All Calculators
Find the right medical calculator for your needs. Search by name, category, or keywords.
Built by EMTs, for EMTs
If these tools help you care for patients, your support helps keep them updated and free for everyone. All contributions go toward development and hosting — not corporate profit.
Calculate how long an oxygen tank will last based on tank size, pressure, and flow rate.
Determine appropriate i-gel supraglottic airway size based on patient height and estimated ideal weight.
Calculate IV drip rates in gtt/min and mL/hr from volume, time, and drop factor. Supports macro and micro drip tubing.
Assess and interpret vital signs against age-appropriate normal ranges with clinical alerts.
Rapid newborn assessment for delivery calls. Score Appearance, Pulse, Grimace, Activity, and Respirations.
Calculate Glasgow Coma Scale scores with automatic interpretation. Includes adult and pediatric scales.
Multi-scale stroke screening tool with FAST, BEFAST, Cincinnati, and NIHSS scales. Time-critical emergency assessment.
Calculate Shock Index (HR/SBP) for early detection of hemodynamic instability with severity classification.
Estimate pediatric weight using APLS age-based formulas or Broselow length-based color zones.
Calculate IV fluid resuscitation for burn patients using the Parkland formula. Includes Rule of Nines reference.
BMI Calculator
Calculate Body Mass Index and interpret results.
Medication Dosage Calculator
Calculate medication dosages based on weight and protocols.