How many times a heart beats in a lifetime

Over a lifetime, a human heart may beat roughly 2.5 billion times. But 5.7 million liters is far too low for a lifetime total: at about 5 liters per minute, the heart pumps roughly 7,200 liters per day and over 200 million liters in 80 years. The actual total depends on lifespan, heart rate, and cardiac output.