A Travel Price Comparison for Families, Couples, and Backpackers Nha Trang vs. Adelaide for Nightlife, Beaches, Families, and Couples

Should you visit Nha Trang or Adelaide?

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

Which city should you visit? Read on to compare the activities as well as the prices of travel for Nha Trang and Adelaide. We'll break down costs for accommodation, food, transportation and more to help you learn more about these two destinations. Then, you can figure out if either of these two places are accessible based on your travel budget, schedule, and interests. So, let's dig into it.

Nha Trang

Nha Trang is a high energy, coastal, and resort-filled city. Other reasons to visit include nightlife, food, and beaches. See Nha Trang travel costs.

Adelaide

Adelaide is a under-rated, elegant, and welcoming city. Visitors also love the food, beaches, and hiking. See Adelaide travel costs.

Nha Trang and Adelaide: Pros and Cons

Pros
  • Popular museums and historical sights
  • Active nightlife
  • Nice resorts
  • Good scuba and snorkeling destination
  • Popular beach
  • Family-friendly
  • Good for couples and romance
  • Good for backpackers and budget travelers
Pros
  • Popular museums and historical sights
  • Popular beach
  • Good for hiking
  • Family-friendly
  • Good for couples and romance
  • Good for backpackers and budget travelers
  • Good for students
Things to Consider
  • Less popular for nightlife


Is there more to do in Nha Trang or Adelaide?

Visitors will generally find more to do in Nha Trang than Adelaide. While Adelaide is larger than Nha Trang, Nha Trang has more sights, attractions, and activities for tourists. Nha Trang is very popular for its nightlife, resorts, and scuba diving & snorkeling, while Adelaide attracts visitors for its beaches, hiking, and shopping. Nha Trang is more touristy than Adelaide and is known for its backpacker-heavy nightlife scene, its long sandy beaches, and its beachside resorts. It is also well known for Long Son Pagoda. Adelaide is famous for its wine scene, vibrant festivals, green spaces, and local sporting events.

How is Nha Trang different from Adelaide?

Which is Better for a Holiday?

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

Are the Museums and Historical Sights Better in Nha Trang or Adelaide?

Nha Trang
Adelaide

Visiting museums and landmarks is a fun activity in both Nha Trang and Adelaide.

Nha Trang offers a variety of museums and landmarks to choose from. While most people visit for the beaches and nightlife in the area, there are also several cultural sights worth visiting. Ponagar Tower, Long Son Pagoda, and XQ Historical Village are all interesting to visit. If you're looking for a thrill, also nearby is Vinpearl Land.

If you're looking for an educational opportunity, there are a decent number of museums and historical sights around Adelaide. There are some interesting buildings along North Terrace such as the Parliament House, the State Library of South Australia, and the South Australian Museum. At the Botanic Garden there's the Santos Museum of Economic Botany. Also make sure you check out the Art Gallery of South Australia.


Is the Food Better in Nha Trang or Adelaide? Which Destination has the Best Restaurants?

Nha Trang
Adelaide

Both Nha Trang and Adelaide offer nice local cuisine and restaurants.

Nha Trang has a delicious restaurant scene that relies on local flavors. Seafood is the most common option in many restaurants. You'll find local curries and spring rolls on many menus. Fish sauce is often served with dishes and many recipes have a sweet flavor. If you need a break from Vietnamese food, there are also restaurants that serve pizza, burgers, and other common international dishes.

There are many up and coming restaurants in the Adelaide area. There's great wine, local restaurants, and charming cafes. You'll find local dishes as well as international flavors around town. The local produce is good and the restaurants offer fresh and delicious recipes.

Is Nha Trang or Adelaide Better for Nightlife?

Nha Trang
Adelaide

Nha Trang is renowned for nightlife. Also, Adelaide is not quite as popular, but is fairly good for nightlife and partying.

