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Mattress Sizes

Learn which standard mattress size is right for you. Mattress heights vary by product; see specifications or your local retailer for height detailers.

Twin

Twin, or “single”, mattresses are ideal for kids' bedrooms, or rooms with bunk beds or day beds. Learn more, or compare mattress sizes using our size chart.

Full

Full, or "double", mattresses are great for your child’s room since the extra width compared to a twin mattress means your child will have more room to stretch as he/she grows. Learn more, or compare mattress sizes using our size chart.

Queen

A Serta queen mattress measures approximately 60" x 79.5". These measurements can vary by +/- 1/2". Size availability varies by product and retailer. Mattress heights vary by product, so please see your retailer for information on specific model height.

King

King mattresses are a great solution for the master bedroom, as the extra room can create a more luxurious sleep experience. Select Serta mattress models are available in California King as well. Learn more, or compare mattress sizes using our size chart.

Download Size Guide (PDF)

Mattress Sizes
Width × LengthStandard Size
38" × 74.5" Twin
38" × 79.5" Twin XL
53" × 74.5" Full
60" × 79.5" Queen
76" × 79.5" King
72" × 83.5" California King

Source: International Sleep Products Association (www.sleepproducts.org)