MATTRESS SIZE REFERENCE GUIDE
An Industry Trade Association has established standards for mattress sizes that includes allowable variances. Below is a detailed explanation of these standards.
MATTRESS VARIATION STANDARDS
The chart below outlines mattress sizes as per industry standards with acceptable variance ranges.
Finished Mattress Sizing Variations
| Mattress Size |
Industry Standard Dimensions (+/-1/2") |
Allowable Variance (Length & Width) |
Min. Width |
Min. Length |
| Twin |
38" x 74.5" |
-0.5" |
37.5" |
74" |
| Twin XL |
38" x 79.5" |
-0.5" |
37.5" |
79" |
| Full |
53" x 74.5" |
-0.5" |
52.5" |
74" |
| Queen |
60" x 79.5" |
-0.75" |
59.25" |
78.75" |
| King |
76" x 79.5" |
-0.75" |
75.25" |
78.75" |
| Cal King |
72" x 83.5" |
-0.75" |
71.25" |
82.75" |
- All dimensions are in inches.
- Finished sizes are measured from outside to outside of tape edge at the centerlines of the width and length.
- The distance is measured between extreme outside edges of finished construction.
