The size of a human heart can vary based on factors such as age, sex, and overall body size. On average, an adult human heart is about the size of a fist, measuring approximately 12 centimeters (about 4.5 inches) in length and 8 to 10 centimeters (about 3 to 4 inches) in width. The weight of an adult heart typically ranges from 250 to 350 grams (about 9 to 12 ounces). In general, the hearts of women tend to be slightly smaller than those of men.
how big is a humans heart
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