What is the CHA₂DS₂-VASc score used for?

The CHA₂DS₂-VASc score estimates annual stroke risk in patients with non-valvular atrial fibrillation. It guides decisions about whether to initiate anticoagulation therapy. A score of 0 in males (or 1 in females) generally suggests anticoagulation is not needed.

When should I use TIMI vs GRACE for ACS?

Both are validated for acute coronary syndromes. TIMI is simpler and faster to calculate at the bedside. GRACE is more accurate for predicting in-hospital and 6-month mortality but requires more variables. Many institutions use GRACE for risk stratification and TIMI for quick triage.

How accurate is the Framingham Risk Score?

The Framingham Risk Score performs well in the populations it was derived from but may overestimate risk in low-risk populations and underestimate it in certain ethnic groups. The ASCVD Pooled Cohort Equations (PCE) are now recommended by ACC/AHA guidelines as the primary cardiovascular risk calculator.

Cardiology Calculators & Risk Scores

Assess cardiovascular risk with validated scoring tools including CHA₂DS₂-VASc, HAS-BLED, Framingham Risk Score, HEART Score, TIMI, and GRACE. These calculators help clinicians guide anticoagulation, statin therapy, and ACS management decisions.

This category currently includes 24 tools, including CHA₂DS₂-VASc Score, HAS-BLED Score, and Framingham Risk.

These resources are built for clinicians, trainees, and medically informed patients who need fast bedside calculations. Use the results as decision support and pair them with full clinical context and local guidelines.

All Cardiology Tools (24)

CHA₂DS₂-VASc Score

Calculate the CHA₂DS₂-VASc score to estimate stroke risk in patients with atrial fibrillation and guide anticoagulation therapy decisions.

HAS-BLED Score

Calculate the HAS-BLED score to assess bleeding risk in patients on anticoagulation therapy. Balance stroke prevention against bleeding risk.

Framingham Risk

Calculate 10-year cardiovascular disease risk with the Framingham Risk Score using age, cholesterol, blood pressure, smoking, and diabetes inputs.

HEART Score

Calculate the HEART Score to assess the risk of major adverse cardiac events (MACE) in patients presenting with chest pain.

Blood Pressure Calculator

Classify blood pressure readings into Normal, Elevated, Stage 1, Stage 2, or Hypertensive Crisis using ACC/AHA thresholds. Includes MAP and pulse pressure.

Heart Age Calculator

Estimate your heart age from major cardiovascular risk factors using ASCVD-based risk modeling. Compare vascular age with chronological age.

LDL Calculator

Enter total cholesterol, HDL, and triglycerides to calculate LDL-C via the Friedewald equation. Also calculates non-HDL and cholesterol ratios. Free, instant.

Cholesterol Ratio

Calculate total cholesterol/HDL ratio and triglyceride/HDL ratio from a standard lipid panel. A total/HDL ratio below 3.5 is optimal. For full cardiovascular risk assessment, use [ASCVD Risk Calculator](/tools/ascvd-risk) or [Framingham Risk Score](/tools/framingham-risk).

NYHA Classification

Classify heart failure severity using the New York Heart Association (NYHA) functional classification system. Classes I–IV based on physical activity limitations.

ASCVD Risk Calculator

Estimate 10-year ASCVD risk using the 2013 ACC/AHA Pooled Cohort Equations, with the risk thresholds from the 2018 AHA/ACC cholesterol guideline.

PREVENT Risk Calculator

Calculate 10-year total CVD, ASCVD, and heart failure risk with the AHA PREVENT equations (2024). Validated ages 30–79, includes eGFR and BMI, no race-based coefficients.

Duke Treadmill Score

Calculate the Duke Treadmill Score for cardiac risk stratification from exercise stress testing. Uses exercise time, ST deviation, and angina symptoms.

TIMI STEMI

Calculate the TIMI risk score for STEMI to predict 30-day mortality.

TIMI NSTEMI

Calculate the TIMI risk score for NSTEMI and unstable angina to predict 14-day adverse cardiac events.

GRACE Score

Calculate the GRACE score for in-hospital mortality risk in acute coronary syndrome patients.

TyG Index

Calculate the Triglyceride-Glucose (TyG) Index from fasting triglycerides and fasting glucose to assess insulin resistance patterns.

AIP Index

Calculate the Atherogenic Index of Plasma using triglycerides and HDL cholesterol to estimate atherogenic lipid risk.

CHADS2 Score

Estimate annual stroke risk in atrial fibrillation with the classic CHADS2 score (0-6) using five bedside factors.

Ankle-Brachial Index

Calculate ABI from ankle and brachial systolic pressures to support peripheral artery disease screening.

Cardiac Output

Calculate cardiac output and cardiac index from stroke volume, heart rate, and BSA. Normal CO 4-8 L/min, CI 2.5-4.0 L/min/m². Free hemodynamics calculator.

Ejection Fraction

Calculate left ventricular ejection fraction from end-diastolic and end-systolic volumes. Classify HFrEF (≤40%), HFmrEF (41-49%), and normal (≥55%) per 2022 ACC/AHA/HFSA criteria.

Aortic Valve Area

Calculate aortic valve area using the continuity equation from LVOT diameter and Doppler VTI measurements. Classify aortic stenosis severity: mild, moderate, severe.

Mitral Valve Area

Calculate mitral valve area from pressure half-time (MVA = 220/PHT). Classify mitral stenosis severity: mild, moderate, severe per echocardiography guidelines.

HF Staging (A-D)

Classify heart failure stage A (at risk), B (pre-HF/structural disease), C (symptomatic), or D (advanced) per ACC/AHA/HFSA guidelines. Free staging tool.

Frequently Asked Questions

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