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Blood Volume Calculator

Health & Body

Estimated blood volume by weight and sex

Quick Answer

Blood Volume Calculator: Estimated blood volume by weight and sex. Blood Volume Calculator uses standard health formulas to compute accurate results instantly.

Basics

kg
Estimated volume4.90L
Per-kg factor70mL/kg
450mL donation share9.2%

How it works

  1. 1Factor: male 70 mL/kg
  2. 2Volume = 70 × 70 = 4900 mL ≈ 4.90 L
  3. 3A 450mL donation is 9.2% of volume, safely compensated in healthy adults
This is a population average with ±10% individual spread; clinical blood-loss assessment uses vitals and shock index, not weight alone. Use ideal body weight when 30%+ above it.

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How to Use

  1. Enter body metrics: fill height, weight, age etc. as prompted by the Blood Volume Calculator.
  2. Read value and grade: results appear instantly with an authority-based classification.
  3. Check reference tables: confirm your range and healthy targets against the tables on this page.
  4. Back-solve your goal: adjust inputs to see what it takes to reach a target.

Key Points

  • Blood Volume Calculator is a free online health tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: Estimated blood volume by weight and sex.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Blood Volume Calculator formula

Blood Volume Calculator uses standard health formulas to compute accurate results instantly.

FAQ

How do I use the Blood Volume Calculator?
Open the page and fill in the input fields — results update automatically. Estimated blood volume by weight and sex.
Are the results accurate?
Results follow published international standards (WHO, ACE, IOM) and are for reference only.
Can this replace medical advice?
No. Always consult a qualified healthcare professional for health decisions.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on all devices.

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Source & Updates

Based on WHO, ACE, IOM and other published international standards. Last updated: 2025-07

Authoritative sources:

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Blood Volume Calculator[EB/OL]. https://www.yijiansuan.com/en/c/health/blood-volume

Results provided by this tool are for reference only and do not constitute professional advice.