Use these free educational calculators to understand an adult BMI estimate, calculate weight change, or interpret a single blood-pressure reading using current American Heart Association categories.
Health Calculators
Private, in-browser screening tools. Your entries are not saved.
Educational use only: Results are not a diagnosis and do not replace advice from a qualified healthcare professional.
Adult BMI checker
BMI is a screening measure, not a diagnosis, and may not reflect individual body composition or health risk.
Weight-change percentage
This describes change between two measurements; it does not determine whether a weight or rate of change is healthy.
Blood-pressure range checker
For nonpregnant adults. One reading cannot diagnose hypertension. Pregnancy uses different urgent thresholds; contact your maternity team for guidance.
American Heart Association guidance ↗About the blood-pressure categories
The checker follows the American Heart Association adult categories. A single measurement is only a snapshot. Diagnosis requires evaluation by a healthcare professional and often readings collected over time.