What Are the Dimensions of a King-Size Bed?

Robb Collins

Published: September 27, 2024

When it comes to choosing the perfect bed, size matters. A king-size mattress offers ample space and comfort, making it a popular choice for couples and those who value extra room while sleeping.

In this article, we will explore the dimensions of king-size mattresses in Canada, including California king and split-king variations, as well as answer common questions to help you decide if a king-size bed is right for you.

What Are King-Size Mattress Dimensions in Canada?

In Canada, a standard king-size mattress measures 76 inches wide by 80 inches long (193 cm by 203 cm). This size provides plenty of space for couples, allowing each person about the same width as a twin bed.

Standard King: 76 inches wide by 80 inches long
California King: 72 inches wide by 84 inches long
Split King: 76 inches wide by 80 inches long

A split-king is two Twin XL mattresses, each 38 inches wide by 80 inches long.

What About California King Mattresses?

A California king mattress, also known as a Western king mattress, is slightly narrower and longer than a standard king. It measures 72 inches wide by 84 inches long (183 cm by 213 cm). This extra length makes it an excellent choice for taller individuals who need more legroom.

What Is the Difference Between a King and a California King Mattress?

Standard King Mattress: Offers more width, making it ideal for couples who want extra personal space.
California King Mattress: Provides additional length, which is better for taller individuals.

What About Split King Mattresses?

A split-king bed consists of two twin XL mattresses placed side by side. Each twin XL mattress measures 38 inches wide by 80 inches long (97 cm by 203 cm), creating a combined dimension of 76 inches wide by 80 inches long.

This setup allows for individualized comfort. It is ideal for use with adjustable bed bases, where different sides of the bed can be set to different incline positions. It’s also a convenient mattress option for beds that might sometimes be pushed together and sometimes spaced apart, like in a guest room.

The image features a modern, stylish bedroom showcasing a luxurious adjustable bed. The bed is set in a slightly elevated position, demonstrating its adjustable capabilities. The room has a clean and minimalistic design with a neutral color palette, including soft greys and whites, which create a calm and inviting atmosphere. Next to the bed, there is a sleek nightstand with a small lamp and a decorative plant, adding a touch of coziness and sophistication to the space. — Pictured: Logan & Cove Adjustable Bed.

Who Are King-Size Mattresses Ideal For?

top down image showing people, pets and kids on a king size bed for scale

King-size mattresses are perfect for:

Couples who want ample personal space while sleeping.
Families with small children and/or pets who might join them in bed.
Taller individuals (especially with a California king).
Those who enjoy a luxurious and spacious sleeping environment.
People with plenty of space in their bedrooms.

How Do I Know if a King-Size Mattress Will Fit in My Bedroom?

Measure your room: Ensure you have enough space to comfortably fit the mattress and still move around. A standard recommendation is that your bedroom should be at least 12 feet by 12 feet to accommodate a king-size bed. Any less than that and your room will seem cramped.

Top down view of a King-size in a room — King-size bed in a large bedroom.

King-size beds are best suited for:

Large Master Bedrooms: Ideally, the room should be at least 12 feet by 12 feet to comfortably accommodate a king-size bed along with other furniture.
Spacious Designs: King-size beds work well in rooms with a minimalist design to prevent the space from feeling cramped.
Luxurious Interiors: Larger mattresses complement rooms with upscale, sophisticated decor, enhancing the overall aesthetic.

Can a King Bed Fit in a Smaller Room?

Top down view of a King-size in a 10x10 room — King-size bed in a 10′ x 10′ bedroom.

A king-size bed can technically fit in a 10′ x 10′ room, but it will be very tight, leaving little room for other furniture or movement. It is recommended to place a king-size bed in a larger room to ensure comfort and functionality.

What Are the Different Sizes of King-Size Beds?

The main types of king-size beds include:

Standard King (Eastern King): 76 inches wide by 80 inches long.
California King (Western King): 72 inches wide by 84 inches long.
Split King: Two Twin XL mattresses, each 38 inches wide by 80 inches long, combined to make 76 inches wide by 80 inches long.

Are There Any Special Bedding Requirements for a King-Size Mattress?

The image showcases a luxurious bed made with Logan & Cove bamboo sheets. The bed features a neatly made, soft, and inviting surface with smooth, silky white sheets that exude a sense of comfort and elegance. The pillows are plump and covered with matching pillowcases, adding to the overall aesthetic of the bedding. The natural light streaming in from the nearby window enhances the serene and tranquil ambiance of the bedroom. The background includes a simple and modern nightstand with a small plant, contributing to the clean, minimalist decor. The focus on the bamboo sheets highlights their high-quality, breathable, and eco-friendly properties, promising a restful and luxurious sleep experience. — Pictured: Logan & Cove Bamboo Sheets.

King-size sheets, pillows, blankets, and comforters are specifically designed for this size. Queen sheets will not fit properly.

