A Travel Price Comparison for United States of America Greensboro vs. Oahu for Families, Couples, Attractions, and Nightlife

Should you visit Greensboro or Oahu?

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 Greensboro and Oahu. 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.

Greensboro

Greensboro is a friendly, welcoming, and under-rated city. Visitors also love the shopping, museums, and nightlife.

Oahu

Oahu is a cosmopolitan, scenic, and historic island. It's a large city, so you'll find plenty of things to do around town. The famous beauty of this place is one of the main draws. And you can't forget about the beaches, hiking, and shopping.

Greensboro and Oahu: Pros and Cons

Pros
  • Popular museums and historical sights
  • Active nightlife
  • Good for students
Things to Consider
  • Less family-friendly
  • Less popular with couples
  • Less popular with backpackers
Pros
  • Popular museums and historical sights
  • Active nightlife
  • Good music scene
  • Nice resorts
  • Good scuba and snorkeling destination
  • Popular beach
  • Good for hiking
  • Family-friendly
  • Good for couples and romance
  • Good for backpackers and budget travelers
  • Impressive beauty
  • Home to Pearl Harbor and the USS Arizona Memorial


Is there more to do in Greensboro or Oahu?

Visitors will usually find more to do in Oahu than Greensboro, as it offers more sights, attractions, and activities. Oahu is more touristy than Greensboro and is popular for its unique blend of cultures, stunning beaches, vibrant energy, and world class water sports (including surfing). Also, Oahu is famous for Pearl Harbor and the USS Arizona Memorial. Greensboro is well known for its interesting museums and diverse restaurants.

How is Greensboro different from Oahu?

Which is Better for a Holiday?

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

Are the Museums and Historical Sights Better in Greensboro or Oahu?

Greensboro
Oahu

Oahu is well known for its museums and landmarks. Also, Greensboro is still popular, but not quite as popular for its historical sights.

Visitors can fill many days exploring the museums and attractions around Oahu. The USS Arizona Memorial & Pearl Harbor is a moving and special place to visit, but tickets should be purchased in advance. Other landmarks around the island include the Tour Iolani Palace and the Battleship Missouri Memorial.

If you're looking for an educational opportunity, there are a decent number of museums and historical sights around Greensboro. The Greensboro Science Center is a highlight for families. Other interesting museums around town include the Elsewhere Modern Art Museum, the Greensboro History Museum, the International Civil Rights Center, and the Weatherspoon Art Museum.


Is the Food Better in Greensboro or Oahu? Which Destination has the Best Restaurants?

Greensboro
Oahu

Oahu is a good destination for its restaurant scene. However, Greensboro is not particularly known for its local flavors and cuisine.

Visitors will find a budding food and restaurant scene in Oahu. Honolulu has a diversity of cuisines and a cosmopolitan vibe, giving it some of the best food in the Hawaiian Islands. The local restaurants are influenced by a number of countries and often incorporate Japanese, Chinese, Filipino, Korean, and Portuguese flavors. Dishes are often saucy, sweet, and starchy, but you'll also find fresh tropical fruits such as mango and coconut.

Greensboro may not make the list for most foodies, but you'll find what you need while you're in town. You'll find a good selection of restaurants around town with Mexican, southern, Italian, and Chinese all being popular options.

Is Greensboro or Oahu Better for Nightlife?

Greensboro
Oahu

Oahu is well known for nightlife and partying. Also, Greensboro is still popular, but not quite as popular for its evening party scene.

Oahu is a popular destination for visitors looking to party into the night. Honolulu, and Oahu, have some of the best nightlife in the Hawaiian islands. There are tiki bars and posh nightclubs that keep buzzing late into the night. Head to Waikiki for some of the island's best nightlife. In Honolulu you'll find some local bars and clubs, but many resorts also offer a great nightlife scene and a fun atmosphere that caters specifically to tourists.

If you're looking for night time activities Greensboro has a few options to choose from. Head downtown for the most trendy bars, breweries, and nightclubs.

