Can you fit a king size MATTRESS topper on a queen size bed?

No, a king size mattress topper will not fit on a queen size bed, as the dimensions differ significantly. A king size topper measures approximately 76 inches by 80 inches, while a queen size bed is about 60 inches by 80 inches. The width of the king topper would exceed the width of the queen mattress, making it incompatible.