Bed size guide
By Zara Flynn | Last edited: July 2026
Choosing the right bed doesn’t have to be complicated. Whether you’re short on space or ready to spread out, it all starts with size. From single beds to super kings, we’ll help you find one that fits your room and your sleep style perfectly.
Bed sizes and dimensions
Not sure where to start? Get to know your bed sizes. From compact singles to roomy super kings, each option gives you a different amount of space to stretch out. Pick the one that works for your room and how you like to sleep.
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Single bed size
- Width 90cm, length 190cm
- Single beds are designed just for one person. Perfect for spare rooms and big kids who've outgrown their toddler beds.
Double bed size
- Width 135cm, length 190cm
- Doubles are the same length as a single, but wider. Ideal for couples or individuals who like to stretch out.
King size beds
- Width 150cm, length 200cm
- King size beds are wider and longer than doubles. Great if you’re tall, or don’t like fighting for the covers.
Super king bed size
- Width 180cm, length 200cm
- Super king beds are even wider than a king size, but are the same length. Ideal for larger master bedrooms.
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Small double bed size
- Width 120cm, length 190cm
- Small doubles are a narrower style of double bed, perfect if you’re short on space in a bedroom.
Shorty bed size
- Width 75cm, length 175cm
- Shortys are a type of single bed with less width and length, designed as a first proper bed for older children.
Toddler bed size
- Width 70cm, length 140cm
- Toddler beds are even smaller than shortys and are best suited to younger children.
Bed size chart
Choosing the right bed frame starts with understanding key bed‑type dimensions. From single bed size to king and super king size, use this quick bed sizes chart to compare them and choose the perfect frame for your bedroom.
| Bed size | Bed dimensions (in ft.) | Bed dimensions (in cms) |
|---|---|---|
Single bed | 3' x 6'3" | 90 x 190cm |
Small double bed | 4' x 6'3" | 120 x 190cm |
Double bed | 4'6 x 6'3" | 135 x 190cm |
King size bed | 5' x 6'6" | 150 x 200cm |
Super king size bed | 6' x 6'6" | 180 x 200cm |
Shop by bed types
There’s more than one way to get a great night’s sleep. Go for a sleek bed frame, a practical divan or an ottoman with hidden storage. Whatever your style or storage needs, there’s a bed to match.
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Discover new and trending in beds
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Guests staying over?
Got visitors on the way? No problem. From sofa beds to guest beds and clever space-saving options, you can create a comfy spot for them without giving up too much space.
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Sofa beds
Get sleepover ready in minutes with sofa beds. Pulling double duty without breaking a sweat, they are sofa by day, bed by night. Learn how to choose the right one here.
Things you need to know about bed mattress sizes
A great bed needs the right mattress to match. Make sure yours fits perfectly for the best comfort and support. If you like a bit more room to stretch out, it can be worth sizing up.
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What mattress sizes are available?
From smallest to largest, the four most common sizes of bed mattress are single, double, king size and super king size. There are some additional size choices for mattresses and bed frames, including small double, shorty and toddler.
Mattress size vs frame size
The size of a mattress and bed frame will always match; meaning a double mattress will fit on a double bed frame and so on. There’s no matching required with a divan bed, as it is a mattress and bed all-in-one.
Consider the bedroom layout and size
Before you decide, grab a tape measure. Make sure your bed fits comfortably, with enough room to move around and add essentials like bedside tables. The right layout makes all the difference.
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Small bedroom bed ideas
A single bed can create a clean, minimalist look in a tight room, while still offering plenty of comfort. Or you could pick a storage bed design to maximize every inch. It's perfect for stashing spare bedding, shoes, or anything you want out of sight.
Mattress recycling and exchange programme
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Taking care of your bed frame
Looking after your bed frame helps keep it strong, stable and looking its best over time. With the right cleaning routine and a little regular upkeep, you can prevent wear, reduce noise and extend its lifespan.
- Every few months, check all screws, bolts and joints and tighten anything that has loosened. Keep the area around and under your bed clean on a weekly to monthly basis to reduce dust and improve airflow.
- At the start of each season, remove the mattress to clean slats or supports, check for signs of wear and allow the frame to air out. If you have a storage or ottoman bed, avoid overfilling it and make sure lifting mechanisms work smoothly.
Different bed frames require different cleaning methods.
Wooden bed frames
Wipe down regularly with a soft, slightly damp cloth to remove dust and marks, then dry straight away to prevent moisture damage. Avoid harsh chemicals and use a suitable wood polish occasionally to maintain the finish.
