A visual guide to finding the best mattress size for your room and needs, with insights from our sleep expert

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  • The best mattress size for your needs will depend on the size of your room, whether you sleep alone, and more.
  • Our mattress size chart and expertly curated recommendations will help you make the best selection.
  • Queen is the most popular mattress size because it is suitable for couples and expanding individuals.

Finding the right mattress size for your needs depends on several factors, including the size of your bedroom, your body size, whether you share a bed, and how much you like to lie on. Based on five years of professional mattress testing, I’ve outlined the six standard sizes in our mattress size chart below, and recommended the best use cases. I’ve also covered 10 less common mattress sizes and when you might want to consider them.

When buying a mattress, regardless of its size, always look for a long trial period at home. That way, if you find the mattress isn’t the right size for your needs, you can return it. See our guide to the best mattresses for our top picks.

Standard mattress sizes

Most mattresses are available in these six standard sizes. From smallest to largest they are:

Six standard mattress dimensions (Twin, Twin XL, Full, Queen, King, and California King)

Alyssa Powell/Insider

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