Parkland Formula Burn Fluid Resuscitation Calculator (4 mL & ABA 2 mL

Clinical Emergency Burn Management: The Parkland Resuscitation Protocol

Severe thermal trauma causes massive systemic capillary leak, third-spacing, and hypovolemic burn shock. Standardized crystalloid resuscitation restores intravascular volume while avoiding fluid overload:

• Choice of Crystalloid (Lactated Ringer's): Lactated Ringer's (LR) or balanced crystalloids (Plasma-Lyte) are strictly preferred over 0.9% Normal Saline because massive normal saline infusions trigger hyperchloremic non-gap metabolic acidosis and renal vasoconstriction.

• The Injury Clock (Crucial Rule): The 8-hour and 24-hour clocks begin at the exact moment the burn injury occurred, NOT when the patient arrived at the emergency department. If 3 hours elapsed prior to arrival, the first half of the fluid must be infused over the remaining 5 hours.

• Urine Output is the True Resuscitation Guide: The Parkland formula provides only an initial starting estimate. Fluid rates must be titrated up or down by 20% to 30% every hour based on Foley catheter urine output in adults, \ in children).

• Preventing Fluid Creep: Resuscitating with more fluid than necessary causes life-threatening complications, including intra-abdominal hypertension, abdominal compartment syndrome, ocular compartment syndrome, and acute respiratory distress syndrome (ARDS).

How to Use This Calculator

Enter your Patient Body Weight (kg) (e.g. 75 kg (or convert from lbs)), Total Body Surface Area Burned - %TBSA (2nd & 3rd Degree Only) (e.g. 30% (Do not include 1st degree sunburns)), Clinical Guideline Formula — select from Classic Parkland / Baxter Formula (4 mL / kg / %TBSA), Modern ABA Consensus Standard (2 mL / kg / %TBSA for Adults), Pediatric Burn Guideline (3 mL / kg / %TBSA + Maintenance), and Time Elapsed Since Burn Injury Occurred (Hours) (e.g. 2 hours (Infusion clock starts at time of injury)). Results update instantly — no submit button needed. Use metric or imperial units as labeled. For the most accurate result, measure height and weight in the morning without shoes.

The Formula

Parkland & ABA Burn Fluid Resuscitation formulas:

Total 24-Hour IV Volume (mL) = k × Weight (kg) × \%TBSA Burn

where k = 4 mL (Classic Parkland), 2 mL (ABA Adult Consensus), 3 mL (Pediatric).

First 8 Hours Volume = 0.50 × Total 24-Hour Volume

Initial Flow Rate (mL/hr) = (First 8 Hours Volume) / (8 - Hours Elapsed Since Burn)

Remaining 16 Hours Volume = 0.50 × Total 24-Hour Volume

Second Flow Rate (mL/hr) = (Remaining 16 Hours Volume) / (16 Hours)

Adult Target Urine Output = 0.5 mL/kg/hr (30 - 50 mL/hr)

Worked Example

For example, evaluating a 75 kg adult with 30% TBSA burns presenting 2 hours after the thermal injury using the classic Parkland formula (4 mL): Total 24-hour Lactated Ringer's volume is . The first 8-hour volume is 4,500 mL, delivered over the remaining 6 hours at . The remaining 4,500 mL is infused over 16 hours at .

Understanding Your Result

The National Academies recommends approximately 3.7 liters (125 oz) total water per day for men and 2.7 liters (91 oz) for women from all sources (food contributes ~20%). These are population averages — actual needs increase with exercise (add 0.4–0.8L per hour of activity), heat exposure, breastfeeding, and illness. Urine color is a reliable real-time hydration indicator: pale straw (1–3 on a 1–8 scale) indicates adequate hydration; dark yellow to amber indicates mild to moderate dehydration.