how much blood does the heart pump in a minute
1 An average heart pumps about 2.4 ounces (70 milliliters) of blood per beat of heart. 2  If 72 beats occur per minute, then about 1.3 gallons (5 Liters) of blood is pumped per minute. 3  About 1,900 gallons (7,200 Liters) of blood is pumped per day. About 1,900 gallons (7,200 Liters) of blood is pumped per day. 2  This adds up to almost 700,000 gallons (2,628,000 Liters) of blood per year and about 48 million gallons (184,086,000 liters) by a life span of 70 years.