Burn Severity Calculator 2025: Complete TBSA & Fluid Guide
Accurate burn assessment is critical for survival. Our Burn Severity Calculator uses the Lund-Browder chart to estimate TBSA, calculate fluid resuscitation via Parkland formula, and predict outcomes.
Burn Classification
| Degree | Depth | Appearance | TBSA Count |
|---|---|---|---|
| 1st | Superficial | Red, dry, painful | No |
| 2nd | Partial thickness | Blistered, moist, very painful | Yes |
| 3rd | Full thickness | White/leathery, painless | Yes |
| 4th | Bone/muscle | Charred | Yes |
TBSA Estimation Methods
- Rule of Nines: Quick for adults
- Lund-Browder: Most accurate, age-adjusted
- Patient’s palm: ~1% TBSA
Parkland Formula
First 24h fluid (mL) = 4 × weight (kg) × TBSA (%)
- 50% in first 8 hours
- 50% in next 16 hours
- Use Lactated Ringer’s
Burn Severity Levels
| TBSA | Adult | Child | Transfer |
|---|---|---|---|
| <10% | Minor | Moderate | No |
| 10–20% | Moderate | Major | Consider |
| >20% | Major | Major | Yes |
Prognosis Factors
- Age >60 or <2 years
- Inhalation injury
- TBSA >40%
- Comorbidities
Step-by-Step Assessment
- Ensure ABC (airway, breathing, circulation)
- Stop burning process
- Estimate TBSA using Lund-Browder
- Calculate fluids
- Assess for transfer
Common Errors
- Including 1st-degree burns in TBSA
- Underestimating pediatric head size
- Delaying fluid resuscitation
FAQs
When to transfer to burn center? TBSA >10%, 3rd degree, face/hands/genitals, inhalation.
Can I use Rule of Nines for children? No, use Lund-Browder.
Conclusion
Use our Burn Severity Calculator 2025 for rapid, accurate assessment. Always follow ABA guidelines and consult specialists. Start calculating now!
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