GB size atlas
United Kingdom bed and mattress sizes
United Kingdom uses 5 common sizes in this launch dataset. The exact numeric dimensions—not a translated label—are the reliable way to compare them internationally.
Semrush UK · 9,900 searches/mo · KD 40| Local size | Centimeters | Inches | Type | Source status |
|---|---|---|---|---|
| Single3 ft | 90 × 190 | 35.4 × 74.8 | market convention | agrees |
| Small DoubleThree-quarter, 4 ft | 120 × 190 | 47.2 × 74.8 | market convention | agrees |
| Double4 ft 6 | 135 × 190 | 53.1 × 74.8 | market convention | agrees |
| King5 ft | 150 × 200 | 59.1 × 78.7 | market convention | agrees |
| Super King6 ft | 180 × 200 | 70.9 × 78.7 | market convention | agrees |
Regional labels still vary.
Retailers can round metric conversions, offer special sizes, or use the same label for multiple lengths. Measure the actual mattress, bed frame, and bedding before purchasing.
International comparison
Closest does not mean interchangeable.
The nearest equivalent is calculated from width and length differences. Bedding compatibility also depends on mattress depth, product tolerances, cover construction, and the amount of drop or tuck you want.
Use the international converter to compare these records against every other country in the dataset.