how long is a full size mattress
A standard full size mattress (also called a double) is typically 75 inches long, which is about 6 feet 3 inches (190–191 cm).
Quick Scoop
- Standard full length: 75 inches long.
- Width (for context): 54 inches wide.
- Full XL option: A less common “Full XL” keeps the same width (54 inches) but is about 80 inches long for taller sleepers.
Common Mattress Size Lengths
Here’s how a full compares to other popular sizes:
| Mattress size | Width | Length |
|---|---|---|
| Twin | 38 inches | 75 inches |
| Full (Double) | 54 inches | 75 inches |
| Full XL | 54 inches | 80 inches |
| Queen | 60 inches | 80 inches |
| King | 76 inches | 80 inches |
Little Story-Style Example
Imagine laying on a twin bed and feeling your feet almost at the edge.
Now picture the same length, but with extra elbow room from side to
side—that’s basically what a full mattress gives you: twin length, but wider
and more comfortable for a single adult or teen.
TL;DR: A full size mattress is usually 75 inches long; if you’re tall and want more legroom, look for a “Full XL” at about 80 inches long.
Information gathered from public forums or data available on the internet and portrayed here.
