Quick answer: A split California King uses two 36" × 84" mattresses side by side for a total of 72" × 84", the same footprint as a California King. It gives tall couples 4" more length than a split king, with independent mattresses that can each sit on their own adjustable base.
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Key takeaways
- Split Cal King = 2 × (36" × 84") = 72" × 84".
- It's 4" longer and 4" narrower overall than a split king.
- It's best for tall couples who want adjustable bases or different firmness.
- Bedding and bases are less common than split king, so confirm sizes first.
Split California King vs Split King
| Split California King | Split King | |
|---|---|---|
| Each mattress | 36" × 84" | 38" × 80" |
| Overall size | 72" × 84" | 76" × 80" |
| Best for | Taller sleepers | Wider sleeping space |
| Bedding availability | Less common | Widely available |
Not sure you need it split? Compare with a standard California King, or see the Split King guide.
Who is a split California King best for?
Couples where at least one partner is over about 6'2", who want to raise their head or feet independently, or who prefer different mattress feels. The 84" length gives tall sleepers room without moving to an oversized size.
Will a California King frame fit a split California King?
For two flat mattresses, yes. For adjustable bases you need a frame that leaves space for the bases to move, usually a surround or headboard-and-rails design built to the bases' dimensions. Shop California King beds and we can adapt the frame for split bases.
How we build split California King frames
Every Candace & Basil bed frame is bench-made in-house from solid maple hardwood — no particleboard or MDF — and built only after you order it. You choose the size, the headboard height (42" to 82"), the fabric and the finish, and we ship across the contiguous USA from our Miami showroom. If your size isn't listed on a product page, we build to your exact measurements.
Frequently asked questions
What are split California King dimensions?
Two 36 by 84 inch mattresses that together measure 72 by 84 inches.
Is a split Cal King bigger than a split King?
It is 4 inches longer but 4 inches narrower, with roughly the same sleep surface.
Do split California King adjustable bases exist?
Yes, many adjustable-base brands offer 36 by 84 inch bases. Check your model's exact measurements before ordering a frame.
What sheets fit a split California King?
Split California King sheet sets, which include two 36 by 84 inch fitted sheets and a California King flat sheet.
Can I order a custom split California King frame?
Yes. Candace & Basil builds frames to your mattress and base measurements.
Related reading: Specialty size beds guide · Split King bed frame · California King bed
Ready to build yours?
Browse our custom beds, request a custom quote, or call 1-800-961-1789. Visit us at 2334 NE 2nd Ave, Miami, FL 33137 (Mon–Fri 11am–6pm, Sat–Sun 11am–5pm).
