Calculate burn extent, body surface area, and fluid estimates. Enter regions, weight, height, and age. Results appear instantly above the form for quick review.
| Case | Age Group | Weight (kg) | Height (cm) | Head/Neck % | Anterior Trunk % | Posterior Trunk % | Left Arm % | Right Arm % | Left Leg % | Right Leg % | Perineum % |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Example 1 | Adult | 70 | 175 | 0 | 50 | 0 | 25 | 0 | 0 | 0 | 0 |
| Example 2 | Child | 25 | 120 | 30 | 40 | 10 | 0 | 0 | 20 | 20 | 0 |
| Example 3 | Infant | 10 | 75 | 50 | 20 | 0 | 10 | 10 | 0 | 0 | 0 |
Body Surface Area: BSA = √((height in cm × weight in kg) ÷ 3600)
Total Burned TBSA: Sum of each regional share × burned fraction entered for that region.
Burned Surface Area in m²: Burned Area = BSA × (TBSA Burn % ÷ 100)
Parkland Fluid Estimate: Fluid for 24 hours = 4 × weight in kg × TBSA Burn %
Fluid Timing: Half is given in the first 8 hours. The remaining half is given over the next 16 hours.
This body surface area burn calculator helps estimate burn size fast. It combines body surface area, total burned percentage, and fluid planning. The page is useful for training, chart review, and emergency preparation. It gives a structured estimate from simple inputs.
The tool first estimates body surface area with the Mosteller equation. It then applies regional burn entries using age based body shares. That produces a total burned TBSA percentage. It also converts that percentage into burned surface area measured in square meters.
The page also estimates first day fluid needs with the Parkland formula. This value is shown for the full first day, the first eight hours, and the next sixteen hours. These numbers help with quick planning. They do not replace direct bedside assessment.
Adults and children do not have the same body region proportions. Head and leg shares change with age. That is why the calculator includes age group selection. Better region weighting produces a more useful burn estimate.
Many simple burn tools only ask for one final percentage. This page is more detailed. You can enter the burned portion of each body region. That makes partial burns easier to estimate. It also gives a clearer region by region breakdown.
This calculator fits education, triage review, case simulation, and documentation support. It can help students learn burn size methods. It can also help teams compare manual estimates with a repeatable method. The export options make record keeping easier.
Burn care depends on depth, inhalation injury, timing, urine output, and clinical response. This page does not assess those factors. Use it as a supporting calculator, not a final clinical order source. Serious burns need immediate specialist evaluation.
It estimates body surface area, total body surface area burned, burned area in square meters, and a first day fluid amount using the Parkland method.
Body surface area helps convert the burned percentage into actual surface area. That gives another way to understand burn extent, especially when comparing different body sizes.
No. It is an educational and planning tool. Final treatment decisions depend on patient condition, burn depth, inhalation injury, timing, urine output, and specialist review.
Body region proportions differ by age. Children have proportionally larger heads and smaller legs than adults. Different region weights improve the burn percentage estimate.
Enter the burned fraction for that region. For example, if half of the anterior trunk is burned, enter 50 for that region.
The page uses the Parkland estimate: 4 × weight in kilograms × TBSA burn percentage. It then divides the total into the first 8 hours and next 16 hours.
Yes. You can download the summary as a CSV file. You can also use the PDF button to print or save the result page as a PDF.
Large burns, facial burns, hand burns, perineal burns, electrical burns, chemical burns, inhalation concerns, or unstable patients need urgent expert assessment.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.