Estimated Plasma Volume Calculator
Estimate plasma volume from body weight and hematocrit.
Estimated Plasma Volume measurements
Enter your values, then calculate.
Result
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Enter your measurements above to calculate.
CategoryBiology
Inputs2
CalculationIn browser
How to calculate estimated plasma volume
This calculator estimates plasma volume from body weight and hematocrit.
How the calculation works
Plasma volume = (Weight × 70 × (1 − Hematocrit÷100)) ÷ 1000.
Example
70kg, 45% hematocrit: (70×70×0.55)÷1000 ≈ 2.7 L.
Frequently asked questions
How is Result calculated?
Result = [Weight] × 70 × (1 − [Hematocrit] ÷ 100) ÷ 1000.
Is the Estimated Plasma Volume Calculator free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Quick Insight
Estimated Plasma Volume Calculator
Plasma volume = (Weight × 70 × (1 − Hematocrit÷100)) ÷ 1000.
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Let's understand your estimated plasma volume result.
Your personalized explanation
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Estimated Plasma Volume
- Uses a standard 70 mL/kg blood volume estimate — individual variation exists.
- Higher hematocrit lowers calculated plasma volume for the same total blood volume.
Common Estimated Plasma Volume Mistakes to Avoid
- Entering hematocrit as a decimal instead of a percentage, since this formula expects percentage form.
When to Use This Calculator
This calculator estimates plasma volume from body weight and hematocrit.
Content reviewed: August 2026 · Robert Threadgill