King-size mattresses are one of the largest mattress options available at standard retailers, meaning they have large sheets to match. The mattress, fitted sheets, and bed skirt all measure a considerable 76 x 80 inches, which may seem small compared to its 102 x 112-inch flat sheets. Mattress – approximately 76” x 80” or 193 x 203 cm Fitted sheet – approximately 76” x 80” or 193 x 203 cm Flat sheet – approximately 102” x 112” or 259 x 284 cm Duvet cover – approximately 96” x 109” or 244 x 277 cm Bed skirt – approximately 76” x 80” or 193 x 203 cm
