Understanding How Much Blood the Human Body Contains
Blood is vital for transporting oxygen and nutrients throughout the human body. But have you ever wondered exactly how much blood the average person has? Quantifying the amount of blood in the human body provides insight into health and anatomy.
The Average Adult Has 4.7 to 5.5 Liters of Blood
Most medical sources estimate the average adult has between 4.7 and 5.5 liters (or 1.2 to 1.5 gallons) of blood. The normal range for men tends to be higher, with adult males having about 5 to 6 liters. Adult females average 4 to 5 liters. Children have lower volumes ranging from 3.5 liters at age 5 to 4.5 liters in their teenage years.
Blood Volume Varies by Body Weight and Size
Larger, taller people tend to have more blood than shorter, smaller people. A person's blood volume correlates strongly with their body surface area. Rough estimates say adult blood volume is between 65-77 ml per kg of body weight. Therefore, a 110 lb person may have 4.7 liters while a
Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a healthcare professional before starting any new treatment regimen.
Add Comment