See our handy chart below that visually demonstrate each size's dimensions:
- A twin mattress is 38” wide by 75” long
- A twin XL mattress is 38” wide by 80” long
- A full mattress is 54” wide by 74” long
- A queen mattress is 60” wide by 80” long
- A king mattress is 76” wide by 80” long
- A California king mattress is 72” wide by 84” long
To help find the best size mattress for you:
- Read our mattress buying guide
- Take our mattress quiz
- Chat with a Mattress expert