Nha Trang is a destination that you simply have to visit at least once for nightlife. The nightlife scene is varied and caters to all types of travelers. There are glamorous rooftop bars and lounges, beachside parties, and booze cruises that cater to the backpacker crowd. The city is big enough to have options for everyone.

Adelaide has an active nightlife scene for those who seek it out. The nightlife scene is filled with rooftop bars, live music venues, and boutique wine bars. Whether you're looking for trendy and luxury or casual and laid back, there are many places to spend a night out.

Is Nha Trang or Adelaide Better for Resorts?

Nha Trang
Adelaide

Nha Trang is a city with good options for its luxury resorts. However, Adelaide is not a resort destination.

Nha Trang has a handful of resorts to choose from. There's a mix of budget guesthouses and hostels, luxury beachfront resorts, and everything in between.

Adelaide is not a resort destination.


Is Nha Trang or Adelaide Better for Scuba Diving and Snorkeling?

Nha Trang
Adelaide

Nha Trang is a decent place to visit for the nearby scuba diving and snorkeling. However, Adelaide is not a scuba or snorkeling destination.

It's possible to go snorkeling in Nha Trang. Snorkeling is a bit tricky here, because you need to visit during the right season and you'll need to hop on a tour to get to the best spots. If you're lucky you'll have good visibility and see some interesting marine life.

Adelaide is not a scuba or snorkeling destination.

Is Nha Trang or Adelaide Better for Beaches?

Nha Trang
Adelaide

Adelaide is a great city for the beach. Also, Nha Trang is not as popular, but is still a nice city for the beach.

Many people visit Adelaide for it's beautiful beaches. Part of what makes the city's beaches so great is how accessible they are. You don't have to go far to be at some of the area's best beaches. Glenelg is a family-friendly beach near town. It's also the most popular and most accessible. Brighton is relaxed with cafes and small restaurants nearby. And for seafood, head to Henley.

Nha Trang is a good option for a beach vacation. The accessible beaches are very developed and filled with vacationers who are looking for fun activities. The sands are white and soft and the water is comfortable and fun to splash around in.

Is Nha Trang or Adelaide Better for Hiking?

Nha Trang
Adelaide

Adelaide is a good destination for hiking. However, Nha Trang is not a hiking destination.

Adelaide offers some nice hiking trails. Outside of town there are national parks and reserves with hiking trails. You don't have to go far to explore the coastline or bushland in the area.

Nha Trang is not a hiking destination.


Is the Shopping Better in Nha Trang or Adelaide?

Nha Trang
Adelaide

Adelaide is a great city for its shopping opportunities. Also, Nha Trang is not as popular, but is still a nice city for its shopping areas.

Adelaide is well-known for its shopping. Rundle Mall is the most well known shopping area in town. You'll find boutique shops as well as large department stores. Whether you're looking for international fashion brands or something more local, there are many places to explore.

Many visitors go to Nha Trang to go shopping. There are some local street markets that are fun to explore. There are also the typical shops and supermarkets that sell local produce, souvenirs, and any other essentials that you may have forgotten.

Is Nha Trang or Adelaide Better for Families?

Nha Trang
Adelaide

Nha Trang is a very popular place for its kid-friendly activities. Also, Adelaide is not quite as popular, but is fairly good for its family-friendly activities.

Nha Trang is a very family-friendly destination. While it is known among the backpacker crowds for its party scene, there are also great beaches and many activities for families. Vinpearl Land is an amusement park in the area that has rides and shows. There's also Po Nagar Cham Towers and Long Son Pagoda, which are both interesting to visit. The beaches also make a great playground for kids who enjoy building sand castles and playing in the shallow water.

You'll find plenty of kid-friendly things to do in Adelaide. There are kids museums, water parks, playgrounds, and beaches that are fun to explore with children. The city has a family-friendly vibe with kid-friendly restaurants and a welcoming personality.

Is Nha Trang or Adelaide Better for Couples?

