Is Your Bed Long Enough? Mattress Length Calculator
Most sleepers need a mattress several inches longer than their height to stretch out. Enter your height to check the standard sizes.
Result
- Length you need
- 82 in (208 cm)
- Twin / Full (75 in)
- 7 in short
- Twin XL / Queen / King (80 in)
- 2 in short
- California King (84 in)
- Long enough
Pillows take up several inches at the head of the bed, which is why stretched-out sleepers need more spare length.
How this calculator works
Needed length = your height + the spare room you choose. We compare it with standard lengths: Twin and Full 75 in, Twin XL, Queen and King 80 in, California King 84 in.