no, a California king is longer and narrower than a reg. king. the frame would be short on the sides and length
a king mattress is 76"x80" a California mattress is 72"x84" Making the Cal-king 4 inches longer, but 4 inches thinner.
A King (Eastern King) size mattress measures 76x80 inches or 198x203 cm. The California King (or Western King) is 72x84 inches or 183x213 cm. The above sizes are for North America, in Britain a king...
A California king comforter ranges in size but is roughly 104 inches wide x 98 inches long.
A King size mattress will measure approxmately 76 x 80.