Is Greensboro or Oahu Better for Music?

Greensboro
Oahu

Oahu is a island with a few options for its live music scene. However, Greensboro is not a live music destination.

For those who seek it out, Oahu has several music venues. There are a few good venues that offer live music on Oahu.

Greensboro is not a live music destination.


Is Greensboro or Oahu Better for Resorts?

Greensboro
Oahu

Oahu is well known for its resorts. However, Greensboro is not a resort destination.

There are plenty of resorts in Oahu to choose from. The island has a diversity of resorts, from luxury 5 star accommodation to family-friendly resorts that are fun for all ages. Ko Olina is where you'll find Aulani, the Disney Resort. Waikiki is one of the most famous tourist areas on the island and you'll find high rise hotels and condos along the beach.

Greensboro is not a resort destination.

Is Greensboro or Oahu Better for Scuba Diving and Snorkeling?

Greensboro
Oahu

Oahu is well known for its diving and snorkeling. However, Greensboro is not a scuba or snorkeling destination.

There are many scuba diving and snorkeling spots near Oahu. Snorkeling and diving on the island is among the best in the world. There are 3 marine life conservation parks and miles of coastline to explore.

Greensboro is not a scuba or snorkeling destination.

Is Greensboro or Oahu Better for Beaches?

Greensboro
Oahu

Oahu is a must-visit destination for the beache. However, Greensboro is not a beach destination.

Oahu offers stunning beaches that attract visitors from around the world. From the energetic Waikiki Beach to the family-friendly Ko Olina, Oahu has some of the most famous beaches in the world. The beaches are lined with sand and some areas offer better swimming conditions than others. You'll also find beaches with snorkeling or sea turtles, and some with world class surfing waves.

Greensboro is not a beach destination.


Is Greensboro or Oahu Better for Hiking?

Greensboro
Oahu

Oahu is a must-visit destination for its hiking experiences. However, Greensboro is not a hiking destination.

Oahu is well-known for its hiking and trekking. World famous hikes on the island include Diamond Head and Koko Crater Railroad Trailhead. There are hikes ranging from easy to challenging and views that will take your breath away.

Greensboro is not a hiking destination.

Is the Shopping Better in Greensboro or Oahu?

Greensboro
Oahu

Oahu is well known for its shopping opportunities. Also, Greensboro is still popular, but not quite as popular for its shopping areas.

Oahu is a popular shopping destination with plenty of stores. There are shopping centers and malls in Honolulu that have major department stores as well as island favorites. For a local experience head to the Aloha Stadium Swap Meet or wander along the Waikiki Beach Walk with its many boutique shops. Also worth a visit is the Honolulu Chinatown market.

Greensboro has a variety of shopping areas worth visiting. There are shopping centers and shopping malls around town as well as some interesting local boutiques.

Is Greensboro or Oahu Better for Families?

Greensboro
Oahu

Oahu is a must-visit destination for its family-friendly activities. Also, Greensboro is still popular, but not quite as popular for its kid-friendly activities.

With a huge array of activities for kids, Oahu is very family-friendly. There are plenty of outdoor activities, places to learn about Hawaiian culture, and world class beaches. The most popular family-friendly area is Ko Olina, which is where you'll find the Disney Resort, Aulani. Kids will also enjoy the area's snorkeling and kayaking. Surfing lessons are a fun activity for the whole family as well.

Greensboro offers lots of family activities. Kids will love visiting the Greensboro Science Center, which has hands-on science exhibits and a small zoo. Younger kids will also enjoy a visit to the Miriam P. Brenner Children’s Museum. During the summer months the Wet 'n Wild Emerald Pointe Water Park is a great way to spend a day. Other times of the year, there are indoor play spaces and movie theaters around town.


Is Greensboro or Oahu Better for Couples?

Greensboro
Oahu

Oahu is a must-visit destination for its romantic activities. However, Greensboro is not particularly known for couples.

