No, a 5-foot bed is not king size. A standard king bed measures 76 inches wide by 80 inches long (approximately 6.3 feet wide by 6.7 feet long). A 5-foot bed would be significantly smaller—roughly 60 inches wide, which is actually the width of a full or double bed. King beds are among the largest standard mattress sizes available for residential use, designed to comfortably accommodate two adults with substantial sleeping space. If you're looking at a 5-foot bed, you're likely dealing with a full/double bed or possibly a smaller specialty size. The confusion might arise from mattress depth or from regional naming variations, but in standard North American sizing, 5 feet falls well short of king dimensions.