How much blood does a typical adult have in their body?

A typical adult has approximately 5 to 6 liters of blood in their body. This volume accounts for about 7% to 8% of a person's total body weight and can vary slightly depending on several factors, including age, sex, and body composition.

The average male has a larger blood volume than the average female, reflecting differences in body size and composition. Understanding the normal blood volume is essential for EMTs, as it helps gauge a patient's status in medical emergencies, especially in cases of trauma or severe blood loss. Knowledge of typical blood volume ranges aids in assessing the severity of hemorrhage and planning appropriate interventions to stabilize the patient.