Oahu is fantastic couple's destination with fun and romantic activities. The island offers a beautiful and adventurous honeymoon destination that is perfect for anniversaries and other romantic getaways. It's an island paradise with world class beaches, stunning vistas, and countless water sports.

Greensboro is not always the best place to visit for a couple. The Carolina Theater makes a great date night activity. There is also a diverse selection of restaurants around town and a few parks for a daytime outing.

Is Greensboro or Oahu Better for Backpackers and Budget Travelers?

Greensboro
Oahu

Oahu is a good destination for backpackers. However, Greensboro is not particularly known for backpackers and budget travelers.

Plenty of backpackers visit Oahu. There are a couple of hostels on the island. Public transportation is also a bit better than the other islands, so it is one of the better Hawaiian islands for backpackers.

Greensboro is a challenging destination for budget travelers and backpackers due to the higher prices. There are a number of budget hotels nearby but no real hostels.

Is Greensboro or Oahu Better for Students?

Greensboro
Oahu

Greensboro is a nice place to visit for its student-friendly activities. However, Oahu is not popular with students.

Plenty of students visit Greensboro. University of North Carolina at Greensboro attracts students to the city. There are also several smaller colleges in the area.

Oahu is not popular with students.


Is Greensboro or Oahu Better for Public Transit? Which Is Easier to Get Around Without a Car?

Greensboro
Oahu

You'll find somewhat comparable public transit options in both Greensboro and Oahu.

Public transit is generally limited in Greensboro. There are several bus routes around town, but you really can depend on them to get where you're going. A car is important for making the most of your trip.

Public transit is mostly limited in Oahu. Honolulu has a fairly good bus system, but once you're out of the city, public transportation is limited.

Is Greensboro or Oahu a more walkable city?

Greensboro
Oahu

Greensboro and Oahu both are respectable when exploring on foot.

Greensboro is generally not very walkable. Most areas aren't walkable, but for the most pedestrian-friendly sections head to College Hill, downtown, or Brice Street.

Oahu is generally not a very walkable city. There are some walkable neighborhoods in Honolulu, but if you really want to explore the island, you'll want to have a car.

For even more information, also check out Is Greensboro Worth Visiting? and Is Oahu Worth Visiting?.

Should I spend more time in Oahu or Greensboro?

How long in Greensboro or Oahu?

Both Greensboro and Oahu have a number of activities to choose from. With generally more activities and things to do, visitors tend to spend more time in Oahu than in Greensboro. Usually, 1-2 days is a good amount of time for Greensboro, and 3-7 days is enough time in Oahu.

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

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

Backpackers and budget travelers should spend more time in Oahu than Greensboro 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 Oahu.


  • How many days in Greensboro or Oahu? Ideal Length of Stay
    Greensboro 1-2 
    Oahu 3-7

One day in Greensboro or Oahu?

Visitors enjoy the museums and nightlife when visiting the destination of Greensboro. Take your pick from the many activities offered here. One day is usually enough time to experience most activities.

With food and scuba diving and snorkeling around the vibrant island of Oahu, there's plenty to do. Anyone can find something fun to do here. Make sure you spend some time hiking while you're in the area. But since there are so many activities, you'll likely want to spend more than one day exploring.


A weekend in Greensboro or Oahu?

Greensboro is a fun place to experience. If you have a weekend, this is a great place to go. A weekend is often enough time to do most activities. The entire region has so many activities, and you'll want time to do everything.

With scuba diving and snorkeling and shopping around the destination of Oahu, there's plenty to do. Travelers enjoy the resorts in the area as well. It offers something for everyone. With so much to do, a weekend is probably not enough time to see everything.

Five days in Greensboro or Oahu?

You'll find shopping and museums around the friendly destination of Greensboro. This city offers something for everyone. Five days is plenty of time to see everything, even with extra days to spare.

