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Standard Bed Sizes/Measurements

Twin Size Twin XL Size Three Quarter Size Full Size Queen Size King Size Califorinia King Size
Bed Frame Size Bed Frame Dimensions
Twin 38" x 75"
Twin XL 38" x 80"
Three-Quarter 48" x 75"
Full 53" x 75"
Queen 60" x 80"
King 76" x 80"
California King 72" x 84"

Measure your Box Spring

It is important that you MEASURE YOUR BOX SPRING to make sure you order the correct size bed frame. Many of our bed frames are designed to fit one size only. (We do have a few bed frames that fits twin, full, queen, and king, but those are exceptions, not the rule.)

King and California King - They're Not the Same!

MEASURING YOUR BOX SPRING IS especially critical when you are ordering KING or CALIFORNIA KING size. There IS a difference in the bed dimensions.  The two sizes are often confused, even by people who sell furniture and bedding. If a salesperson tells you that he is selling you a KING size bed frame or mattress set, DO NOT take his word for it. We cannot stress enough how important it is to MEASURE YOUR BOX SPRING!

If you have a KING size box spring, it will be approximately 76" wide by 80" long. If you have a CALIFORNIA KING, your box spring will be approximately 72" wide by 84" long. We recommend measuring your box spring, rather than the mattress, because the box spring is the part that fits into the bed frame.

Mattress manufacturers began to "skimp" on the standard sizes of box springs and foundations in the last decade. We've seen full size box springs measuring as little as 52 inches wide and 74 inches long. Queen foundations or box springs are usually around 59 inches wide by 78 inches long, not the longtime standard of 60 inches wide X 80 inches long.

Some have responded to the width problem, but not the length problem. Some of our bed frame suppliers provide full size bed frames that only measure 53 inches wide. This is a big problem when we have a customer who has an old box spring. Older box springs (from the 1970's and even 1980's) measure the standard 54 inches wide, while today's newer foundations and box springs often measure only 52 - 53 inches wide. Many of our bed frames won't work with older foundations. Bed rail manufacturers have not responded to the ever-shrinking bedding issue. As queen box springs shrink in length from 80 inches to 79 to 78 inches, many of the queen bed rails are still 82 - 83 inches long, much to the frustration of our customers (and us!). It leaves more space at the end of the bed than some of our customers prefer.

Mattress manufacturers could stop skimping on sizes, but that is unlikely to happen. The bed frame manufacturers could make bed frames and rails to suit the "new," "standard" sizes. A little communication would help. Unfortunately,  retailers, like us, are left in the position of explaining these differences to our customers.

Now that you know how big each mattress size is, let our experts here at The Sleep Shop help you find the perfect mattress for you.  Head over to our Contact Us page or give us a call.  We'll be glad to answer any questions you may have.

While we can't sell you a mattress online, you can definitely look at all of the mattresses that we offer.  We carry top names like Serta, iComfort and Kingsdown.


Retail Store Location

Presently, most of our products are available for direct purchase either from our online store or from our retail store in Hudson, North Carolina.

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