United States · market convention
California King bed dimensions
A US California King mattress measures 72 × 84 inches (182.9 × 213.4 cm). It is 4 inches narrower and 4 inches longer than a standard King.
Semrush US · 9,900 searches/mo · KD 25- Centimeters
- 182.9 × 213.4 cm
- Inches
- 72 × 84 in
- Feet & inches
- 6 ft 0 in × 7 ft 0 in
- Meters
- 1.829 × 2.134 m
- Area
- 3.9 m² · 42.01 ft²
- Source status
- high confidence · agrees
Nominal 72 × 84 in; narrower and longer than a US King.
California King changes the proportions
The Cal King trades four inches of King width for four inches of extra length. Its total mattress area is slightly smaller than a standard King.
King fitted sheets are not Cal King fitted sheets
Some flat sheets and top bedding share a King/California King label, but fitted sheets must match the different 72 × 84 in shape and the mattress depth.
Nearest international equivalents
What is closest to California King?
- Width
- +0.1 cm
- Length
- -10.4 cm
- Width
- -2.9 cm
- Length
- -13.4 cm
- Width
- -2.9 cm
- Length
- -13.4 cm
- Width
- -2.9 cm
- Length
- -13.4 cm
Bedding fit
Use the mattress measurements, not only “California King.”
Applicable market labels include California King, King/California King. These labels do not guarantee a particular finished sheet, duvet, comforter, blanket, or bedspread dimension.
For a fitted sheet, also measure mattress depth, topper, pad, and extra pocket allowance. For top bedding, choose the side and foot coverage you want.
Calculate bedding coverageQuestions, answered
Frequently asked questions
What are California King mattress measurements?
Nominal California King measurements are 72 × 84 inches, or about 183 × 213 cm.
Is California King bigger than King?
It is longer but narrower. A standard King has slightly more total surface area.