Oahu, a popular island, is full of activities for travelers. This is a popular place to visit for five days. Hiking can easily take up a good amount of your time here, too. In five days, you should have a good grasp of this island. Your budget might influence how long you stay.

A week in Greensboro or Oahu?

The welcoming city of Greensboro offers museums and nightlife. The length of your trip often depends on your style of travel. 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.

Oahu is a popular place that is full of things to see and experience. If you have one week, this island makes for a great vacation. One week should give you a good understanding of everything this island has to offer. It has many unique tourist attractions and fascinating things to do.


For some great organized tour ideas, see The Best Photography Tours in United States of America, The Best Camping Tours in United States of America, The Best Romantic Tours for Couples in United States of America, and The Best Polar Tours & Cruises in United States of America.


Which place is cheaper, Oahu or Greensboro?

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

The average daily cost (per person) in Greensboro is $162, while the average daily cost in Oahu is $333. 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 Greensboro and Oahu in more detail.



Accommodation
  • Accommodation Hotel or hostel for one person
    Greensboro $96
    Oahu $237
  • Accommodation Typical double-occupancy room
    Greensboro $192
    Oahu $474
Compare Hotels in Greensboro and Oahu

Looking for a hotel in Greensboro or Oahu? 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 Greensboro


Hotels in Oahu


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: Greensboro Hotel Prices and Oahu Hotel Prices.

Local Transportation
  • Local Transportation Taxis, local buses, subway, etc.
    Greensboro $24
    Oahu $21

Hired Cars and Shuttles in Oahu

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

  • Departure Transfer: Airport Shuttle From Ko'olina To Honolulu Airport: $53
  • Honolulu / Waikiki to Honolulu Airport (HNL) - Departure Private Transfer: $46
  • Honolulu / Waikiki to Honolulu Airport (HNL) - Departure Transfer: $50
  • Honolulu Airport & Ko Olina Hotels Private Transfer by Passenger Van(14 ppl): $170
  • Honolulu Airport (HNL) to Honolulu / Waikiki - Round-Trip Private Transfer : $92
  • Luxury Private Airport Transfers to Waikiki Honolulu - Up to 4 Seats : $62
  • Luxury Transfer Between Ko Olina and Honolulu Airport, Vice Versa: $192
  • Airport 1-Way Transfer to Honolulu: $60
  • Full-Day Island Highlights Tour with Transfer: $136
  • Honolulu Airport Private Transfer: $70
  • Honolulu Harbor Cruise Terminal Transfer: $105
  • Ko Olina or Kapolei to Airport Private Transfer: $100

Is it cheaper to fly into Greensboro or Oahu?

Prices for flights to both Oahu and Greensboro 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
    Greensboro $48
    Oahu $52

Food Tours and Cooking Classes in Oahu

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

  • Lunchtime Walking Food Tour in Honolulu: $99
  • Moonlight Dinner Cruise in Honolulu: $106
  • Sunset Dinner Cruise in Honolulu: $125
  • Honolulu Sunset & Fireworks Dinner Cruise: $129
  • Ka Moana Luau Dinner and Show at Aloha Tower: $129
  • Hawaii Semisub Classic Friday Fireworks Dinner Cruise: $170
  • Hawaiian Food Tour by Bike in Oahu: $179
  • Germaine's Traditional Luau Show & Buffet Dinner: $191
  • Friday Fireworks Dinner Sail from the Hilton Hawaiian Village : $211
  • Nova Five Star Sunset Dinner and Jazz: $225
  • Traditional Canoe Sunset Cruise with Dinner: $250
  • Private Sunset Dinner Horseback Ride: $251

Entertainment
  • Entertainment Entrance tickets, shows, etc.
    Greensboro $26
    Oahu $27

Tours and Activities in Greensboro

Here are a few actual costs in Greensboro for available activities, ticket prices, and tours:

  • African American History Walking Tour: $16
  • Downtown Historic Walking Tour: $16
  • True Crime Tour: $16

