Pediatric Epinephrine Dose Calculator

Epinephrine is a time-critical medicine used in several pediatric emergencies, but the dose, route, concentration, and maximum depend on the indication. This calculator separates three common protocol calculations. For anaphylaxis, it estimates 0.01 mg/kg of the 1 mg/mL product by the intramuscular route, with a maximum of 0.5 mg. For cardiac arrest, it estimates 0.01 mg/kg by the intravenous or intraosseous route using the 0.1 mg/mL concentration, with a maximum of 1 mg. For severe croup, it estimates nebulized epinephrine at 0.5 mL/kg of the 1 mg/mL product, with a maximum volume of 5 mL. These regimens are not interchangeable. The 1 mg/mL and 0.1 mg/mL preparations differ by a factor of ten, and selecting the wrong concentration can cause a life-threatening error. The route is equally important: intramuscular epinephrine is the first-line route for anaphylaxis, while cardiac arrest dosing is given through IV or IO access under a resuscitation algorithm. Nebulized treatment for severe croup uses a different volume-based regimen and requires clinical observation because symptoms can recur. In suspected anaphylaxis, emergency treatment should not be delayed while using an online calculator. Activate emergency services, follow the applicable action plan, and use an available prescribed autoinjector when appropriate. Repeat dosing, airway management, fluids, oxygen, monitoring, and transport are determined by the response and local emergency guidance. In cardiac arrest, epinephrine is only one part of high-quality resuscitation, which prioritizes immediate CPR, rhythm assessment, defibrillation when indicated, and protocol timing. Severe croup with stridor at rest, respiratory fatigue, cyanosis, altered responsiveness, or poor air movement needs urgent professional care. The calculated number must be checked against the actual product label, patient weight, local guideline, age restrictions, maximum, and delivery device. Prefilled syringes and ampules may be labeled in ways that invite concentration confusion, so clinicians should communicate both milligrams and milliliters and perform an independent check whenever circumstances allow. This tool supports educational review and arithmetic verification; it does not diagnose an emergency, prescribe treatment, or replace trained judgment. If a child may need epinephrine now, seek emergency help and follow an established medical plan immediately.