MDCalc Medical Calculator

MDCalc is the leading clinical decision support app providing 900+ evidence-based calculators, risk scores, and clinical tools to support patient care at the bedside. MDCalc has been trusted by millions of clinicians since 2005.

Why Clinicians Choose MDCalc:

• Created by Physicians, for Physicians - All tools developed and validated by board-certified physicians
• 900+ Clinical Tools - Risk scores, algorithms, dosing calculators, and more with consistent updates and new tools added regularly
• Works Offline - Full functionality without internet connection
• Evidence-Based - Every tool includes research validation and expert commentary
• CME Tracking - Earn CME just by reading through the clinical content surrounding many of our tools
• Free Registration - Complete access in under 30 seconds

Key Features:

Smart Search & Organization
• Quick search across all tools
• Customizable favorites and specialty lists
• Recently used tools for quick access
• Auto-sync between web and mobile
• Explore page for personalized suggestions

Clinical Expertise
• Expert insights from creators
• Pearls & pitfalls from specialists
• Evidence summaries with PubMed links
• Error warnings and normal value ranges

Workflow Support
• Toggle between US and SI units instantly
• Works in limited connectivity settings
• Easy to use at the point-of-care

Popular Tools Include:
• Creatinine Clearance - Cockcroft-Gault Equation
• HA2DS2-VASc Score - Atrial Fibrillation Stroke Risk
• HEART Score- Major Cardiac Events
• Wells' Criteria - Pulmonary Embolism & DVT
• MELD Score - End-Stage Liver Disease
• HAS-BLED Score - Major Bleeding Risk
• SIRS/Sepsis Criteria - Septic Shock Assessment
• Mean Arterial Pressure - Hemodynamic Monitoring


MDCalc ensures only the highest-quality, clinically relevant tools make it into the app. Each calculator undergoes rigorous evidence appraisal and validation by our network of academic and practicing physician experts.