How many times does the heart beat in a lifetime?

~2.7 billion beats

Biology

At a resting rate of 70 beats per minute the heart beats about 100,000 times a day, or roughly 2.7 billion times over 75 years. Across mammals, small animals have fast hearts and short lives, large animals the opposite, and the lifetime total comes out near 1 billion beats for most species. Humans are an outlier with about three times that.