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Nursing Calculators
 This page was last updated on 15-Jun-02

Main Menu / Study Aids / Nursing Calculators
 Study Aids:
 Nursing Calculators
eed help with conversions and calculating dosages?  These calculators offer you a great way to get in some extra practice before an exam, since you can check your work against the answer given.  Please remember that these calculators are intended to be used as a supplement to your studies.  All calculations must be confirmed before use and the suggested doses are not a substitute for clinical judgement.


Manuel's is a free site, developed by a nurse, that has some great calculators to get you on the right track:
  If The Volume To Give Is Unknown
  If The Volume To Give Is Known
PO Dosage Calculator (mL)
IV Dosage Calculator (mL)
IV Rate (gtt/min)
IV Rate (mcg/min)
IV Rate (mcg/kg/min)
IV Dose Calculator
Pediatric Dose Calculator
IV Dose (mcg/min)
IV Dose (mcg/kg/min)
IV Time (hrs)
BSA Calculator
Drug Absorption (Pka)
O.R. Fluid Requirements
NPO Fluid Replacement
Allowable Blood Loss
Estimated Blood Volume
F, C Conversions
Pounds to Kilograms
Inches to Centimeters
% Solution to mg/mL
Epinephrine Solutions to mg/mL
Apothecary/Household/Metric Equivalents
List of Common Drug Infusions and How They Are Given

Weill Cornell Medical Center

Weill Cornell Medical Center  has a variety of calculators and converters for your use, including:
Age from Date of Birth
A-a Gradient
Body-Mass Index
Body Surface Area
Bicarbonate & Base Excess
Basal Energy Expenditure:
Calcium Equivalents
Oxygen Content
Harris-Benedict Equation
Measurement Conversions:
Oxygenation Index
Creatinine Clearance:
Temp, Lngth, Wgt, Pressure
Peak Expiratory Flow
Ventilation Index
Schwartz Estimate
Emergency Medications
Drip-Rate Dose
Half-Life (Measured)
Serum Osmolality (Measured)
Weill Cornell Medical also lists links to other calculators not on their site, so it's a great resource to bookmark. has an incredible assortment of calculators and converters, as well as various scores.  If you can't find what you need on this page, you won't find it anywhere!  Here's what they've got:
Acid-Base Disturbance Graph
Alveolar-Arterial Oxygen Gradient
Anion Gap
Blood Alcohol Concentration
Blood Oxygen Content
Body Mass Index
Body Mass Index Calculator
Bradycardia Treatment Algorithm
Celsius to Fahrenheit
Cerebrospinal WBC Correction
Lumbar Puncture
Clinical Calculator
Factor IX Dosing
Factor VIII Dosing
Fahrenheit to Celsius
Free Water Deficit
GI Bleed Complication Risk
Heath Risk Calculator
Hypernatremia Treatment Algorithm
Hyponatremia Treatment Algorithm
Ionized Calcium Estimation
Kilograms to Pounds
MatWeb Tools
Maximum Allowable Blood Loss Calculator
Mean Arterial Pressure
Myocardial Infarction Probability (Goldman)
Nephrology Calculators
Opioid Drug Dosage Calculator
Pounds to Kilograms
Predicted Alveolar-Arterial Gradient For Age
Predicted Endotracheal Tube Size for Age
Predicted Peak Expiratory Flow in Females
Predicted Peak Expiratory Flow in Males
Pregnancy Calculator
Rash Diagnosis Algorithm
Room Air Alveolar-Arterial Gradient
Rule of Nines (burns)
Salicylate Toxicity Nomogram
Serum Osmolarity Estimation
Sodium Bicarbonate Replacement
Sodium Correction in Hyperglycemia
Trauma Score Calculator and Chart
Ventilated Bronchopulmonary Dysplasia Infant Mortality Calculator
Alvarado Appendicitis Score
Apache II Score
Apgar Score
Bleeding Probability After TPA for MI
Cardiac Arrest: Likelihood of Mortality & Neurologic Recovery
Community-Acquired Pneumonia Mortality Risk
Coronary Disease Probability
Crotalid Snakebite Severity Score
Croup Score
Geriatric Depression Scale (Koenig)
Glasgow Coma Scale
Mangled Extremity Severity score
Mini Mental Status Exam
NIH Stroke Scale
Pancreatitis Mortality Prediction (Ranson)
Strep Pharyngitis Probability Score
TWEAK Alcoholism Score
Trauma Score Survival Probability

Other Resources

Equianalgesic Drug Conversion Calculator
This nifty calculator allows you to enter multiple drugs and dosages and obtain the proper dosage when converting to a different drug.

Drug Strength Percentage Calculator
This calculator is used to find the percent strength of a drug (i.e., what % strength is 14 grams in 40 ml of solution).  The site also includes calculators for finding the active ingredient and drug proportions.

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