Blood Pressure Calculator

A blood pressure reading only means something once you know which category it falls into, and that classification is what this tool returns from your systolic and diastolic numbers. Placing yourself on that scale is the starting point for watching your cardiovascular health and acting early when something drifts. The need is widespread: under the American Heart Association's 2026 guidelines, nearly half of all adults in the US are projected to have hypertension, which makes routine checks more valuable than ever.

Classification here follows the standard adult criteria set by leading health organizations. You enter your systolic pressure, the top number that captures the force when your heart beats, alongside your diastolic pressure, the bottom number reflecting the rest between beats. Those two values are measured against established ranges and sorted into one of five bands: Normal, Elevated, Hypertension Stage 1, Hypertension Stage 2, or Hypertensive Crisis.

Technique shapes the reading, so sit quietly for a few minutes first and skip caffeine or exercise right beforehand. One caveat deserves emphasis: a single measurement yields a category, not a diagnosis, and repeated high results call for a healthcare professional. This tool is no substitute for that judgment, and it should never drive self-diagnosis or any change to medication on its own.