Best Mattresses

Mattress Size Chart & Bed Dimensions

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A California king mattress measures 72 inches wide by 84 inches long, which is 4 inches narrower and 4 inches longer than a traditional king mattress. Most mattresses in our Best Mattresses of 2024 rating are available in a California king size. However, not all companies offer this size so your options are fewer. California king-sized bed frames, mattress protectors, and bed sheets may also be harder to find and a bit more expensive. When it comes to price though, California king mattresses typically cost the same as a traditional king mattress so there’s no major price hike to worry about.

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