Blood Pressure Checker

Blood pressure is a vital health indicator measuring the force of blood against artery walls when your heart pumps. Systolic pressure (the upper number) represents peak pressure when the heart contracts, while diastolic pressure (the lower number) represents minimum pressure when the heart relaxes. Blood pressure readings are expressed in mmHg and are essential for ongoing health monitoring.

This tool classifies your blood pressure according to the Japanese Society of Hypertension 2019 guidelines (JSH2019) into 8 detailed categories: optimal, high normal, elevated, grade 1 hypertension, grade 2 hypertension, grade 3 hypertension, and isolated systolic hypertension. Based on solid medical evidence, the tool provides accurate classification instantly with color-coded results for easy understanding.

A key feature is full support for different measurement locations. Blood pressure measured in a clinic versus at home uses different clinical thresholds due to the white-coat effect and other environmental factors. Home blood pressure readings are typically assessed using criteria 5 mmHg lower than clinic measurements, so the same numerical reading may produce different classifications depending on measurement environment.

Uncontrolled hypertension often progresses silently yet significantly increases risk of stroke, heart attack, kidney disease, and other cardiovascular complications, making regular monitoring and consistent management absolutely essential. Results provided by this tool are for reference only — please consult a healthcare professional for definitive medical diagnosis and personalized treatment decisions.