Bed and Mattress Size Guide

Sleep helps to restore and heal the body. Good sleep is essential and when you aren’t sleeping well, your health takes a blow and you run yourself down. When you aren’t sleeping well and there's no external factors disrupting you, then you should ask yourself - is it my mattress? Your mattress might be too old, too cramped or too hot and might not suit you or the way that you sleep. At Sleepyhead, we believe mattress size plays a pivotal role in getting a good night's sleep and have created this handy mattress size guide to help you improve your sleep.

Not got enough time to give our guide a read? Take our quick 2 minute Sleep Selector quiz

Mattress Size Guide

Single Mattress Size

91cm x 188cm / 35.8″ x 74″

Everyone’s first mattress. One of our smallest beds available, the single sized mattress is great for your child or last minute guest needing a bed for the night.

Long Single Mattress Size

91cm x 203cm / 35.8″ x 79.9″

Long Single - Best value for growing kids. An ideal first bed that’s long lasting and built to fit your growing child. With a length of 203cm, the long single mattress size won’t be outgrown.

King Single Mattress Size

107cm x 203cm / 41.5″ x 79.9″

King Single - Perfect step up from a single. The perfect mattress for the prince or princess in your home. This bed is long enough for growing kids and wide enough to give them enough room to move around at night. The king single mattress size is also ideal for the guest room when you don’t have lots of space.

Double Mattress Size

137cm x 188cm / 53.9″ x 74″

Double Mattress - Great for tight spaces. A double is a great size to squeeze into a smaller room. With a shorter length than most beds but enough room to starfish, the double mattress is perfectly sized for your small guest room or teen needing a bit more space.

Long Double Mattress Size

137cm x 203cm / 53.9″ x 79.9″

Long Double Mattress - A generous size for an adult. A long double mattress is an ideal size for your growing teen or if you’re living on your own and don’t have the widest bedroom. This mattress size is also a great option for your spare room

Queen Mattress Size

153cm x 203cm / 60″ x 79.9″

Queen Mattress - the minimum choice for couples. The most popular mattress for couples, a queen size mattress fits in almost every bedroom and has just enough room for two.

King Mattress Size

167cm x 203cm / 65.7″ x 79.9″

King Mattress - for when the queen won’t do. A mattress built for royalty, the king sized mattress is roomy enough for couples to move around with less partner disturbance and even have a cat or two join them

Super King Mattress Size

183cm x 203cm / 72″ x 79.9″

Super King - get a lot more sleep space between you and your partner. A bed with extra legroom, the super king size mattress caters to couples that need a little extra space. Big enough for the family dog or a child needing cuddles.

California King Mattress Size

203cm x 203cm / 79.9″ x 79.9″

California King Mattress - for the largest mattress available on the market. Our biggest bed, the california king size mattress is big enough for the whole family! At over 2m wide, it's big enough for you, your partners, your kids and your fluffy friends! If you’ve got enough space in your bedroom, this is the ideal mattress size for growing families.

How to Measure Your Bedroom for a Bed

Ensure you get the best Sleepyhead bed experience by making sure your new mattress is the right fit for your bedroom and lifestyle. Whether it's a single size mattress or cali king, your bed size makes a huge difference. A bed that’s too big for the room will feel cramped and uncomfortable no matter what size mattress you’d prefer, so having one that fits your home will better fit your lifestyle. Got the right mattress size fit? Now it’s time to choose one.

Explore our mattress ranges

Standard Bed and Mattress Sizes

Your best bed size might suit you and the whole family but not suit your bedroom. When choosing your mattress size, you also need to consider the size of the room.

All of our mattresses are proudly hand made here in New Zealand. Because of this and the soft and compressible nature of the materials we use mattresses may vary 1-2cm from the size guide. Variation within this range is considered normal, with the measurements given in the size guide intended to be indicative.

Check out our mattress dimensions below:

NZ Mattress Size	Metric Mattress Measurements (Cm)	Imperial Mattress Measurements (Inches)
Single Mattress	91 x 188	35.8″ x 74″
Long Single Mattress	91 x 203	35.8″ x 79.9″
King Single Mattress	107 x 203	41.5″ x 79.9″
Double Mattress	137 x 188	53.9″ x 74″
Long Double Mattress	137 x 203	53.9″ x 79.9″
Queen Mattress	153 x 203	60″ x 79.9″
King Mattress	167 x 203	65.7″ x 79.9″
Super King Mattress	183 x 203	72″ x 79.9″
California King Mattress	203 x 203	79.9″ x 79.9″

Mattress Size Comparison Chart – What size mattress should I buy?