Tours and Activities in Oahu

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

  • Honolulu Downtown Walking Tour: $5.00
  • Diamond Head Hiking Narrated Tour: $5.00
  • Walk The Deck of The USS Arizona Virtual Reality Tour: $5.99
  • Pearl Harbor Virtual Reality Center Tour: $6.99
  • Historic Honolulu Smartphone Audio Walking Tour: $7.30
  • Official USS Arizona Memorial Narrated Audio Tour: $7.99
  • Honolulu Historic District a Smartphone Audio Walking Tour: $7.99
  • USS Arizona Memorial Narrated Chief'sTour: $7.99
  • GPS-Guided Waikiki Walking Tour Part 1: Hawaiian Royalty: $7.99
  • Waikiki Military and Entertainment History GPS-Led Walking Tour: $7.99
  • Historic Downtown Honolulu GPS-Led Self-Guided Walking Tour: $7.99
  • Commander's 1-Hour Official Pearl Harbor Narrated Multimedia Tour: $9.99

Alcohol
  • Alcohol Drinks for one day
    Greensboro $20
    Oahu $6.47

Sample the Local Flavors in Oahu

Also in Oahu, these are the prices for nightlife and alcohol related activities from various tour providers:

  • Whiskey Tour - Koʻolau Distillery - Kailua, Hawai'i 96734: $25
  • Honolulu Haunts Ghost Tours And Pub Crawls: $30
  • WINERY OENO Island Style Wine Tasting: $39
  • History Tour Pub Crawl in Waikiki: $45
  • Waikiki History Tour Pub Crawl: $45


When we compare the travel costs of actual travelers between Greensboro and Oahu, we can see that Oahu is more expensive. And not only is Greensboro much less expensive, but it is actually a significantly cheaper destination. So, traveling to Greensboro would let you spend less money overall. Or, you could decide to spend more money in Greensboro 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 Oahu would naturally cost you much more money, so you would probably want to keep your budget a little tighter in Oahu than you might in Greensboro.

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



When is the best time to visit Greensboro or Oahu?

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 Greensboro or Oahu in the Summer?

The summer brings many poeple to Greensboro as well as Oahu. Many visitors come to Greensboro in the summer for the family-friendly experiences. Additionally, most visitors come to Oahu for the beaches, snorkeling, the hiking, the city activities, the music scene, and the family-friendly experiences during these months.

Greensboro is around the same temperature as Oahu in the summer. The daily temperature in Greensboro averages around 81°F (27°C) in July, and Oahu fluctuates around 81°F (27°C).

The sun comes out a lot this time of the year in Oahu. People are often attracted to the plentiful sunshine in Greensboro this time of the year. In the summer, Greensboro often gets less sunshine than Oahu. Greensboro gets 273 hours of sunny skies this time of year, while Oahu receives 303 hours of full sun.

Greensboro receives a lot of rain in the summer. Greensboro usually gets more rain in July than Oahu. Greensboro gets 4.4 inches (112 mm) of rain, while Oahu receives 0.6 inches (15 mm) of rain this time of the year.


  • Summer Average Temperatures July
    Greensboro 81°F (27°C) 
    Oahu 81°F (27°C)

Should I visit Greensboro or Oahu in the Autumn?

Both Oahu and Greensboro are popular destinations to visit in the autumn with plenty of activities. Most visitors come to Greensboro for the shopping scene during these months. Also, the autumn months attract visitors to Oahu because of the hiking trails, the city's sights and attractions, the shopping scene, the music scene, and the natural beauty of the area.

In the autumn, Greensboro is much colder than Oahu. Typically, the autumn temperatures in Greensboro in October average around 62°F (17°C), and Oahu averages at about 80°F (26°C).

It's quite sunny in Oahu. The sun comes out a lot this time of the year in Greensboro. Greensboro usually receives less sunshine than Oahu during autumn. Greensboro gets 212 hours of sunny skies, while Oahu receives 246 hours of full sun in the autumn.

