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What are the Common Mattress Sizes?

When it’s time to buy a new mattress most people cannot remember which mattress size is bigger than the other. Is the Queen bigger than a Full? What size is a twin? And what is the difference between a King Mattress and a Cal King Mattress? Our chart and advice below should help guide you in what bed will fit into your room or space.

Mattress Sizes

Mattresses come in 6 common sizes. You may see a difference of 1” between different manufacturers but they’re all basically the same length and width for a given size. Just look at the chart and table below for the common dimensions…

Mattress TypeMattress Dimensions
Twin Mattress Size38” x 75” x 10”
Twin XL Mattress Size38” x 80” x 10”
Full Mattress Size54” x 75” x 10”
Queen Mattress Size60” x 80” x 10”
King Mattress Size76” x 80” x 10”
Cal King Mattress Size72” x 84” x 10”