Blood Volume Table: Estimated blood volume by Body weight
Reference table of estimated blood volume for Blood Volume across a range of body weight values — exact, engine-computed figures you can read off at a glance.
Blood Volume Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Estimated blood volume
4,900
- In litres
- 4.90
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Blood Volume Calculator
The Blood Volume Calculator works out your estimated blood volume, along with 1 related figure in an instant. Enter body weight and sex and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the body weight.
- Choose the sex.
- Read off your estimated blood volume, together with in litres — the calculator updates automatically, with no button to press.
Formula
The Blood Volume Calculator uses the formula:
Estimated blood volume = Body weight × Sex
Worked example
For example, with body weight of 70 kg and sex of Adult male (70 ml/kg), the estimated blood volume is 4,900.
| Body weight | 70 kg |
|---|---|
| Sex | Adult male (70 ml/kg) |
| Estimated blood volume | 4,900 |
|---|---|
| In litres | 4.90 |
Results are estimates for educational use, not professional advice.
Key terms explained
- Volume
- The amount of three-dimensional space an object occupies, measured in cubic units.
Frequently asked questions
Multiply body weight by a per-kilogram factor — about 70 ml/kg for men, 65 for women and 75 for children. A 70 kg man has about 4.9 litres.
An average adult has roughly 4.5 to 5.5 litres, around 7–8% of body weight.
Body composition varies, so men, women and children have slightly different blood volumes per kilogram.
It is an estimate for general use. Clinical blood volume is found with more detailed formulas or direct measurement.
The Blood Volume Calculator uses the formula: Estimated blood volume = Body weight × Sex. For example, with body weight of 70 kg and sex of Adult male (70 ml/kg), the estimated blood volume is 4,900.
Enter the body weight. Choose the sex. Read off your estimated blood volume, together with in litres — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Blood Volume: Formula, Steps & Examples
Learn how to calculate Blood Volume — the formula explained step by step, with worked examples and a free calculator to check your answer.