Mattress Size Guide: Understanding Twin, Full, Queen, King, and More

When it comes to choosing the right mattress, size is one of the most important factors. Whether you're furnishing a guest room or upgrading your own sleep experience, selecting the correct mattress size can make a huge difference in comfort. But how do you know which mattress size is the best fit for your needs? Let’s break down the dimensions of various mattress sizes.

1. What Size is a Twin Mattress?

A twin mattress is the smallest of the standard mattress sizes, often used in children’s rooms, dorms, or small spaces. The dimensions of a twin mattress are typically 38 inches wide by 75 inches long. It's perfect for a single sleeper who doesn’t need a lot of extra space.  

  If you’re looking for a budget-friendly option, Anmiz offers a 10-inch Hush Hybrid Mattress in twin size, which provides excellent support with MotionGuard™ technology for undisturbed sleep and PureGuard™ antimicrobial protection for a fresh, clean sleep environment.  

  2. What Size is a Twin XL Mattress?

If you need a little more length, a twin XL mattress is a great option. With the same width as a regular twin, it measures 38 inches by 80 inches. This extra 5 inches in length makes it a popular choice for taller individuals, especially in college dorms.  

3. What Size is a Full Mattress?

A full mattress, also known as a double mattress, offers more space than a twin, making it a good choice for adults or couples who don’t mind a snug fit. The dimensions of a full mattress are 54 inches wide by 75 inches long. It provides enough room for one person to stretch out comfortably but may be a bit tight for two sleepers.

The 12-inch Flow Classic Hybrid Mattress from Anmiz is an ideal full-size option, offering medium firmness with dual-layer comfort foam for pressure relief and MotionGuard™ technology for minimizing movement disruption.  

4. What Size is a Queen Mattress?

The queen mattress is one of the most popular sizes for couples. Its dimensions are 60 inches wide by 80 inches long, providing ample space for two people to sleep comfortably without feeling cramped. It’s also a good option for single sleepers who prefer extra space to move around at night.  

Anmiz offers the Luna Luxury Hybrid Mattress in queen size, combining Anmiz-Y™ ergonomic foam for pressure relief with Luna-Lumbar Zone™ for targeted lower back support. It’s a perfect blend of comfort and support for couples and individuals who want a restful sleep experience.  

5. What Size is a King Mattress?

For those who prefer more room to stretch out, the king mattress is an excellent choice. Measuring 76 inches wide by 80 inches long, it offers even more space than a queen. It’s ideal for couples who need extra space or for those who share the bed with pets or children. If you need an even larger option, a California King mattress might be just what you’re looking for.  

The Luna Luxury Hybrid Mattress from Anmiz, available in king size, features Therapeutic Support Core™ which integrates MotionGuard™, Anmiz-Y™, and Luna-Lumbar Zone™ technology for ultimate comfort, support, and pain relief. This combination is perfect for couples who want the best in sleep technology and luxurious comfort.  

6. What Size is a California King Mattress?

The California King mattress is the longest mattress available. It measures 72 inches wide by 84 inches long, providing extra length, which makes it perfect for taller individuals. However, it’s slightly narrower than a standard king mattress, so keep that in mind when considering the available space in your bedroom.  

7. What’s the Largest Mattress Size?

The largest mattress size generally available is the California King. Although it’s not as wide as a king, it offers more length, which is ideal for taller sleepers. Some manufacturers may offer custom mattress sizes, but the California King is the largest standard mattress size on the market.  

8. What Are the Measurements of a Full Size Mattress?

As mentioned earlier, the full size mattress measures 54 inches wide by 75 inches long. This size is slightly wider than a twin but still compact enough to fit smaller bedrooms. It’s commonly used in guest rooms and smaller master bedrooms.  

9. What Are the Dimensions of a Queen Size Mattress?

The queen mattress dimensions are 60 inches by 80 inches, as mentioned above. It’s a great size for couples or individuals who prefer more room without needing a large king-sized bed. This size is also widely available and is often a default choice in many mattress stores.  

10. How Big is a King Size Mattress?

A king mattress measures 76 inches wide by 80 inches long, offering plenty of space for two sleepers. It’s the go-to option for couples who want the most room possible in a standard bed, especially if you’re someone who moves around during sleep or shares the bed with pets or children.  

11. How Much is a Queen Size Mattress?

The cost of a queen size mattress can vary greatly depending on the brand, materials, and features. On average, you can expect to pay between $300 and $2,000 for a quality queen mattress. Higher-end options with memory foam, gel layers, or special support features may cost more.  

Hush™ Hybrid Mattress

$ 299.99

$ 429.00

Buy now

Flow Classic Hybrid Mattress

$ 199.99

$ 499.99

Buy now

Luna™ Luxury Hybrid Mattress

$ 559.99

$ 799.99

Buy now

12. What’s the Size of a Full Bed Mattress?

A full bed mattress is simply another name for a full mattress or double mattress, which measures 54 inches wide by 75 inches long. It’s a common size for single sleepers who enjoy more room to spread out but don’t need the full space of a queen or king.  

13. What Size is a Crib Mattress?

A crib mattress is significantly smaller than any of the adult bed sizes. The standard size for a crib mattress is 28 inches wide by 52 inches long. This size is designed specifically for babies and toddlers, providing a snug and safe sleep environment.  

14. What’s the Size of a Twin Mattress in Inches?

A twin mattress is 38 inches wide by 75 inches long, offering a compact option for single sleepers, ideal for children’s rooms, smaller bedrooms, or dormitories.  

15. What Size is a Futon Mattress?

A futon mattress can vary in size, but the most common dimensions are similar to a full mattress, around 54 inches by 75 inches. Futons are versatile pieces of furniture that can double as both a bed and a sofa, making them ideal for small spaces.  

16. How Long is a King Size Mattress?

A king size mattress measures 80 inches in length. This is the same length as a queen or full mattress but much wider, making it a great option for those who need more space to move around while sleeping.  

17. What’s the Width of a Full Size Mattress?

The width of a full size mattress is 54 inches. This is ideal for single sleepers who want extra space to stretch out without taking up too much room in the bedroom.  

Conclusion: Choosing the Right Mattress Size

Choosing the right mattress size is essential for ensuring a good night’s sleep. Whether you’re looking for a cozy twin mattress for a small space or a spacious king-sized bed for maximum comfort, understanding the dimensions of each mattress type is key. Make sure to take measurements of your room and consider your sleeping preferences before making a final decision.

Mattress Size Comparison

This guide should help clarify the different mattress sizes and which one best suits your needs, ensuring a more comfortable sleep experience.