Nha Trang
Adelaide

Nha Trang is a very popular place for romance. Also, Adelaide is not quite as popular, but is fairly good for its romantic activities.

Nha Trang makes for a fun place to visit for a couple. There are several romantic hotels near the beach as well as some interesting cultural activities and beautiful beaches with water activities.

Adelaide makes for a fun place to visit for a couple. A great date activity is a night at the opera. There are also boat rides, hot air balloon rides, and nice restaurants that make for a fun evening out.


Is Nha Trang or Adelaide Better for Backpackers and Budget Travelers?

Nha Trang
Adelaide

Nha Trang is a very popular place for backpackers and budget travelers. Also, Adelaide is not quite as popular, but is fairly good for backpackers.

Nha Trang is very popular with the backpacker crowd. Backpackers looking for a party head to the streets around Biệt Thự Street. There are many cheap hostels and guesthouses in the area, and you won't be far from the area's best nightlife.

Plenty of backpackers visit Adelaide. It's not high on the list for many backpackers, but those who venture here will enjoy a great wine scene, beautiful beaches, and lively festivals.

Is Nha Trang or Adelaide Better for Students?

Nha Trang
Adelaide

Adelaide is a good destination for its student-friendly activities. However, Nha Trang is not popular with students.

It's common for students to visit Adelaide. It's a friendly and affordable city that has a nice student culture. It's very livable and accessible to other interesting places.

Nha Trang is not popular with students.

Is Nha Trang or Adelaide Better for Public Transit? Which Is Easier to Get Around Without a Car?

Nha Trang
Adelaide

Adelaide is a great city for times when you don't have a car. Also, Nha Trang is not as popular, but is still a nice city for its public transit.

Public transit in Adelaide can get you to some places easily. There are bus, trains, and trams throughout the city center.

Nha Trang has a few public transit options. There are six city bus routes. There are also many taxis and motorbike taxes available for reasonable rates.


Is Nha Trang or Adelaide a more walkable city?

Nha Trang
Adelaide

Nha Trang and Adelaide are very good when it comes to walkability.

Nha Trang is a very walkable city. The city is compact enough that you can explore many parts on foot. Most of the attractions are near the intersection of Tran Phu and Biet Thu.

Adelaide is a very walkable destination. The city is compact and laid out in a grid pattern, so it's easy to explore on foot.

For even more information, also check out Is Nha Trang Worth Visiting? and Is Adelaide Worth Visiting?.

Should I spend more time in Adelaide or Nha Trang?

How long in Nha Trang or Adelaide?

It's fun to spend time in either Nha Trang or Adelaide. Generally, people tend to spend more time in Adelaide due to the larger number of activities and things to do. Usually, 2-3 days is a good amount of time for Nha Trang, and 2-4 days is enough time in Adelaide.

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

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

Backpackers and budget travelers should spend more time in Nha Trang than Adelaide 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 Nha Trang.


  • How many days in Nha Trang or Adelaide? Ideal Length of Stay
    Nha Trang 2-3 
    Adelaide 2-4

One day in Nha Trang or Adelaide?

The city of Nha Trang offers food and shopping. With so much to do, one day is probably not enough time to see everything. It will give you the chance to have new experiences.

You'll find shopping and museums around the city of Adelaide. Many visitors spend time at the beach while visiting the area. 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.

A weekend in Nha Trang or Adelaide?

Nha Trang is a popular place that is full of things to see and experience. If you have a weekend, this city makes for a great vacation. While some people choose to spend more or less time in Nha Trang, a weekend is sufficent for most. Take your pick from the many activities offered here.

You'll find museums and nightlife around the welcoming destination of Adelaide. People usually spend lots of time at the beach. This is a popular place to visit for a weekend.A weekend should give you a good understanding of everything this city has to offer. This city offers a variety of activities to choose from.


Five days in Nha Trang or Adelaide?

Nha Trang is a popular choice for travelers. It's no surprise that nightlife is why people visit. Five days 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. The entire region has so many activities, and you'll want time to do everything.

