Medical Calculators
Free, evidence-based clinical calculators with interpretation guidance. All formulas are referenced from peer-reviewed literature and clinical guidelines.
Renal
2 tools
General
3 tools
BMI
Calculate Body Mass Index (BMI) with WHO classification. Includes interpretation for adults and clinical considerations.
Corrected Ca
Calculates albumin-corrected calcium to estimate true calcium levels in patients with hypoalbuminemia.
MME Calculator
Calculate total daily morphine milligram equivalents (MME) to assess opioid overdose risk. Based on CDC opioid prescribing guidelines.
Mental Health
2 tools
PHQ-9
Patient Health Questionnaire-9 (PHQ-9) for depression screening and severity assessment. Validated tool for clinical use.
GAD-7
Generalized Anxiety Disorder 7-item (GAD-7) scale for anxiety screening and severity assessment. Validated clinical tool.
Cardiovascular
7 tools
Framingham
Estimates 10-year cardiovascular disease (CVD) risk using the Framingham Heart Study algorithm. Calculates risk based on age, sex, cholesterol levels, blood pressure, smoking status, and diabetes.
CHA₂DS₂-VASc
Calculates stroke risk in patients with atrial fibrillation to guide anticoagulation therapy decisions. Recommended by ACC/AHA/ESC guidelines.
Wells DVT
Calculates the probability of deep vein thrombosis (DVT) using the Wells criteria to guide diagnostic testing decisions.
ASCVD Risk
Calculates 10-year atherosclerotic cardiovascular disease (ASCVD) risk using the ACC/AHA Pooled Cohort Equations to guide statin therapy decisions.
HAS-BLED
Calculates bleeding risk in patients with atrial fibrillation on anticoagulation to help guide therapy decisions alongside stroke risk assessment.
Wells PE
Calculates the pre-test probability of pulmonary embolism (PE) using the Wells criteria to guide diagnostic testing decisions.
QTc
Calculates corrected QT interval (QTc) using multiple formulas to assess risk of torsades de pointes and guide medication management.
Clinical Disclaimer
These calculators are provided for educational and clinical decision support purposes only. Results should be interpreted in the context of individual patient circumstances. Always use clinical judgment and consult relevant guidelines. These tools do not replace professional medical advice, diagnosis, or treatment.
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