain, while Frankfurt receives 51 mm (2 in) of rain each month for the autumn.


  • Autumn Average Temperatures October
    Dover 12°C (54°F) 
    Frankfurt 11°C (51°F)

Should I visit Dover or Frankfurt in the Winter?

The winter brings many poeple to Dover as well as Frankfurt. Many travelers come to Dover for the museums and the cuisine. Additionally, many visitors come to Frankfurt in the winter for the museums, the shopping scene, and the cuisine.

Frankfurt can get quite cold in the winter. Be prepared for some very cold days in Dover. In January, Dover is generally much warmer than Frankfurt. Daily temperatures in Dover average around 4°C (40°F), and Frankfurt fluctuates around 1°C (34°F).

In the winter, Dover often gets more sunshine than Frankfurt. Dover gets 57 hours of sunny skies this time of year, while Frankfurt receives 41 hours of full sun.

Dover usually gets around the same amount of rain in January as Frankfurt. Dover gets 46 mm (1.8 in) of rain, while Frankfurt receives 44 mm (1.7 in) of rain this time of the year.


  • Winter Average Temperatures January
    Dover 4°C (40°F) 
    Frankfurt 1°C (34°F)

Should I visit Dover or Frankfurt in the Spring?

Both Frankfurt and Dover are popular destinations to visit in the spring with plenty of activities. Many visitors come to Dover in the spring for the natural beauty. Also, most visitors come to Frankfurt for the activities around the city during these months.

Dover is cooler than Frankfurt in the spring. The daily temperature in Dover averages around 9°C (47°F) in April, and Frankfurt fluctuates around 10°C (50°F).

Dover usually receives around the same amount of sunshine as Frankfurt during spring. Dover gets 162 hours of sunny skies, while Frankfurt receives 163 hours of full sun in the spring.

In April, Dover usually receives less rain than Frankfurt. Dover gets 42 mm (1.7 in) of rain, while Frankfurt receives 52 mm (2 in) of rain each month for the spring.


  • Spring Average Temperatures April
    Dover 9°C (47°F) 
    Frankfurt 10°C (50°F)

Typical Weather for Frankfurt and Dover

Dover Frankfurt
Temp (°C) Rain (mm) Temp (°C) Rain (mm)
Jan 4°C (40°F) 46 mm (1.8 in) 1°C (34°F) 44 mm (1.7 in)
Feb 5°C (40°F) 33 mm (1.3 in) 3°C (37°F) 40 mm (1.6 in)
Mar 6°C (44°F) 41 mm (1.6 in) 6°C (43°F) 51 mm (2 in)
Apr 9°C (47°F) 42 mm (1.7 in) 10°C (50°F) 52 mm (2 in)
May 12°C (53°F) 38 mm (1.5 in) 14°C (58°F) 61 mm (2.4 in)
Jun 15°C (59°F) 47 mm (1.9 in) 17°C (63°F) 70 mm (2.8 in)
Jul 17°C (63°F) 45 mm (1.8 in) 19°C (67°F) 63 mm (2.5 in)
Aug 17°C (63°F) 46 mm (1.8 in) 19°C (66°F) 65 mm (2.6 in)
Sep 15°C (59°F) 56 mm (2.2 in) 16°C (60°F) 48 mm (1.9 in)
Oct 12°C (54°F) 62 mm (2.4 in) 11°C (51°F) 51 mm (2 in)
Nov 8°C (46°F) 65 mm (2.6 in) 5°C (42°F) 59 mm (2.3 in)
Dec 6°C (42°F) 49 mm (1.9 in) 2°C (36°F) 54 mm (2.1 in)