When it comes to buying a new mattress, one of the most important decisions you’ll need to make is choosing the right size. With so many options available, it can be overwhelming to know which size is best for your needs. To help make the decision easier, we’ve put together a guide to all 13 standard mattress sizes.

1. Crib/Toddler

Dimensions: 27″ x 52″

2. Twin

Dimensions: 38″ x 75″

3. Twin XL

Dimensions: 38″ x 80″

4. Full/Double

Dimensions: 54″ x 75″

5. Full XL

Dimensions: 54″ x 80″

6. Queen

Dimensions: 60″ x 80″

7. Olympic Queen

Dimensions: 66″ x 80″

8. RV Queen

Dimensions: 60″ x 75″

9. King

Dimensions: 76″ x 80″

10. California King

Dimensions: 72″ x 84″

11. Split King

Dimensions: 76″ x 80″ (two 38″ x 80″ mattresses)

12. Split California King

Dimensions: 72″ x 84″ (two 36″ x 84″ mattresses)

13. Wyoming King

Dimensions: 84″ x 84″

Now that you know the dimensions of each standard mattress size, you can make an informed decision when shopping for a new mattress. Consider factors like the size of your bedroom, the number of people who will be sleeping in the bed, and your own personal preferences when choosing the right size for you. Sweet dreams!