Burn Surface Area Calculator (Lund-Browder, adult)

Estimate total body surface area (TBSA) affected by a burn using the adult Lund-Browder simplified regional chart.

Head & neck burned

Left arm burned

Right arm burned

Front torso burned

Back torso burned

Left leg burned

Right leg burned

How to Use the Burn Surface Area Calculator (Lund-Browder, adult)

Mark each body region as burned (Yes) or not (No).
Click Calculate to see estimated TBSA percentage.

Use Cases

•Emergency medicine teaching.
•First-responder training.
•Nursing exam prep.

Formula

Adult percentages: head 7%, each arm 7%, front torso 13%, back torso 13%, each leg 17%. TBSA = sum of burned regions.

Frequently Asked Questions

Why Lund-Browder and not the Rule of Nines?

Lund-Browder is more accurate in children because head and limb proportions change with age. This adult version is simplified to full-region marking.

Does TBSA drive fluid resuscitation?

Yes — the Parkland formula uses TBSA × weight × 4 mL as the 24-hour crystalloid requirement. Accurate TBSA is critical to avoid under- or over-resuscitation.

Medical disclaimer

Educational only. Burn assessment and resuscitation must be performed by trained clinicians using validated charts and clinical judgement.