Mattress Research Center > Mattress 101 > Difference Between King and Cal King

King vs California King Size Mattresses?

Simply put, a California King size mattress is 72 inches wide by 84 inches long (as opposed to 76 by 80 inches which is a standard King), making it the longest of the standard mattress sizes. California King size mattresses are still plenty wide enough to share (a foot wider than a Queen), and intended for tall people who want to ensure their feet don't hang off the end of the bed.

Here's a collection of our top-rated King and Cal King Mattresses


Cal King Serta Perfect Sleeper Regal Suite Double Sided Firm Mattress
Perfect Sleeper
(77)
$1,082.00
Free Delivery
King Serta Perfect Sleeper Regal Suite Double Sided Firm Mattress
Perfect Sleeper
(77)
$1,082.00
Free Delivery
Cal King Simmons Beautyrest Recharge World Class Phillipsburg II Luxury Firm Pillow Top Mattress
Beautyrest Recharge World Class
(56)
$1,728.00
Free Delivery
Cal King Simmons Beautyrest Recharge World Class Phillipsburg II Extra Firm Mattress
Beautyrest Recharge World Class
(67)
$1,625.00
Free Delivery
Cal King Simmons Beautyrest Recharge World Class Phillipsburg II Luxury Firm Mattress
Beautyrest Recharge World Class
(120)
$1,625.00
Free Delivery
Cal King Simmons Beautyrest Recharge World Class Phillipsburg II Plush Mattress
Beautyrest Recharge World Class
(54)
$1,625.00
Free Delivery
Cal King Serta Perfect Sleeper Sapphire Suite Double Sided Pillowtop Mattress
Perfect Sleeper
(111)
$1,421.00
Free Delivery
Cal King Simmons Beautyrest Recharge Lydia Manor II Luxury Firm Pillow Top Mattress
Beautyrest Recharge Ultra
(66)
$1,142.00
Free Delivery
Cal King Simmons Beautyrest Recharge Lydia Manor II Extra Firm Mattress
Beautyrest Recharge Ultra
(77)
$1,035.00
Free Delivery
Cal King Sealy Posturepedic Response Performance Cooper Mountain IV Plush Mattress
Response Performance
(76)
$960.00
Free Delivery
Cal King Sealy Posturepedic Response Performance Cooper Mountain IV Plush Pillow Top Mattress
Response Performance
(206)
$1,031.00
Free Delivery
Cal King Simmons Beautyrest Recharge Kenosha Place II Plush Pillow Top Mattress
Beautyrest Recharge
(135)
$917.00
Free Delivery
Cal King Sealy Posturepedic Response Performance Cooper Mountain IV Firm Mattress
Response Performance
(92)
$960.00
Free Delivery
Cal King Simmons Beautyrest Recharge Kenosha Place II Luxury Firm Mattress
Beautyrest Recharge
(100)
$841.00
Free Delivery
Cal King Simmons Beautyrest Recharge Kenosha Place II Plush Mattress
Beautyrest Recharge
(86)
$841.00
Free Delivery
Cal King Simmons Beautyrest Recharge Adda II Plush Mattress
Beautyrest Recharge
(165)
$730.00
Free Delivery
Cal King Simmons BeautySleep Solar Fest III Plush Mattress
BeautySleep
(52)
$684.00
Free Delivery
King Simmons Beautyrest Recharge World Class Phillipsburg II Luxury Firm Pillow Top Mattress
Beautyrest Recharge World Class
(56)
$1,728.00
Free Delivery
King Simmons Beautyrest Recharge World Class Phillipsburg II Extra Firm Mattress
Beautyrest Recharge World Class
(67)
$1,625.00
Free Delivery
King Simmons Beautyrest Recharge World Class Phillipsburg II Luxury Firm Mattress
Beautyrest Recharge World Class
(120)
$1,625.00
Free Delivery
King Simmons Beautyrest Recharge World Class Phillipsburg II Plush Mattress
Beautyrest Recharge World Class
(54)
$1,625.00
Free Delivery
