Skin is your body’s largest organ.
Adult skin covers about 1.7 square metres on average.
Skin does more than cover the body. Its outer layer helps keep water in and germs out. Deeper layers contain blood vessels and sensory receptors that help you feel pressure, pain, and temperature.
MedlinePlus estimates that the average adult has about 18 square feet of skin, or approximately 1.7 square metres.