Mattress Size Information

Standard Mattress Sizes

Modern mattress models are commonly manufactured in the following sizes: King, California King, Queen, Full XL, Full, Twin XL, and Twin. Not all models are made in every size, though many are. Each of these mattress sizes is designed to meet a specific need, with factors like room size, how active of a sleeper you are, and whether or not you share the bed determining which size would best suit your needs.

See our Best Mattresses of 2019 article to see the top choice for any size.

show cm➦show inches➦
King »76" x 80"183cm x 203.5cm
Cal King »72" x 84"183cm x 213.5cm
Queen »60" x 80"152.5cm x 203.5cm
Full XL »54" x 80"134.5cm x 203.5cm
Full »53" x 75"134.5cm x 190.5cm
Twin XL »38" x 80"96.5cm x 203.5cm
Twin » 38" x 75"96.5cm x 190.5cm

King (76" x 80")

King size mattresses are designed for couples who want spacious luxury. King size mattresses are great for couples with an active and/or very light sleeper, providing plenty of space for one person to move without disturbing the other. As the largest of the standard mattress sizes, you can expect King mattresses to be the most expensive for any given model, but the extra cost is well worth the spacious comfort in the long run. Be sure to measure out how much floor space a King will take up before buying one, you may be surprised how much your walkways will shrink! Shop King Size Mattresses

  • Designed for couples
  • Most spacious standard mattress size

California King (72" x 84")

The California King size mattress is designed for tall people whose feet hang off the end of most beds. Trading 4-inches of width for an extra 4-inches of length compared to the standard King, the Cal King is the longest of the standard mattress sizes. Still plenty wide enough for sharing, California King mattresses are a great solution for tall people whether or not they share the bed. Shop California King Size Mattresses

  • Works for individuals or couples
  • Longest standard mattress size

Queen (60" x 80")

Queen size mattresses are the gold standard in the industry today. They have a width suitable for sharing, and a length that works for all but the tallest people. The Queen is most commonly used for advertised prices, and in most cases the most cost-effective size (area vs. price). The Queen size is ideal for couples who are looking for a cost-effective, floor space-friendly mattress, making it the most common bed size for master bedrooms.Shop Queen Size Mattresses

  • Designed for couples
  • Most affordable size for couples

Full XL (54" x 80")

Full XL size mattresses are the same width as the Full, but 5-inches longer. Full XL mattresses are great for tall individuals who don't need the spaciousness of a Queen, but enjoy something roomier than a Twin. Full XL mattresses still don't have the width to effectively accommodate couples, and the Full XL size of many models costs the same as the couple-oriented Queen. Full XL mattresses work well for tall, active sleepers who want the largest size intended for single person use. Shop Full XL mattresses

  • Designed for single sleepers
  • Extra long
  • Most spacious standard mattress size for single sleepers

Full (54" x 75")

Also known as a Double, modern Full size mattresses are designed for single sleepers who want something more spacious than a Twin. Not long ago, the Full size mattress was the standard for couples; but with the introduction of the Queen, the Full has become obsolete for sharing. Some couples may still find certain Full size models viable, but the small price difference between a Full and a Queen is never worth the inferior comfort unless you have a space constraint so strict that the Queen simply won't fit. Full mattresses work well for active sleepers and children/teens during their transition years. Shop Full Size Mattresses

  • Designed for single sleepers
  • Wider than the Twin

Twin XL (38" x 80")

Twin XL size mattresses are the same width as the Twin, but 5-inches longer. Twin XL mattresses are intended for tall individuals who are not active sleepers and want a mattress that won't take up a lot of space in their bedroom. Twin XL size mattresses are not wide enough for sharing, but are recommended for growing teens or tall adults looking to save space and money. Shop Twin XL Size Mattresses

  • Designed for single sleepers
  • Extra long
  • Most affordable size for tall individuals

Twin (38" x 75")

Twin size mattresses are the smallest, and therefore least expensive, of the standard mattress sizes. Twin mattresses are designed for single sleepers who are not active during the night and want to save space in their bedroom, apartment, or dorm room. Twin size mattresses are not viable for sharing, but work well for kids and adults who don't need a spacious sleeping surface. Shop Twin Size Mattresses

  • Designed for single sleepers
  • Smallest standard mattress size
  • Most affordable standard mattress size

Custom Sizes (varies)

From the rare 3/4 size to antique sizes and other custom dimensions, US-Mattress has options outside of the seven standard mattress sizes to solve any and all of your sleeping needs. Whether you are looking for a mattress for your RV, semi-truck, boat, or an unusual room, you can custom order mattresses in specific sizes to suit your needs. Maybe you want an extra thin mattress to fit into a tight space, or a mattress with the width of a Twin and length of a Cal King, or have a custom or antique bed that is just a few inches off from a standard size. Whatever the case, check out our made to order mattresses to get the perfect custom size. Shop Custom Size Mattresses

When you know which size is right for you, you can begin to shop for your new mattress. Please note: all mattress manufacturers work on a 1-inch tolerance (except Corsicana, they have a 2-inch tolerance). Dimensions listed above could be up to 1-inch shorter and/or narrower than specified.