Travelers enjoy the nightlife and food when visiting the under-rated city of Adelaide. The length of your ideal trip is an individual decision. It's also a great beach destination, too. Five days is plenty of time to see everything, even with extra days to spare.

A week in Nha Trang or Adelaide?

Nha Trang is a great place to explore. It's no surprise that nightlife is why people visit. One week is more than enough time to enjoy everything. Take some day trips to nearby places to fill the extra days. This city offers something for everyone.

Adelaide is a popular choice for travelers. It's a great spot for a beach vacation. 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.


For some great organized tour ideas, see The Best Coach Bus Tours in Vietnam, The Best Adventure Tours to Vietnam, The Best Adventure Tours to Australia, and Tours for Outdoor and Nature Lovers in Australia.


Which place is cheaper, Adelaide or Nha Trang?

These are the overall average travel costs for the two destinations. These travel costs come from the actual spending of real travelers.

The average daily cost (per person) in Nha Trang is $48, while the average daily cost in Adelaide is $133. 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 Nha Trang and Adelaide in more detail.



Accommodation
  • Accommodation Hotel or hostel for one person
    Nha Trang $13
    Adelaide $65
  • Accommodation Typical double-occupancy room
    Nha Trang $26
    Adelaide $130
Compare Hotels in Nha Trang and Adelaide

Looking for a hotel in Nha Trang or Adelaide? 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 Nha Trang


Hotels in Adelaide


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: Nha Trang Hotel Prices and Adelaide Hotel Prices.

Local Transportation
  • Local Transportation Taxis, local buses, subway, etc.
    Nha Trang $13
    Adelaide $18
Typical Local Transportation Prices in Nha Trang

Below are a few samples from actual travelers for transportation costs in Nha Trang:


  • Local Bus Ticket
    $0.11
  • Taxi From Airport
    $14

Hired Cars and Shuttles in Nha Trang

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

  • Dalat to Nha Trang Private Car Transfer: $54

Typical Local Transportation Prices in Adelaide

Some typical examples of transportation costs in Adelaide are as follows:


  • Shuttle from the Train Station
    $3.60

Hired Cars and Shuttles in Adelaide

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

  • Private Airport & Houseboat Transfers Adelaide Bus: $297
  • ADL Airport to City Centre | Port Private Transfer: $35

Is it cheaper to fly into Nha Trang or Adelaide?

Prices for flights to both Adelaide and Nha Trang 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
    Nha Trang $25
    Adelaide $54
Typical Food Prices in Nha Trang

Here are some examples of typical meal expenses from previous travelers to Nha Trang:


  • Casual Lunch (for Two)
    $5.31

Food Tours and Cooking Classes in Adelaide

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

  • HandleBar Bike Tour with Pub Stops & Dinner Option: $30
  • Local Food Tour and Tastings with Guide: $65

Entertainment
  • Entertainment Entrance tickets, shows, etc.
    Nha Trang $9.03
    Adelaide $14
Typical Entertainment Prices in Nha Trang

For Nha Trang, here are some examples of average entertainment and activity prices from previous travelers:


  • Po Ngar Cham Entrance (for Two)
    $1.21
  • Two Rental Lounge Chairs on Beach
    $2.65
  • Vinpearl Land Amusement Park
    $17
  • Fairy Spring Waterfall Entrance
    $0.38
  • Thap Ba Mud Bath
    $3.79
  • Cyclo Tour of City (One Day)
    $9.48

Tours and Activities in Nha Trang

Also, here are some specific examples of entertainment, tickets, and activities for Nha Trang.

