California King Bed Size: 72 × 84 in (183 × 213 cm) and the Room It Needs
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A California King mattress measures 72 × 84 inches (183 × 213 cm). Shared by two, that is 36 in of width each. To walk around it with a 24 in (60 cm) walkway on both sides and at the foot, the smallest room is 9.9 × 9.0 ft (≈ 89 sq ft).
California King dimensions
| Inches | Centimeters | Feet | |
|---|---|---|---|
| Width | 72 in | 183 cm | 6 ft |
| Length | 84 in | 213 cm | 7 ft |
| Surface | 6,048 sq in | 3.9 m² | 42 sq ft |
Mattress size. A frame or headboard usually adds 2–6 in per side, so check the frame’s listed dimensions.
Will a California King bed fit my room?
| Room | Fit with a 24 in walkway |
|---|---|
| 7 × 10 ft | ❌ Too tight with a 24 in walkway |
| 8 × 10 ft | ⚠️ Fits only pushed against a wall |
| 9 × 10 ft | ✅ Fits centered (walkway on both sides) |
| 10 × 10 ft | ✅ Fits centered (walkway on both sides) |
| 10 × 12 ft | ✅ Fits centered (walkway on both sides) |
| 11 × 12 ft | ✅ Fits centered (walkway on both sides) |
| 12 × 12 ft | ✅ Fits centered (walkway on both sides) |
| 12 × 14 ft | ✅ Fits centered (walkway on both sides) |
Centered means walkways on both sides and at the foot. Against a wall means one long side touches the wall. With a comfortable 30 in walkway, add about 6 in per walkway.
Next size down and up
- King (76 × 80 in): 4 in wider, 4 in shorter
See every size side by side in the bed size chart.
Check before you order
- Measure the room and subtract door swings, radiators and closet doors.
- Measure the way in. The door fit calculator checks doors and tight corners.
- Planning to store things under the bed? Use the under-bed storage calculator.
Checked 2026-11-13. Standard US mattress sizes from Casper, Home Depot and RTINGS size guides; walkway guidance from Wayfair and dimensions.com.
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