When it comes to choosing a mattress, size matters. Whether you’re upgrading your bed, furnishing a guest room, or selecting a mattress for a child, understanding the various mattress sizes available can help you make an informed decision. This guide simplifies the most common mattress sizes, highlights their best uses, and tackles your top questions—so you can choose with confidence and sleep soundly.
Please note: we’ve listed the mattress sizes for My Green Mattress’s mattresses. They are slightly different from the “standard” mattress sizes.
Mattress Sizes and Their Best Uses
Twin (38″ x 75″)
Best for: Children, bunk beds, and small bedrooms
A twin mattress is the smallest standard size and is commonly used for children’s rooms, dormitories, and bunk beds. Its compact size makes it ideal for smaller spaces, and it’s a great transition bed for kids moving from a crib to their first big-kid bed.
Twin XL (38″ x 79″)
Best for: Taller individuals, college dorms, and small bedrooms
The twin XL mattress is four inches longer than a standard twin, making it an excellent choice for taller individuals who need extra legroom. It’s also the standard size found in college dorms.
Full (53″ x 75″)
Best for: Single adults, guest rooms, and teenagers
A full-size mattress offers more width than a twin, making it a comfortable option for single sleepers who want more space. While it can accommodate two people, it may feel a bit cramped, especially for couples who prefer extra room to spread out.
Full XL (53” x 79”)
Best for: Taller individuals, guest rooms, taller teenagers
A full XL mattress is four inches longer than a full-size mattress, making it an ideal choice for taller adults or teens who need extra leg room, and for guest rooms. It can accommodate two people but can feel a bit cramped for a couple.
Queen (60″ x 79″)
Best for: Couples, master bedrooms, and those who like extra space
The queen mattress is the most popular mattress size, providing ample space for couples while still being a practical choice for smaller master bedrooms. It’s also a great option for single sleepers who love a little extra room.
King (75″ x 79″)
Best for: Couples who want maximum space, families who co-sleep
A king-size mattress provides generous room for couples, and it’s an excellent option for parents who share the bed with young children. If you have the bedroom space for it, a King mattress offers the ultimate in luxury and comfort, with ample space for everyone to stretch out.
California King (72″ x 83″)
Best for: Tall individuals, spacious bedrooms
Slightly narrower but longer than a standard King, the California King is a great choice for taller sleepers who need extra legroom. This size works best in large bedrooms where space is not a concern. California king bedding and headboards may have limited availability when compared to a regular king size
The Importance of Mattress Size
A great night’s sleep starts with the right mattress size. Whether you’re looking for a cozy Twin for a child’s room, a spacious King for ultimate comfort, or something in between, finding the perfect fit makes all the difference. At My Green Mattress, we craft high-quality, eco-friendly mattresses in all standard sizes (and even crib-size), ensuring you sleep soundly and sustainably.
Frequently Asked Questions
1. What is the best mattress size for couples?
A Queen-size mattress is the most popular choice for couples, but if you prefer more space, a King or California King may be better options.
2. Can two people sleep on a full-size mattress?
Yes, but it may feel cramped. A full size mattress is best suited for single sleepers who want extra room.
3. How do I choose the right mattress size for my bedroom?
Measure your bedroom and ensure that your chosen mattress size allows for at least two feet of walking space around the bed and so you have ample room to make your bed. Consider furniture like nightstand, rug placement, and storage needs as well.
4. What’s the difference between a King and California King?
A king mattress is wider, while a California king is 3 inches narrower and 4 inches longer. The best choice depends on whether you prioritize width or legroom.
5. What’s the best mattress size for a growing child?
A twin or twin XL is a great choice, depending on your child’s height and future growth. If you want to invest in a longer-term option, a full size mattress or even a full xl mattress can grow with them into their teen years.
6. What size mattress is best for small apartments?
A full or queen mattress is ideal for small apartments, providing enough space without overwhelming the room.
7. Do mattress sizes affect sleep quality?
Yes! If you feel cramped, it can impact your sleep quality. Choosing a size that allows you to move comfortably can help you sleep better.
8. What is a low profile mattress?
A low profile mattress is 8 inches or less and works well for toddler beds, floor beds, bunk bed and trundle beds.
