Every tool on the site
All calculators
Critical Care / ICU
Mean Arterial Pressure
Estimate average arterial pressure during one cardiac cycle.→Med-Surg
BMI Calculator
Calculate body mass index from height and weight.→ER & Trauma
Glasgow Coma Scale
Score eye, verbal, and motor responses.→Critical Care / ICU
IV Drip Rate
Calculate gravity infusion flow in drops per minute.→Pediatrics
Weight-Based Dosing
Calculate a medication dose from mg/kg and patient weight.→Career & Pay
Hourly ↔ Annual Pay
Translate hourly nursing pay using a 36-hour workweek.→Conversions
°F ↔ °C
Convert temperatures with clinical fever references.→OB & L&D
Due Date
Estimate due date using Naegele’s Rule.→Critical Care / ICU
IV Pump Rate
Calculate the pump setting in milliliters per hour.→Critical Care / ICU
Drug Infusion Rate
Convert a weight-based dose in mcg/kg/min to a pump rate.→Med-Surg
Dosage (Desired ÷ Have)
Calculate tablets or milliliters from an ordered dose.→Med-Surg
Ideal Body Weight
Estimate ideal body weight from height using the Devine formula.→Med-Surg
Braden Scale
Score pressure-injury risk across six subscales.→Med-Surg
Intake & Output
Total fluid intake against output for a net balance.→ER & Trauma
Morse Fall Scale
Score fall risk across six clinical factors.→OB & L&D
Apgar Score
Score a newborn’s appearance, pulse, grimace, activity, and respiration.→OB & L&D
Gestational Age
Calculate how far along a pregnancy is today.→Pediatrics
Maintenance IV Fluids
Calculate hourly maintenance fluids with the 4-2-1 rule.→Palliative / Hospice
Palliative Performance Scale
Reference the PPS level that matches a patient’s function.→Career & Pay
Overtime & Differential Pay
Estimate weekly pay with overtime and shift differentials.→Conversions
kg ↔ lb
Convert weight between kilograms and pounds.→Conversions
mg ↔ mcg ↔ g
Convert medication amounts between metric units.→ER & Trauma
Parkland Burn Formula
Estimate 24-hour fluid resuscitation for burn patients.→ER & Trauma
Anion Gap
Calculate the anion gap from sodium, chloride, and bicarbonate.→ER & Trauma
Shock Index
Divide heart rate by systolic blood pressure.→Critical Care / ICU
Heparin Infusion Rate
Convert a units/kg/hr order into a pump rate.→Critical Care / ICU
Corrected Calcium
Adjust total calcium for a low albumin level.→Critical Care / ICU
Corrected Sodium
Adjust measured sodium for hyperglycemia.→Critical Care / ICU
RASS Sedation Scale
Reference the Richmond Agitation-Sedation Scale level.→Med-Surg
Creatinine Clearance
Estimate creatinine clearance with Cockcroft–Gault.→Med-Surg
Body Surface Area
Calculate BSA with the Mosteller formula.→Med-Surg
Adjusted Body Weight
Calculate adjusted body weight for medication dosing.→Med-Surg
Urine Output Rate
Convert measured urine volume into mL/kg/hr.→OB & L&D
Bishop Score
Score cervical readiness for labor induction.→Pediatrics
Pediatric Weight Estimate
Estimate a child’s weight from age when a scale isn’t possible.→Palliative / Hospice
Karnofsky Performance Status
Reference the KPS level that matches a patient’s function.→Palliative / Hospice
Opioid MME Reference
Convert a daily opioid dose into morphine milligram equivalents.→Career & Pay
Travel Contract Pay
Estimate weekly and contract pay from taxable rate plus stipends.→Conversions
Household ↔ Metric Volume
Convert teaspoons, tablespoons, ounces, and cups to milliliters.→Conversions
in ↔ cm
Convert height and length between inches and centimeters.→Med-Surg
MEWS Early Warning Score
Score vital signs to flag clinical deterioration early.→Med-Surg
CIWA-Ar Alcohol Withdrawal
Score alcohol-withdrawal severity across ten categories.→Pediatrics
FLACC Pain Scale
Score pain in patients who can’t self-report.→Critical Care / ICU
QTc Interval
Correct the QT interval for heart rate (Bazett).→OB & L&D
Oxytocin (Pitocin) Rate
Convert an ordered mU/min into a pump rate.→Critical Care / ICU
Infusion Rate (mg/hr · mcg/min · units/hr)
Convert non-weight-based infusion orders into pump rates.→Critical Care / ICU
P/F Ratio
Divide PaO₂ by FiO₂ to grade oxygenation.→Med-Surg
A1c ↔ Average Glucose
Translate an A1c percentage into estimated average glucose.→Med-Surg
Pack-Years
Calculate smoking history in pack-years.→Med-Surg
Wound Measurement
Calculate wound area and volume from length, width, and depth.→Med-Surg
Calorie & Protein Needs
Estimate daily calorie and protein needs from weight.→Conversions
Grains ↔ mg
Convert apothecary grains to milligrams.→Conversions
Solution Strength (% · ratio · mg/mL)
Convert between percent solutions, ratios, and mg/mL.→Career & Pay
Military Time Converter
Convert between 12-hour and 24-hour time.→Med-Surg
IV Infusion Time
Calculate when an infusion will finish.→Med-Surg
Reconstitution
Find the concentration and dose volume after mixing a powdered med.→Med-Surg
Absolute Neutrophil Count
Calculate ANC from WBC and differential.→Med-Surg
COWS Opioid Withdrawal
Score opioid-withdrawal severity across eleven items.→Med-Surg
Oxygen Tank Duration
Estimate how long a portable oxygen cylinder will last.→✓
For education & reference only. Always verify with institutional protocols.