What is the best size mattress for you?
Finding the best sized mattress for you comes down to your height, weight and who you’re sharing your bed with. There are a few things to consider when thinking about which bed size to get so that everyone gets enough room in the bed.

How many loved ones will be sleeping with you – a partner, a child, a pet? Are they sleeping regularly with you?
How tall or heavy are you? What size is your regular sleeping partner?
Do you have kids or big fluffy friends who like to spend time in bed with you?

The Sleeper/s	Single	Long Single	King Single	Double	Long Double	Queen	King	Super King	California King
A Child	★☆☆	★★☆	★★★
A Teenager		★☆☆	★★☆	★★☆	★★★	★★★
A Guest	★☆☆	★☆☆	★★☆	★★☆	★★★	★★★
2x Guests				★☆☆	★☆☆	★★☆	★★★
An Adult			★☆☆	★☆☆	★★☆	★★☆	★★★
2x Adults						★☆☆	★★☆	★★★	★★★
2x Adults + Pets							★★☆	★★★	★★★
2x Adults + Kids							★☆☆	★★☆	★★★
The Whole Whare									★★★

Key: ★☆☆ Good ★★☆ Great ★★★ Best

Mattress Size FAQs

What are the mattress sizes in NZ?

In New Zealand, our mattress sizes are standardised to fit everyone! They come in Single (91cm x 188cm), Long Single (91cm x 203cm), King Single (107cm X 203cm), Double (137cm x 188cm), Queen (153cm x 203cm), King (167cm x 203cm), Super King (183cm X 203cm) and California King (203cm X 203cm).

Is a double bed big enough for two?

Well yes, but no. A double bed may fit two people lying side by side but it’s a little too tight and too small for both to sleep on. While asleep we move throughout the night and each person needs a little wiggle room. At a minimum, we’d recommend a queen mattress but encourage finding a bigger mattress for a better sleep. However, if the bed isn’t going to be used much or the space doesn’t allow for a bigger bed, then a double bed could work for your guest room or growing teenager.

What is the most popular size bed?

The most popular bed size worldwide is the queen mattress! She’s not too small and not too big! She’s juuust right! With enough wiggle room for the two of you but small enough to fit in most rooms, the queen mattress is a no brainer!

Is a queen mattress bigger than a double mattress?

A queen mattress is 153cm x 203cm. A double is 137cm x 188cm. At 31059cm2 the queen mattress is 18% bigger than a double mattress! Enough room for a starfish.

What size bed and mattress are good for 2 adults?

For 2 adults, the smallest mattress size we can recommend is a queen bed. However, the bigger the better is always encouraged! Ideally, when considering which size mattress to get, you’ve got to consider how much you move around at night, how many may join you in bed (i.e. kids, cats, etc.) and how big your bedroom is. If you have the space, then a super king or california king mattress will give each sleep partner enough room to move without disrupting the other and allow for any unexpectant visitors. Learn more about buying a bed here.

Do couples sleep better in a king-size bed?

Getting a better sleep means not having your sleep disrupted throughout the night. To reduce the likelihood of being disrupted by your partner at night, having more wiggle room is better for your sleep. And with more space around you, there's more room for air to circulate and keep you cooler. Compared with a queen mattress, a couple will find they will sleep better with more room, better airflow and less partner disturbance as a King mattress is bigger in size than a Queen. For more tips on how to get a better sleep, check out our sleep guide.

What’s the best mattress size for me?

There are three key considerations to choosing the right mattress size including, how many people will be sleeping on the bed, what is the size of the people and are you expecting any extra guests? Get more info in our blog about finding the best mattress size for you.

Is a king single the same size as a double?

A king single is narrower and shorter than a double bed. A king single is 107cm x 203cm, while a double bed is 138cm x 188cm. King singles are great for one person needing extra length, but a double offers more width for two.

How big is a full size bed?

A full-size bed, also known as a double, measures 137cm x 188cm. It offers a comfortable amount of space for one adult or a snug fit for two. It’s a popular choice for smaller bedrooms or guest rooms.

Is a double bed the same as a queen?

No, a double bed is smaller than a queen. A double measures 138cm x 188cm, while a queen is 153cm x 203cm. The queen size provides more room for two people to sleep comfortably, making it a better choice for couples.