King Serta Perfect Sleeper Sapphire Suite Double Sided Pillowtop Mattress
Perfect Sleeper
(111)
$1,421.00
Free Delivery
King Simmons Beautyrest Recharge Lydia Manor II Luxury Firm Pillow Top Mattress
Beautyrest Recharge Ultra
(66)
$1,142.00
Free Delivery
King Simmons Beautyrest Recharge Lydia Manor II Extra Firm Mattress
Beautyrest Recharge Ultra
(77)
$1,035.00
Free Delivery
King Sealy Posturepedic Response Performance Cooper Mountain IV Plush Mattress
Response Performance
(76)
$960.00
Free Delivery
King Sealy Posturepedic Response Performance Cooper Mountain IV Plush Pillow Top Mattress
Response Performance
(206)
$1,031.00
Free Delivery
King Simmons Beautyrest Recharge Kenosha Place II Plush Pillow Top Mattress
Beautyrest Recharge
(135)
$917.00
Free Delivery
King Sealy Posturepedic Response Performance Cooper Mountain IV Firm Mattress
Response Performance
(92)
$960.00
Free Delivery
King Simmons Beautyrest Recharge Kenosha Place II Luxury Firm Mattress
Beautyrest Recharge
(100)
$841.00
Free Delivery
King Simmons Beautyrest Recharge Kenosha Place II Plush Mattress
Beautyrest Recharge
(86)
$841.00
Free Delivery
King Simmons Beautyrest Recharge Adda II Plush Mattress
Beautyrest Recharge
(165)
$730.00
Free Delivery
King Simmons BeautySleep Solar Fest III Plush Mattress
BeautySleep
(52)
$684.00
Free Delivery
Cal King Serta Perfect Sleeper Regal Suite Double Sided Firm Mattress
Perfect Sleeper
(77)
$1,082.00
Free Delivery
King Serta Perfect Sleeper Regal Suite Double Sided Firm Mattress
Perfect Sleeper
(77)
$1,082.00
Free Delivery
Cal King Simmons Beautyrest Recharge World Class Phillipsburg II Luxury Firm Pillow Top Mattress
Beautyrest Recharge World Class
(56)
$1,728.00
Free Delivery
Cal King Simmons Beautyrest Recharge World Class Phillipsburg II Extra Firm Mattress
Beautyrest Recharge World Class
(67)
$1,625.00
Free Delivery
Cal King Simmons Beautyrest Recharge World Class Phillipsburg II Luxury Firm Mattress
Beautyrest Recharge World Class
(120)
$1,625.00
Free Delivery
Cal King Simmons Beautyrest Recharge World Class Phillipsburg II Plush Mattress
Beautyrest Recharge World Class
(54)
$1,625.00
Free Delivery
Cal King Serta Perfect Sleeper Sapphire Suite Double Sided Pillowtop Mattress
Perfect Sleeper
(111)
$1,421.00
Free Delivery
Cal King Simmons Beautyrest Recharge Lydia Manor II Luxury Firm Pillow Top Mattress
Beautyrest Recharge Ultra
(66)
$1,142.00
Free Delivery
Cal King Simmons Beautyrest Recharge Lydia Manor II Extra Firm Mattress
Beautyrest Recharge Ultra
(77)
$1,035.00
Free Delivery
Cal King Sealy Posturepedic Response Performance Cooper Mountain IV Plush Mattress
Response Performance
(76)
$960.00
Free Delivery
Cal King Sealy Posturepedic Response Performance Cooper Mountain IV Plush Pillow Top Mattress
Response Performance
(206)
$1,031.00
Free Delivery
Cal King Simmons Beautyrest Recharge Kenosha Place II Plush Pillow Top Mattress
Beautyrest Recharge
(135)
$917.00
Free Delivery
Cal King Sealy Posturepedic Response Performance Cooper Mountain IV Firm Mattress
Response Performance
(92)
$960.00
Free Delivery
Cal King Simmons Beautyrest Recharge Kenosha Place II Luxury Firm Mattress
Beautyrest Recharge
(100)
$841.00
Free Delivery
Cal King Simmons Beautyrest Recharge Kenosha Place II Plush Mattress
Beautyrest Recharge
(86)
$841.00
Free Delivery
Cal King Simmons Beautyrest Recharge Adda II Plush Mattress
