What size is a king size fitted sheet? Rebecca Leonard March 24, 2019 19:23 Updated Follow Our king size fitted sheets measure 150cm x 200cm. Shop king size fitted sheets. Related articles What is a deep fitted sheet? What size is a double fitted sheet? What size is a Superking fitted sheet? What materials are used to make our French bed linen and what are their benefits? Are all mattress toppers deep? Comments 0 comments Please sign in to leave a comment.