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How much blood is there in the average human?

How much blood is there in the average human?
Collis School Yr 6 from Surrey (age 5-14)


3 Responses

  1. Also – go to

    http://www.sciencemadefun.org.uk/blood.html to find out more 🙂

  2. The average man has around 5 litres (8 pints) of blood. Your blood is about 7.5% of your weight, so if you take your weight in kilograms and times it by 0.075 (7.5%) then that is how many litres of blood you have in your body….ish.

    Melissa Wragg

  3. In interesting fact is that people who live at high altitudes (a long way above sea level), where the air contains less oxygen, generally have a higher blood volume

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