Beautyrest Recharge
(165)
$730.00
Free Delivery
Cal King Simmons BeautySleep Solar Fest III Plush Mattress
BeautySleep
(52)
$684.00
Free Delivery
King Simmons Beautyrest Recharge World Class Phillipsburg II Luxury Firm Pillow Top Mattress
Beautyrest Recharge World Class
(56)
$1,728.00
Free Delivery
King Simmons Beautyrest Recharge World Class Phillipsburg II Extra Firm Mattress
Beautyrest Recharge World Class
(67)
$1,625.00
Free Delivery
King Simmons Beautyrest Recharge World Class Phillipsburg II Luxury Firm Mattress
Beautyrest Recharge World Class
(120)
$1,625.00
Free Delivery
King Simmons Beautyrest Recharge World Class Phillipsburg II Plush Mattress
Beautyrest Recharge World Class
(54)
$1,625.00
Free Delivery
King Serta Perfect Sleeper Sapphire Suite Double Sided Pillowtop Mattress
Perfect Sleeper
(111)
$1,421.00
Free Delivery
King Simmons Beautyrest Recharge Lydia Manor II Luxury Firm Pillow Top Mattress
Beautyrest Recharge Ultra
(66)
$1,142.00
Free Delivery
King Simmons Beautyrest Recharge Lydia Manor II Extra Firm Mattress
Beautyrest Recharge Ultra
(77)
$1,035.00
Free Delivery
King Sealy Posturepedic Response Performance Cooper Mountain IV Plush Mattress
Response Performance
(76)
$960.00
Free Delivery
King Sealy Posturepedic Response Performance Cooper Mountain IV Plush Pillow Top Mattress
Response Performance
(206)
$1,031.00
Free Delivery
King Simmons Beautyrest Recharge Kenosha Place II Plush Pillow Top Mattress
Beautyrest Recharge
(135)
$917.00
Free Delivery
King Sealy Posturepedic Response Performance Cooper Mountain IV Firm Mattress
Response Performance
(92)
$960.00
Free Delivery
King Simmons Beautyrest Recharge Kenosha Place II Luxury Firm Mattress
Beautyrest Recharge
(100)
$841.00
Free Delivery
King Simmons Beautyrest Recharge Kenosha Place II Plush Mattress
Beautyrest Recharge
(86)
$841.00
Free Delivery
King Simmons Beautyrest Recharge Adda II Plush Mattress
Beautyrest Recharge
(165)
$730.00
Free Delivery
King Simmons BeautySleep Solar Fest III Plush Mattress
BeautySleep
(52)
$684.00
Free Delivery


What is the difference between a King size and a California King size mattress? (Video Transcript)

One of the most common questions that we get here in the sales department is going to be the difference between a king size and a california king size and it is just basic dimensions. A king size which is also known as eastern king to some people is going to be the widest mattress at 76 inches wide by 80 inches long. A california king size is going to be 72 inches wide by 84 long making it the longest possible mattress, but it is 4 inches narrower. If you're 6 feet 2 inch or over, you'll probably going to want the extra length to make sure you're feet aren't hanging off the bed which is going to be the california king size. But if you have kids or dogs that like to sleep with you at night, like i do, you're definitely going to want the extra width of a regular king. Linen compatibility will be one of the concerns with switching sizes if you're going from a regular king up to a california king, you're going to need to get linens because the widths and the lengths are different and vice versa going from a california king down to a regular king. Feel free to give us a call with any other questions. Our number is 1-800-455-1052.

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