Mattress Sizes and Dimensions
Choosing the Right Size
Mattress is the First Step
to Getting Your Best Sleep
Thinking about upgrading your old mattress? Picking the right size mattress can help you avoid the costly and frustrating hassle of having to return a bed that doesn’t fit your bedroom (or your needs).
And if you’re making the leap to an entirely new mattress size, choosing the right dimensions is doubly important, as you have to consider how much sleeping space that you’ll need for ultimate comfort and the best night’s sleep possible.
What's in This Guide?
While adults can sleep on a twin size mattress, it is most commonly used with children’s bed frames, as it is the smallest sleep area of all the standard mattress sizes. Twin mattress dimensions are typically 38 inches wide by 75 inches long (38” W x 75” L).
Check out Lull's Twin Memory Foam Mattress
Check out Lull's Twin Hybrid Mattress
With 5 inches of additional length, the twin XL (extra long) mattress is a great option for college students due to its extra leg space – this size mattress is regularly found in university dorm rooms. Twin XL mattress dimensions are typically 38 inches wide by 80 inches long (38” W x 80” L).
Check out Lull's Twin XL Memory Foam Mattress
Check out Lull's Twin XL Hybrid Mattress
Also known as a “double mattress,” a Full size mattress is a great choice for growing children, but usually doesn’t provide enough space for two adults to share comfortably, especially if they are over 5’8” tall. Full mattress dimensions are 54 inches wide by 75 inches long (54” W x 75” L).
Check out Lull's Full Memory Foam Mattress
Check out Lull's Full Hybrid Mattress
The most popular mattress size choice for the average adult sleeper, the Queen size mattress provides more sleeping space than the Full mattress, and is usually offers enough space for two adults to sleep together in comfort, especially if you and your partner enjoy cuddling up with one another at bedtime. Queen size mattress dimensions are 60 inches wide by 80 inches long (60” W x 80” L).
Check out Lull's Queen Memory Foam Mattress
Check out Lull's Queen Hybrid Mattress
The best choice for partners that enjoy their own space when sleeping, or for those that share their bed with kids or pets, the King size mattress provides ample room for a quality night’s sleep. Essentially two Twin XL mattresses merged together, the King size mattress dimensions are 76 inches wide by 80 long (76” W x 80” L).
Check out Lull's King Memory Foam Mattress
Check out Lull's King Hybrid Mattress
For people that are over 6’ tall or enjoy “family sleeping” with kids or pets, the California King size mattress is a great choice. A “Cal” King mattress is 4 inches narrower and 4 inches longer than a traditional King size mattress, giving tall sleepers plenty of room to stretch their legs. California King size mattress dimensions measure 72 inches wide by 84 inches long (72” W x 84” L).
Check out Lull's Cal King Memory Foam Mattress
Check out Lull's Cal King Hybrid Mattress
Lull Mattresses Pair Best with Lull
Bed Frames and Foundations
Also works with other bed frames and more.
Use with or without a box spring.
- Flat Platform
- Adjustable Bed
- Slatted Base
Top Questions
The short answer is yes. You may find references to Twin mattress sizes as 39” W x 74” L. And Twin XL mattress sizes as 39” W x 80” L. Many manufacturers round-up dimensions of their mattresses to make them appear larger. In some cases by over 1 inch. The dimensions displayed on this page are more accurate measurements of your new mattress.
Unfortunately, the answer to this question is no. Bed frame manufacturers leave one to two inches around the mattress to fit into their frames. The amount of clearance will vary by manufacture. Take time to measure your sleeping space. This will ensure your bed frame will fit and leave room for movement around the bed. All Lull bed frames have been specifically designed for Lull mattresses, a perfect fit to complete your new bed.