In October, Greensboro usually receives more rain than Oahu. Greensboro gets 3 inches (75 mm) of rain, while Oahu receives 2.1 inches (54 mm) of rain each month for the autumn.


  • Autumn Average Temperatures October
    Greensboro 62°F (17°C) 
    Oahu 80°F (26°C)

Should I visit Greensboro or Oahu in the Winter?

Both Oahu and Greensboro during the winter are popular places to visit. The winter months attract visitors to Greensboro because of the museums, the shopping scene, and the cuisine. Also, the museums, the shopping scene, and the cuisine are the main draw to Oahu this time of year.

The weather in Greensboro can be very cold. In January, Greensboro is generally much colder than Oahu. Daily temperatures in Greensboro average around 40°F (4°C), and Oahu fluctuates around 73°F (23°C).

In Oahu, it's very sunny this time of the year. In the winter, Greensboro often gets less sunshine than Oahu. Greensboro gets 169 hours of sunny skies this time of year, while Oahu receives 212 hours of full sun.

Greensboro usually gets less rain in January than Oahu. Greensboro gets 3.2 inches (82 mm) of rain, while Oahu receives 3.9 inches (99 mm) of rain this time of the year.


  • Winter Average Temperatures January
    Greensboro 40°F (4°C) 
    Oahu 73°F (23°C)

Should I visit Greensboro or Oahu in the Spring?

The spring attracts plenty of travelers to both Greensboro and Oahu. Also, many travelers come to Oahu for the beaches, the activities around the city, and the natural beauty.

Greensboro is much colder than Oahu in the spring. The daily temperature in Greensboro averages around 61°F (16°C) in April, and Oahu fluctuates around 76°F (24°C).

People are often attracted to the plentiful sunshine in Oahu this time of the year. In Greensboro, it's very sunny this time of the year. Greensboro usually receives around the same amount of sunshine as Oahu during spring. Greensboro gets 248 hours of sunny skies, while Oahu receives 253 hours of full sun in the spring.

In April, Greensboro usually receives more rain than Oahu. Greensboro gets 3.1 inches (80 mm) of rain, while Oahu receives 1.7 inches (42 mm) of rain each month for the spring.


  • Spring Average Temperatures April
    Greensboro 61°F (16°C) 
    Oahu 76°F (24°C)

Typical Weather for Oahu and Greensboro

Greensboro Oahu
Temp (°C) Rain (mm) Temp (°C) Rain (mm)
Jan 40°F (4°C) 3.2 inches (82 mm) 73°F (23°C) 3.9 inches (99 mm)
Feb 43°F (6°C) 3.4 inches (86 mm) 73°F (23°C) 2.1 inches (53 mm)
Mar 52°F (11°C) 3.7 inches (94 mm) 74°F (24°C) 2.4 inches (61 mm)
Apr 61°F (16°C) 3.1 inches (80 mm) 76°F (24°C) 1.7 inches (42 mm)
May 69°F (21°C) 3 inches (77 mm) 78°F (25°C) 1.4 inches (35 mm)
Jun 77°F (25°C) 3.9 inches (99 mm) 80°F (26°C) 0.5 inches (12 mm)
Jul 81°F (27°C) 4.4 inches (112 mm) 81°F (27°C) 0.6 inches (15 mm)
Aug 80°F (26°C) 4.3 inches (109 mm) 81°F (27°C) 0.4 inches (11 mm)
Sep 73°F (23°C) 3.5 inches (90 mm) 81°F (27°C) 0.7 inches (19 mm)
Oct 62°F (17°C) 3 inches (75 mm) 80°F (26°C) 2.1 inches (54 mm)
Nov 53°F (12°C) 2.6 inches (67 mm) 77°F (25°C) 3.3 inches (84 mm)
Dec 44°F (7°C) 3.1 inches (80 mm) 74°F (23°C) 3.9 inches (98 mm)