Welcome to MDTools.org — 100+ Free Clinical Calculators

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Welcome!

MDTools.org is a free, open-source collection of over 100 clinical calculators and medical reference tools for healthcare professionals.

What We Offer

🏥 Clinical Calculators — BMI, eGFR (CKD-EPI 2021), A1C, GCS, CHADS₂-VASc, MELD, Child-Pugh, and 90+ more

💊 Drug Dosing — Vancomycin AUC, Heparin, Insulin, Semaglutide, Ketamine, Warfarin

🔬 Lab References — Normal ranges for Creatinine, Sodium, Potassium, CRP, BNP, Albumin, and more

🌍 Multilingual — Available in English and German at mdtools.org

Key Features

• ✅ No signup required
• ✅ No ads or tracking
• ✅ Evidence-based with cited literature
• ✅ Mobile-friendly
• ✅ Open source (MIT license)

Popular Tools

Calculator	Use Case
BMI Calculator	Body Mass Index with categories
eGFR Calculator	Kidney function (CKD-EPI 2021)
A1C Converter	HbA1c ↔ Average Blood Glucose
Corrected Calcium	Albumin-adjusted calcium
MELD Score	Liver disease severity
Anion Gap	Metabolic acidosis workup
QTc Calculator	Corrected QT interval
Creatinine Clearance	Cockcroft-Gault equation

Contributing

We welcome contributions! If you would like to:

• Report a bug — Open an issue
• Suggest a new calculator — Start a discussion in Ideas
• Contribute code — Submit a pull request
• Help with translations — We are expanding beyond English and German

Visit us at mdtools.org 🩺