Professional-grade medical calculation tools for healthcare professionals and patients. Accurate, reliable, and easy-to-use calculators for better patient care.
Two physicians and a certified professional coder who shape CalcMD's clinical voice, evidence review, and coding accuracy.

Physician & clinical reviewer
Reviews calculator logic, clinical interpretation, and alignment with major guidelines so bedside recommendations stay defensible.

Physician & evidence lead
Sources peer-reviewed literature and validation studies, and flags when formulas need updates as practice changes.

Medical coder
Ensures documentation and coding context behind clinical scenarios stay accurate for billing, severity, and regulatory nuance where tools touch real-world workflows.
Most frequently used medical calculators by healthcare professionals
Calculate Body Mass Index for adults and children
Calculate target heart rate zones for exercise
Assess newborn health immediately after birth
Calculate kidney function using Cockcroft-Gault equation
Calculate glomerular filtration rate using the MDRD Study equation for kidney function assessment
Calculate MAP for hemodynamic assessment and organ perfusion
We're committed to providing the most accurate and reliable medical calculation tools
All calculations are based on peer-reviewed medical literature and clinical guidelines
Used by thousands of healthcare professionals worldwide
Regularly updated with the latest medical research and guidelines
24/7 access to critical medical calculations when you need them most
Join thousands of healthcare professionals who trust our medical calculators
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