Standard King Mattress Dimensions
When it comes to choosing the right mattress for your bedroom, size matters. And if you are considering a king size mattress, then you need to know the standard dimensions to ensure a perfect fit. A king size mattress, also known as a regular king mattress, is the most popular mattress size in the market. Let’s take a look at the standard king mattress dimensions and what you need to know before making a purchase.
King Size Mattress Measurements
The standard king size mattress measures 76 inches in width and 80 inches in length. This makes it 16 inches wider than a queen size mattress and the same length as a queen size. It is the perfect size for couples who want to have enough space to spread out while sleeping. It can also accommodate a small child or pet if they like to sleep with their parents.
King Mattress Size Chart
For a better understanding of the dimensions, here is a king mattress size chart:
King Size Mattress Dimensions: 76 inches x 80 inches
Queen Size Mattress Dimensions: 60 inches x 80 inches
Full Size Mattress Dimensions: 54 inches x 75 inches
Twin XL Size Mattress Dimensions: 39 inches x 80 inches
Twin Size Mattress Dimensions: 39 inches x 75 inches
King Size Bed Dimensions
It is important to note that the standard king size mattress dimensions do not include the bed frame. The bed frame adds an additional 4-5 inches to the width and length of the mattress, making the total dimensions around 80 inches x 84 inches. It is essential to measure your bed frame to ensure that the mattress will fit properly.
King Size Mattress Dimensions in Feet
For those who prefer to think in feet instead of inches, here are the dimensions of a king size mattress in feet:
Length: 6.6 feet
Width: 6.3 feet
King Size Mattress Dimensions in Inches
If you want to have a more detailed look at the dimensions in inches, here they are:
Length: 80 inches
Width: 76 inches
King Size Mattress Dimensions in CM
For those who use the metric system, here are the dimensions of a king size mattress in centimeters:
Length: 203 cm
Width: 193 cm
King Size Mattress Dimensions in Meters
And for those who prefer meters, here are the dimensions in meters:
Length: 2.03 meters
Width: 1.93 meters
King Size Mattress Dimensions Comparison
Now that you know the dimensions of a king size mattress, let’s compare it to other sizes:
Queen vs King Size Mattress Dimensions: The king size mattress is 16 inches wider than the queen size mattress.
Full vs King Size Mattress Dimensions: The king size mattress is 22 inches wider than the full size mattress.
Twin XL vs King Size Mattress Dimensions: The king size mattress is 37 inches wider than the twin XL size mattress.
Twin vs King Size Mattress Dimensions: The king size mattress is 37 inches wider than the twin size mattress.
King Size Mattress Dimensions vs Queen
Many people wonder whether they should opt for a king size mattress or a queen size mattress. While the dimensions of a king size mattress may seem much larger, it all comes down to personal preference and the size of your bedroom. If you have a larger bedroom and want more space to spread out while sleeping, then a king size mattress may be the better choice. However, if you have a smaller bedroom, a queen size mattress may be a more practical option.
The Importance of Choosing the Right Mattress Size for Your Bedroom

Why Regular King Mattress Dimensions are a Popular Choice
