TBSA Burns Calculator — Rule of Nines and Lund-Browder

Estimate total body surface area (TBSA) burned using the Rule of Nines for adults and the Lund-Browder chart for pediatric patients to guide fluid resuscitation and transfer decisions.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Estimate total body surface area (TBSA) burned using the Rule of Nines for adults and the Lund-Browder chart for pediatric patients to guide fluid resuscitation and transfer decisions

Each component has a specific meaning:

  • Rule of Nines — The rule of nines recorded for the scenario being assessed.

Note: Interpret the tbsa calculator result against the thresholds and context described above.

How to Use

Enter the Rule of Nines for the scenario you are assessing. Estimate total body surface area (TBSA) burned using the Rule of Nines for adults and the Lund-Browder chart for pediatric patients to guide fluid resuscitation and transfer decisions. Use the tbsa calculator result to inform your calculation.

Frequently Asked Questions