Metal bed frames
Dust frequently to keep the surface clean and use a gentle cleaner or polish to maintain shine. Keep an eye out for chips or scratches, and address them early to help prevent rust.
Upholstered bed frames
Vacuum weekly using a brush attachment to remove dust, crumbs and pet hair. For spills or marks, spot clean with a mild fabric cleaner and always test on a small hidden area first.
Ottoman and storage beds
Open the storage space regularly to air it out and prevent moisture build-up. Do not overload the compartment, and check hinges and lift mechanisms every few months to ensure smooth operation.
Helpful tools for bed frame care: A microfibre cloth, a vacuum with a brush attachment, a gentle cleaner suited to your frame material, and a basic toolkit with a screwdriver or allen keys will make maintenance quick and easy.
Bedroom layout ideas by you
Still unsure about the correct placement of your bed? Let customers who've shopped from Argos inspire you.
Bedroom essentials
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FAQs about bed and mattress sizes
Is a queen size bigger than a king size bed?
A king size bed is larger than what many call a queen, offering more width and comfort. This makes the king size ideal for couples wanting extra sleeping space.
What are the bed sizes in the UK?
UK bed sizes follow a set of standard dimensions that cater to different room sizes and comfort needs.
- A small single measures 75 × 190cm and works well in tight spaces or children’s rooms
- A single at 90 × 190cm is the typical choice for one person.
- A small double at 120 × 190cm offers extra width for solo sleepers.
- The double at 135 × 190cm is a popular option for couples who don’t mind a cosy fit.
- For more space, a king size measures 150 × 200cm, giving extra length and width.
- The super king at 180 × 200cm provides the most generous sleeping area for larger bedrooms.
Are double and king size the same?
A double bed and a king size bed are not the same. A king size bed is wider and longer. It provides more space for couples or taller sleepers. Choosing between double vs king depends on your room size and your comfort preferences.
How to clean your bed and mattress?
To clean your mattress, vacuum it thoroughly, spot‑clean stains with mild detergent, and allow it to air out. Washing bedding weekly and rotating your mattress regularly helps maintain its freshness and extend its lifespan. A clean mattress improves sleep quality and overall hygiene. For more information on keeping your mattress clean, click here.
What are some ways to recycle mattress?
You can recycle your mattress through local council collection, specialist recycling centres, or charity donation if it’s in good condition. Recycling your mattress helps reduce landfill waste and supports eco‑friendly disposal.
How do I know what bed is right for me?
Choosing the right bed means balancing comfort with practicality.
- Start with size, ensuring the bed fits in your room while giving you enough sleeping space.
- Consider the base type such as divan, ottoman, or slatted frames, which affects support and durability. Your preferred style also matters, whether you want a modern low‑profile frame or a classic upholstered headboard that complements your décor.
- Set a realistic budget that covers both the bed frame and mattress, and pay attention to materials, from solid wood and metal frames to breathable or hypoallergenic mattress fabrics.
- Finally, think about your storage needs. Beds with drawers or lift‑up ottoman bases are ideal for maximising space in smaller bedrooms.
Is it better to have a higher or lower bed?
Higher beds offer easier access and a more traditional look, while lower beds create a modern, minimalist feel. Your ideal height depends on mobility, style preference, and how much storage you need. Both high and low beds can provide excellent comfort with the right mattress.
How do I calculate my bed size?
Measure the length and width of your mattress or bed frame using a tape measure, then compare it to standard UK bed dimensions. Leave enough space around the bed for movement and furniture placement. Accurate measurements ensure you choose the correct mattress size and bedding.
How often should you replace your bed?
Most beds and mattresses should be replaced every 7–10 years, depending on wear and comfort. If you notice sagging, discomfort, or poor sleep, it may be time for an upgrade. Regular replacement ensures proper support and better sleep quality.
What is the difference between king and super king size bed?
The main difference between a king size and a super king size bed is the width, which affects how much personal space you have while sleeping. Both sizes are the same length, making them suitable for taller sleepers, but a super king offers extra room to stretch out.
- A king size bed measures 150cm x 200cm (5ft x 6ft 6in), making it a great choice for couples who want comfort without taking up too much floor space.
- A super king size bed measures 180cm x 200cm (6ft x 6ft 6in), offering an additional 30cm in width for maximum comfort in larger bedrooms.
What size is a double bed in inches?
A double bed measures 54 inches wide by 75 inches long, which is equivalent to 135cm x 190cm. This size is ideal for two people with limited space or one person who prefers more room to stretch out.
