Medical & Nursing Calculators
Clinical calculations require precision. Our 12 medical and nursing calculators cover essential bedside and lab computations used by healthcare professionals, nursing students, and medical trainees. Calculate BSA-based drug doses, correct calcium for albumin, compute anion gaps, find mean arterial pressure, set IV drip rates, determine creatinine clearance for renal dosing, convert blood sugar units, and analyze cholesterol ratios. All tools use standard clinical formulas and are for educational and reference purposes only.
Dosing & Administration
BSA dosing, drug dosage, IV drip rate, and pediatric weight tools.
BSA Dosing Calculator
Calculate drug doses based on body surface area.
Drug Dosage Calculator
Calculate medication doses by weight, concentration, and frequency.
IV Drip Rate Calculator
Calculate drops per minute and mL per hour for IV infusions.
Pediatric Weight Calculator
Estimate pediatric weight by age for emergency dosing.
Lab Values & Diagnostics
Corrected calcium, anion gap, creatinine clearance, and blood sugar conversion.
Corrected Calcium Calculator
Adjust calcium levels for low albumin using standard formulas.
Anion Gap Calculator
Calculate serum anion gap to evaluate metabolic acidosis.
Creatinine Clearance Calculator
Estimate kidney function using the Cockcroft-Gault equation.
Blood Sugar Converter
Convert blood glucose between mg/dL and mmol/L units.
Vital Signs & Risk Assessment
Mean arterial pressure, blood pressure, A1C, and cholesterol ratio.
Mean Arterial Pressure Calculator
Calculate MAP from systolic and diastolic blood pressure.
Blood Pressure Calculator
Classify blood pressure readings against clinical categories.
A1C Calculator
Convert between A1C percentage and estimated average glucose.
Cholesterol Ratio Calculator
Calculate total-to-HDL cholesterol ratio for cardiovascular risk.
This calculator is for informational purposes only and does not constitute financial, tax, or legal advice. Always consult a qualified professional for decisions specific to your situation.
Frequently Asked Questions
How is BSA used for drug dosing?
Body Surface Area (BSA) is used to calculate drug doses, especially for chemotherapy agents, because it correlates better with metabolic rate than body weight alone. The most common formula is the Du Bois formula: BSA = 0.007184 x height(cm)^0.725 x weight(kg)^0.425. Our BSA dosing calculator computes BSA and then applies the dose per square meter to determine the total dose.
What is the anion gap and why is it clinically important?
The anion gap is the difference between measured cations (sodium) and measured anions (chloride + bicarbonate) in the blood: AG = Na - (Cl + HCO3). A normal anion gap is 8-12 mEq/L. An elevated anion gap suggests metabolic acidosis from conditions like diabetic ketoacidosis, lactic acidosis, or toxic ingestions. Our calculator computes the gap and flags abnormal values.
How do I calculate IV drip rate?
IV drip rate in drops per minute is calculated as: (Volume in mL x Drop factor) / (Time in minutes). The drop factor depends on the tubing set — standard macrodrip sets deliver 10, 15, or 20 drops/mL, while microdrip sets deliver 60 drops/mL. Our IV drip rate calculator handles both macrodrip and microdrip calculations and converts between mL/hr and drops/min.
How is creatinine clearance calculated?
Creatinine clearance estimates kidney function and is calculated using the Cockcroft-Gault equation: CrCl = [(140 - age) x weight(kg)] / (72 x serum creatinine). For females, multiply the result by 0.85. This value is used to adjust drug dosing for patients with impaired kidney function. Our calculator applies the formula and accounts for sex differences automatically.