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What is the Biggest Mattress Size? A Comprehensive Guide to Finding the Perfect Fit

From the Puffy Editorial Team | 4 min read.
What is the Biggest Mattress Size? A Comprehensive Guide to Finding the Perfect Fit

When it comes to finding the perfect mattress, size matters. Whether you're sharing your bed with a partner, pets, or just need extra space to spread out, choosing the right mattress size is crucial for a comfortable and restful night's sleep. But what is the biggest mattress size available? In this guide, we'll explore the largest mattress sizes on the market, helping you find the ideal fit for your sleep needs. So, let's dive in and discover the ultimate sleep solution for those who crave more space.

Common Mattress Sizes

Twin and Twin XL

Twin mattresses are typically the smallest option available, measuring 38 inches wide by 75 inches long. Twin XL mattresses offer slightly more length at 80 inches, making them a popular choice for taller individuals or college dorm rooms.


Full mattresses, also known as double beds, measure 54 inches wide by 75 inches long. This size is ideal for single sleepers who desire more space than a twin mattress provides.


The queen mattress is a popular choice for couples or single sleepers who crave extra room. Measuring 60 inches wide by 80 inches long, it provides more width than a full mattress while maintaining the same length as a twin XL.


King mattresses are designed for couples who desire ample space, measuring 76 inches wide by 80 inches long. This size offers the same length as a queen mattress but with an additional 16 inches of width.

The Biggest Mattress Sizes

California King

California king mattresses are slightly longer and narrower than standard king sizes, measuring 72 inches wide by 84 inches long. This option is well-suited for taller individuals or those with large bedrooms.

Alaska King

The Alaska king mattress size is an impressive 108 inches wide by 108 inches long, offering a significant increase in both width and length compared to a standard king or California king. This size is ideal for families who co-sleep or individuals who simply desire a luxurious amount of space.

Texas King

The Texas king mattress size measures 80 inches wide by 98 inches long, making it larger than a California king but smaller than an Alaska king. This size offers additional length for taller sleepers and is a popular choice for spacious master bedrooms.

Wyoming King

The Wyoming king mattress size is a substantial 84 inches wide by 84 inches long, providing ample space for couples who want more width and length than a standard king or California king. This size is perfect for those who desire a spacious sleep surface without the vast dimensions of an Alaska king.

Tips for Choosing the Right Mattress Size

When selecting the biggest mattress size for your needs, consider the following factors:

  • Room size: Ensure your bedroom has enough space to accommodate the mattress, as well as any additional furniture and walking space.
  • Bed frame compatibility: Verify that your bed frame can support the mattress size you choose.
  • Budget: Larger mattress sizes tend to be more expensive, so factor in your budget when making your decision.
  • Sleep preferences: Consider your sleep habits and preferences, as well as those of your partner if applicable. If you tend to toss and turn or require extra space for comfort, a larger mattress size may be a better fit.
  • Bedding availability: Keep in mind that specialty mattress sizes may require custom bedding, which can be more expensive and harder to find.


The biggest mattress size is the Alaska king, offering a luxurious 108 inches by 108 inches of sleep surface. However, there are several other large mattress sizes available, such as the California king, Texas king, and Wyoming king. Each of these options provides varying dimensions to accommodate different sleep needs and preferences.

Discover how to take your sleep to the next level. Compare Puffy’s mattresses side-by-side to see all benefits.

By carefully considering factors like room size, bed frame compatibility, budget, sleep preferences, and bedding availability, you can choose the perfect mattress size for your ultimate sleep experience. Whether you opt for the expansive Alaska king or a more modest California king, the right mattress size can enhance your comfort and help you achieve a restful night's sleep. So, go ahead and embrace the world of bigger mattress sizes — your dream sleep space awaits!

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