  • Hoi An Impression Theme Park and Memories Show Tickets: $25

Tours and Activities in Adelaide

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

  • "Barossa Tour from 4 Tastings & Lunch Included": $109
  • 90 Minute Port River Dolphin & Ships Graveyard Cruise: $59
  • Adelaide Central Market Tour with Lunch: $122
  • Adelaide Central Markets: Food Walking Tour: $45
  • Adelaide City Highlights Full-Day Tour: $152
  • Adelaide City Highlights Tour: $58
  • Adelaide City Highlights via Hahndorf Half-Day Tour: $107
  • Adelaide City Highlights- Hahndorf and Mt. Lofty Half-Day Tour: $87
  • Adelaide City and First Nations Cultural tour: $98
  • Adelaide City and Hahndorf Full Day Tour: $127
  • Adelaide Cruise Ship Tours: $208
  • Adelaide Cruise Ship Tours to Hahndorf & Hills Wildlife Wonders: $245

Alcohol
  • Alcohol Drinks for one day
    Nha Trang $18
    Adelaide $22

Sample the Local Flavors in Adelaide

Some specific costs for nightlife related activities in Adelaide:

  • Half-day McLaren Vale & Glenelg Wine Tasting Tour: $59
  • McLaren Vale and Glenelg Wine Tasting and Sightseeing (Half-day Afternoon): $60
  • Highlights, Hahndorf & McLaren Vale Wine Tasting: $89
  • Adelaide Highlights, Hahndorf & McLaren Vale Wine Tasting and Sightseeing Tour: $91
  • Barossa Day Out: Wines, Brewery, Chocolate & Lunch: $105
  • Discover Barossa: 4 Wine Tastings, Gourmet Lunch, and Hidden Gems: $111
  • From Barossa Valley Food and Wine Tour: $118
  • From Barossa Valley Full-Day Wine Tasting Tour: $118
  • Barossa Premium Wine Tasting tour & Winery Lunch: $118
  • Barossa Premium Wine Tasting Tour & lunch Departs 7 days a week : $120
  • Barossa Valley Full-Day Wine Tasting & Maggie Beers Farm Join Us: $120
  • Barossa Valley Gin & Wine Tour: $138


When we compare the travel costs of actual travelers between Nha Trang and Adelaide, we can see that Adelaide is more expensive. And not only is Nha Trang much less expensive, but it is actually a significantly cheaper destination. Since Nha Trang is in Asia and Adelaide is in Pacific, this is one of the main reasons why the costs are so different, as different regions of the world tend to have overall different travel costs. So, traveling to Nha Trang would let you spend less money overall. Or, you could decide to spend more money in Nha Trang 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 Adelaide would naturally cost you much more money, so you would probably want to keep your budget a little tighter in Adelaide than you might in Nha Trang.

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


Which is Bigger, Nha Trang or Adelaide?

Adelaide has a larger population, and is about 4 times larger than the population of Nha Trang. When comparing the sizes of Nha Trang and Adelaide, 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 Nha Trang or Adelaide?

Adelaide has a temperate climate with four distinct seasons, but Nha Trang experiences a warm climate with fairly sunny weather most of the year.

Should I visit Nha Trang or Adelaide in the Summer?

The summer attracts plenty of travelers to both Nha Trang and Adelaide. Warm weather and sunshine bring visitors to Nha Trang year-round. Also, the summer months attract visitors to Adelaide because of the beaches, the hiking, and the family-friendly experiences.

In July, Nha Trang is generally a little warmer than Adelaidein January. Daily temperatures in Nha Trang average around 28°C (82°F), and Adelaide fluctuates around 22°C (72°F).

In July, Nha Trang usually receives more rain than Adelaidein January. Nha Trang gets 30 mm (1.2 in) of rain, while Adelaide receives 19 mm (0.7 in) of rain each month for the summer. January to August in Nha Trang is the dry season. Also, September to December is the rainy season in Nha Trang.


  • Summer Average Temperatures July and January
    Nha Trang 28°C (82°F) 
    Adelaide 22°C (72°F)

Should I visit Nha Trang or Adelaide in the Autumn?

