King vs California King: Difference and Comparison

A standard king-size mattress measures 76 inches wide by 80 inches long, providing ample space for couples. On the other hand, a California king-size mattress is longer, measuring 72 inches wide by 84 inches long, offering more legroom but sacrificing width. The choice between the two depends on personal preferences and room size.

Key Takeaways

  1. King-size mattress measures 76 inches wide by 80 inches long.
  2. California king-size mattress measures 72 inches wide by 84 inches long.
  3. King-size mattress is wider, while California king-size mattress is longer.

King vs California King

King size mattresses are the widest of all standard sizes and offer ample space for couples to sleep comfortably, as well as extra space for those who like to stretch out. A California King size mattress is longer and narrower than a standard King size mattress, making it a good choice for taller individuals.

King vs California King


Comparison Table

FeatureKingCalifornia King
Dimensions (inches)76″ x 80″72″ x 84″
ShapeMore squareMore rectangular
Surface Area (sq. ft.)60.860.48
Best for:Couples who need more space to spread out, people who sleep diagonallyTaller sleepers (over 6 feet), narrow bedrooms
ProsWider, more space for each personLonger, better for taller sleepers
ConsMay not fit in all bedroomsMay not accommodate two people as well if they sleep very close together


What is King?


  • Width: A standard king-size mattress measures 76 inches (6 feet 4 inches) wide, providing plenty of space for two sleepers to spread out without feeling cramped.
  • Length: The length of a king-size mattress is 80 inches (6 feet 8 inches), offering sufficient space for taller individuals to stretch out comfortably.
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Comfort and Space:

  • Ideal for Couples: The generous width of a king-size mattress ensures that couples have enough room to sleep comfortably without disturbing each other’s sleep movements.
  • Accommodates Families: King-size mattresses are also suitable for families with children or pets, offering ample space for everyone to gather for bedtime stories or cuddle sessions.


  • Room Size: While a king-size mattress provides luxurious comfort, it requires a spacious bedroom to accommodate its large dimensions comfortably. It’s essential to consider the available floor space and furniture layout before choosing this size.

What is California King?


  • Width: Despite its name, a California king-size mattress is not wider than a standard king but is longer. It measures 72 inches (6 feet) wide, offering ample space for couples or individuals.
  • Length: The defining feature of a California king-size mattress is its extended length, measuring 84 inches (7 feet), providing extra legroom compared to a standard king.

Comfort and Space:

  • Taller Sleepers: The additional length of a California king-size mattress caters to taller individuals, allowing them to stretch out comfortably without worrying about their feet hanging off the end of the bed.
  • Room for Movement: The generous dimensions of a Cal king mattress provide plenty of space for couples to move around freely during sleep without feeling cramped, promoting uninterrupted rest.


  • Width vs. Length: While a California king-size mattress offers extra length, it sacrifices some width compared to a standard king. Individuals or couples who prioritize legroom over width may find this size more suitable for their needs.
  • Room Size: Like a standard king-size mattress, a California king requires a spacious bedroom to accommodate its larger dimensions comfortably. It’s crucial to consider the available floor space and furniture layout before opting for this size.
california king

Main Differences Between King and California King

  • Width:
    • King: 76 inches wide.
    • California King: 72 inches wide.
  • Length:
    • King: 80 inches long.
    • California King: 84 inches long.
  • Total Area:
    • King: Offers more overall surface area due to its greater width.
    • California King: Provides more length, suitable for taller individuals, but sacrifices some width.
  • Preference:
    • King: Ideal for couples who prefer ample width and have a wider bedroom space.
    • California King: Preferred by taller individuals or couples who prioritize extra legroom and have a longer bedroom space.
  • Room Size Requirement:
    • King: Requires a spacious bedroom to accommodate its wider dimensions comfortably.
    • California King: Requires a longer bedroom space due to its extended length.
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Last Updated : 05 March, 2024

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