If you opt for a split-king mattress, you will need two sets of twin XL sheets.

Can a Queen Bed Sheet Fit a King?

No, a queen bed sheet will not fit a king-size mattress. A queen-size sheet is designed for a 60 inches wide by 80 inches long bed, which is much smaller than a king-size mattress. It’s important to use appropriately sized sheets to ensure a proper fit. Learn more about our sheets.

What’s the Difference Between a King-Size Mattress and a Queen-Size Mattress?

King bed (left) compared to a queen bed (right).

The main differences between a king-size and a queen-size mattress are:

Dimensions: A king-size mattress measures 76 inches wide by 80 inches long, while a queen-size mattress measures 60 inches wide by 80 inches long.
Space: A king-size bed offers 16 inches more width than a queen, providing more personal space for each sleeper.
Suitability: A king-size bed is ideal for larger rooms and those who need more space, while a queen-size bed fits better in smaller bedrooms and is often sufficient for couples.

What Are the Best Types of Mattresses for a King-Size Bed?

Large mattresses can be a wonderful indulgence, not to mention an investment in your sleep quality. That’s why it makes sense to choose a luxurious mattress brand like the Logan & Cove Frontier hybrid mattress. In fact, out of all of the sizes available, Logan & Cove sells more king-size mattresses than any other size.

If you tend to prefer all-foam mattresses, you can also consider these two brands:

Douglas Foam Mattress: Excellent for contouring and pressure relief.
Octave Memory Foam + Latex Mattress: Durable and offers good support with cooling materials.

How Firm Should My King-Size Mattress Be?

Our product research shows that medium-firm is the optimal level of firmness for a king-size mattress. This is further supported by a 2021 study which found that medium-firm mattresses are best for back pain. Medium-firm mattresses provide both cushioning and support, helping to relieve back pain effectively.

The image depicts a graphic showcasing the different firmness levels available for king sized mattresses, with a specific focus on Logan & Cove firmness rating system of medium firm.

What Kind of Foundation or Bed Frame Is Needed for a King Size Mattress?

Ensure your bed frame or foundation can support the weight and size of a king mattress. Look for a sturdy frame with a centre support bar. Here are our recommendations for the best bed frames for our mattresses:

Platform: solid, flat, and untreated wood platform beds.
Box Foundation: boxed foundations with a solid, non-flexing construction. Coiled or wire grid boxsprings are NOT compatible.
Slatted Base: horizontal slats with gaps no more than 3″ apart and slats no less than 2″ wide.
Adjustable Bed: non-medical adjustable bed frames, either motorized or manually adjustable.

How Does a King-Size Mattress Affect Sleep Quality for Couples?

A king-size mattress provides ample space for both partners, reducing disturbances from movement. Logan & Cove also offers excellent motion isolation and edge support, which can further minimize disturbances.

What Should I Look for in Terms of Durability and Warranty?

Always look for signs of high-quality materials as they generally last longer. Check the warranty period and what it covers (e.g., sagging, defects). Every Logan & Cove mattress is made in Canada, a country known for high-quality manufacturing. With a rich history spanning 30 years, Logan & Cove’s family-run facilities manufacture each mattress using state-of-the-art sewing and quilting machinery alongside traditional hand-finishing techniques. Plus, every mattress is backed by a 365-night sleep trial and 15-year warranty.

What Are the Price Ranges for King-Size Mattresses?

Prices can vary widely based on materials, brand, and features, but Logan & Cove king-size mattresses start at just $1,299 CAD. It’s also worth considering the long-term investment in quality and comfort rather than just the initial cost.

Can a King-Size Mattress Be Delivered and Set-up in my Home?

The Logan & Cove king sized luxury mattress is a mattress-in-a-box and it will arrive at your front door. The box is ergonomically designed for maneuverability, but it’s worth checking the dimensions to determine that the mattress can be easily delivered to your bedroom, especially if you live in an older building or have narrow hallways/stairs. Once in your bedroom, remove it from the box, unroll it, and unwrap it from the reinforced plastic packaging. It will take up to 24 hours for your mattress to completely expand and be ready to sleep on.

How Do I Care for and Maintain a King-Size Mattress?

Treat a king-size mattress as you would any other high-quality mattress. Regularly rotate the mattress to ensure even wear. Follow our guidelines for cleaning to maintain hygiene and longevity. And use a mattress protector to guard against spills and stains. Our mattresses include a FREE sleep bundle, which includes a mattress protector.

Pictured: Logan & Cove Mattress Protector.

Conclusion

Choosing a king-size mattress offers unparalleled comfort and space, making it an excellent investment for those who prioritize a good night’s sleep. Whether you opt for a standard king, California king, or split king, understanding the dimensions and benefits can help you make an informed decision that suits your lifestyle and bedroom design.

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