The autumn brings many poeple to Nha Trang as well as Adelaide. Nha Trang attracts visitors year-round for its warm weather and sunny climate. Also, the hiking trails and the shopping scene are the main draw to Adelaide this time of year.

Nha Trang is a little warmer than Adelaide in the autumn. The daily temperature in Nha Trang averages around 26°C (79°F) in October, and Adelaide fluctuates around 18°C (64°F)in April.

Nha Trang receives a lot of rain in the autumn. Nha Trang usually gets more rain in October than Adelaidein April. Nha Trang gets 240 mm (9.4 in) of rain, while Adelaide receives 38 mm (1.5 in) of rain this time of the year. September to December in Nha Trang is the rainy season.


  • Autumn Average Temperatures October and April
    Nha Trang 26°C (79°F) 
    Adelaide 18°C (64°F)

Should I visit Nha Trang or Adelaide in the Winter?

Both Adelaide and Nha Trang are popular destinations to visit in the winter with plenty of activities. The warm climate attracts visitors to Nha Trang throughout the year. Also, many travelers come to Adelaide for the museums, the shopping scene, and the cuisine.

In the winter, Nha Trang is much warmer than Adelaide. Typically, the winter temperatures in Nha Trang in January average around 24°C (75°F), and Adelaide averages at about 11°C (52°F)in July.

In January, Nha Trang usually receives less rain than Adelaidein July. Nha Trang gets 40 mm (1.6 in) of rain, while Adelaide receives 67 mm (2.6 in) of rain each month for the winter. The dry season in Nha Trang is January to August.


  • Winter Average Temperatures January and July
    Nha Trang 24°C (75°F) 
    Adelaide 11°C (52°F)

Should I visit Nha Trang or Adelaide in the Spring?

Both Adelaide and Nha Trang during the spring are popular places to visit. Plenty of visitors come to Nha Trang because of the warm climate and sunshine that lasts throughout the year. Furthermore, many visitors come to Adelaide in the spring for the beaches.

In April, Nha Trang is generally much warmer than Adelaidein October. Daily temperatures in Nha Trang average around 26°C (79°F), and Adelaide fluctuates around 16°C (61°F).

Nha Trang usually gets more rain in April than Adelaidein October. Nha Trang gets 40 mm (1.6 in) of rain, while Adelaide receives 37 mm (1.5 in) of rain this time of the year.


  • Spring Average Temperatures April and October
    Nha Trang 26°C (79°F) 
    Adelaide 16°C (61°F)

Typical Weather for Adelaide and Nha Trang

Nha Trang Adelaide
Temp (°C) Rain (mm) Temp (°C) Rain (mm)
Jan 24°C (75°F) 40 mm (1.6 in) 22°C (72°F) 19 mm (0.7 in)
Feb 24°C (75°F) 10 mm (0.4 in) 23°C (73°F) 20 mm (0.8 in)
Mar 25°C (77°F) 20 mm (0.8 in) 21°C (69°F) 22 mm (0.9 in)
Apr 26°C (79°F) 40 mm (1.6 in) 18°C (64°F) 38 mm (1.5 in)
May 29°C (84°F) 50 mm (2 in) 15°C (58°F) 57 mm (2.2 in)
Jun 27°C (81°F) 50 mm (2 in) 12°C (54°F) 50 mm (2 in)
Jul 28°C (82°F) 30 mm (1.2 in) 11°C (52°F) 67 mm (2.6 in)
Aug 28°C (82°F) 40 mm (1.6 in) 12°C (54°F) 51 mm (2 in)
Sep 27°C (81°F) 150 mm (5.9 in) 13°C (56°F) 40 mm (1.6 in)
Oct 26°C (79°F) 240 mm (9.4 in) 16°C (61°F) 37 mm (1.5 in)
Nov 25°C (77°F) 240 mm (9.4 in) 18°C (65°F) 22 mm (0.9 in)
Dec 24°C (75°F) 170 mm (6.7 in) 21°C (69°F) 25 mm (1 in)