A research team led by Dr. Sadiya Khan at Northwestern University has launched a free online heart-age calculatorthat estimates the biological age of a person’s heart using the American Heart Association’s PREVENT equations. The tool factors in blood pressure, cholesterol, diabetes status, and smoking habits to provide an intuitive health risk measure.

In a study of over 14,000 U.S. adults aged 30–79 without prior heart disease, results showed that men had hearts on average seven years older than their actual age, while women’s hearts averaged four years older. The age gap was wider among Black and Hispanic individuals and those with lower education levels.

Experts say converting complex percentage-based cardiovascular risk into a relatable “heart age” helps patients understand their health and initiate more meaningful conversations with doctors. While it omits certain factors—such as fitness levels or female-specific markers—it can still encourage preventive steps like improving diet, exercising, and scheduling medical checkups.

Previous use of similar tools abroad, such as in Australia, has shown strong engagement and self-reported lifestyle changes. Researchers believe this calculator could transform preventive heart care discussions, though follow-up support will be essential for lasting impact.