The nursing calculator
nurses actually trust.

22 free clinical tools for drug dosage, IV drip rate, ABG interpretation, unit conversion and more. No login. No ads. No waiting. Just the answer you need at the bedside.

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Most used tools
The calculators nurses reach for most
💊 #1 Most used

Drug Dosage Calculator

Calculate the exact volume of liquid medication to give from ordered dose and concentration.

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💧 Top IV tool

IV Drip Rate Calculator

Drops per minute for manual IV administration. Supports macrodrip and microdrip sets.

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🌡️ High traffic

Temperature Converter

Celsius to Fahrenheit and back instantly. Includes clinical fever and hypothermia ranges.

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📊 Popular

BMI Calculator

Body Mass Index with full WHO classification. Metric and imperial units supported.

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Browse by category
22 tools total
💊
Nursing

Drug Dosage Calculator

Calculate volume of liquid medication from ordered dose and available concentration.

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💧
Nursing

IV Drip Rate Calculator

Calculate drops per minute (gtt/min) for manual IV administration without an infusion pump.

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⚗️
Nursing

IV Flow Rate (mL/hr)

Calculate infusion pump rate in mL/hr from total volume and infusion duration.

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⏱️
Nursing

IV Infusion Duration

Calculate how long an IV bag will last given the volume and pump rate.

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🔵
Nursing

PO Dose — Tablets & Capsules

Calculate number of tablets or capsules to give from ordered dose and tablet strength.

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🩺
Nursing

mcg/kg/min → mL/hr

Vasopressor drip calculator for dopamine, dobutamine, norepinephrine and more.

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⚖️
Nursing

Ideal Body Weight (IBW)

Calculate ideal and adjusted body weight for accurate drug dosing in all patients.

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🔬
Nursing

ABG Interpreter

Interpret arterial blood gas results and identify respiratory or metabolic acid-base disorders.

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🧮
Nursing

Body Surface Area (BSA)

Calculate BSA using Mosteller formula. Essential for chemotherapy and paediatric dosing.

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🔥
Nursing

Parkland Formula (Burns)

Calculate 24-hour fluid resuscitation volume for burn patients using the Parkland formula.

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🧪
Nursing

Fluid Balance Calculator

Calculate net fluid balance by comparing total intake against output over 24 hours.

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🌡️
Converter

Temperature Converter

Convert between Celsius, Fahrenheit and Kelvin instantly. Includes clinical fever reference ranges.

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⚖️
Converter

Weight Converter — kg ↔ lb

Convert between kilograms and pounds instantly. Includes full reference conversion table.

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📏
Converter

Height Converter — cm ↔ ft/in

Convert height between centimetres and feet & inches for patient documentation.

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🩸
Converter

Blood Sugar Converter

Convert blood glucose between mg/dL and mmol/L with clinical diabetic reference ranges.

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🔄
Converter

Drug Unit Converter

Convert between g, mg, mcg, ng and body weight units for drug calculations.

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📊
Vitals

BMI Calculator

Calculate Body Mass Index with WHO classification. Metric and imperial units supported.

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❤️
Vitals

Mean Arterial Pressure (MAP)

Calculate MAP from systolic and diastolic readings to assess organ perfusion status.

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🤰
Vitals

Pregnancy Due Date Calculator

Calculate estimated due date from last menstrual period (LMP) or conception date.

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🫘
Renal

Creatinine Clearance (CrCl)

Estimate renal function using Cockcroft-Gault formula for drug dose adjustments.

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🔬
Renal

eGFR Estimator (MDRD)

Estimate GFR and CKD stage using the 4-variable MDRD equation.

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👶
Pediatric

Pediatric Dosage (mg/kg)

Calculate weight-based drug dose for paediatric patients from prescribed mg/kg dose.

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⚠️ Disclaimer: All calculators are for educational and reference purposes only. Always verify results with your institution's protocols and a qualified healthcare professional before any clinical decision.

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