King vs. California King: How to Choose the Right Mattress Size

Both are big. Both cost more than a queen. But King and California King are different beds — different dimensions, different bedding, different room requirements. If you're choosing between them, the right answer depends on your height, your bedroom, and who you're sharing with.

Here's the full breakdown.

02Quick Answer

• King (76" × 80"): Wider. Better for couples who want maximum shared space. More bedding options.
• California King (72" × 84"): Longer. Better for tall sleepers (6'2" and up). Slightly narrower — can work better in longer, narrower rooms.

03Exact Dimensions Compared

The total square footage is almost identical — but the shape is different. The King trades 4 inches of length for 4 inches of width. For most people, that trade is invisible. For tall people, it isn't.

04King Size — Who It's For

The King (also called Eastern King) is the most widely available large mattress size in the US. It's wider than a California King, which makes it a better fit for couples who want maximum shared space — especially couples who sleep in different positions or tend to spread out.

Best for:

• Couples sharing a bed who want more personal space
• Families where kids or pets occasionally join
• Sleepers under 6'2" who don't need extra length
• Rooms that are more square in shape
• Shoppers who want the most bedding options available

Considerations:

• Requires a wide room — minimum 13 feet across is recommended for walking clearance on both sides
• Same length as a queen (80") — if you're tall, your feet may still hang off
• Widest standard bed size available — harder to move through narrow doors or hallways

Browse King mattresses at LA Mattress Store →

05California King — Who It's For

The California King is 4 inches longer than a standard King — 84 inches versus 80. That 4 inches matters a lot if you're 6'2" or taller. It also matters if you like extra foot room when sleeping on your back.

California Kings are particularly popular on the West Coast — partly because of the prevalence of longer, narrower master bedrooms in older California homes. The narrower width (72" versus 76") can actually help it fit better in certain room layouts.

Best for:

• Tall sleepers — 6'2" and above
• Couples where at least one partner is tall
• Longer or narrower master bedrooms
• Those who prioritize legroom over shoulder width
• Pet owners whose animals sleep at the foot of the bed

Considerations:

• Narrower than a King — 72" versus 76" — couples lose some shoulder-to-shoulder space
• Bedding and accessories are less universally available (though the selection has improved significantly)
• A bit rarer in entry-level price ranges — more limited selection than King at lower budgets

Browse California King mattresses at LA Mattress Store →

06Side-by-Side Comparison

07Room Size Requirements

Both sizes need a substantial room. Here's a practical guide:

• King: Works best in rooms at least 12' × 12'. Minimum 13' wide is ideal with nightstands on both sides and clearance to walk around.
• California King: Works best in rooms at least 12' × 14'. The extra length adds to the room depth requirement, not the width.

If your bedroom is roughly square (like 12' × 12'), the King typically fits better. If it's a longer rectangle (like 11' × 14'), the California King might actually work better — narrower width, longer length, same proportions as the room.

08Bedding and Accessories

King sheets, comforters, and bed skirts are sold at virtually every major retailer. You'll find more variety, more colors, and generally lower prices because the market is so much larger.

California King bedding is widely available online and at specialty retailers — including our stores. The selection has grown dramatically in recent years. You won't struggle to find sheets, but you'll have fewer impulse-buy options at a standard department store.

Practical note: King and California King sheets are not interchangeable. They're sized specifically for each mattress — don't assume one fits the other.

09How to Decide

Use this as your decision tree:

1. Are you (or your partner) 6'2" or taller? If yes, strongly consider California King.
2. Is your primary goal maximum space for two people? If yes, King is wider — go King.
3. Is your bedroom narrow (under 12 feet wide)? California King might fit better.
4. Do you want the most bedding options? King wins on availability.
5. Do pets sleep at the foot of the bed? California King gives them room without stealing yours.

If you're still not sure, the best thing to do is lie on both in person. Our showrooms carry King and California King options across multiple brands and firmness levels. Our team can show you how each one fits given your height and sleep style.

Find your nearest LA Mattress Store →

All purchases include our 120-Night Comfort Guarantee.

10Frequently Asked Questions

Is a King or California King bigger overall?

They're almost the same total size. A King is 6,080 square inches; a California King is 6,048. The difference is shape: King is wider, Cal King is longer.

What height is a California King recommended for?

Generally 6'2" and above. At 84 inches of length, you have 4 extra inches over a standard King — enough to keep feet off the edge for most tall sleepers.

Is California King more expensive than King?

Not meaningfully. Pricing is roughly comparable at most brands. Some entry-level options skew King-heavy, but in the mid-range and above, you'll find similar pricing.

Can I use King sheets on a California King?

No. They're different dimensions. King sheets won't fit a Cal King properly — the fitted sheet won't reach correctly. Always buy sheets labeled for your specific size.

Which is better for a couple?

If you're both under 6'2", King is typically better — the extra 4 inches of width adds more shared space than the Cal King's extra length would. If one or both partners are tall, Cal King is the better call.

Can I get an adjustable base in King or California King?

Yes. Both sizes are available as split configurations (two twin XL or split Cal King bases), which allows partners to adjust their side independently. Browse adjustable beds at LA Mattress Store.

What if I have a low-ceiling or tight hallway — will a King fit through?

King and California King mattresses are large and rigid enough to be challenging in tight hallways or stairwells. LA Mattress Store provides white glove delivery — our team handles setup and navigates the logistics. Contact us with questions about your specific layout.