The total percentage of carbon present in our human body is?

• By mass, about 96 percent of our bodies are made of four key elements: oxygen (65 percent), carbon (18.5 percent), hydrogen (9.5 percent) and nitrogen (3.3 percent).

Carbon in human body

• In the human body, the element carbon is found in compounds rather than in its pure form.
• About 18 percent of the body's mass is carbon, and millions of carbon atoms make up the thousands of molecules in almost every cell.
• Carbon is the fundamental building block for proteins, carbohydrates, and fats, and it controls the body's physiology in a significant way.