Blood Pressure Checker
Understanding your blood pressure numbers is one of the most important things you can do for your heart health. Enter your systolic (top) and diastolic (bottom) numbers to see how your reading compares to American Heart Association guidelines. Get personalised lifestyle recommendations based on your category.
mmHg (70–250)
mmHg (40–150)
AHA Blood Pressure Categories
| Category | Systolic (mmHg) | Diastolic (mmHg) | |
|---|---|---|---|
| Normal | Less than 120 | AND | Less than 80 |
| Elevated | 120 - 129 | AND | Less than 80 |
| High BP Stage 1 | 130 - 139 | OR | 80 - 89 |
| High BP Stage 2 | 140 or higher | OR | 90 or higher |
| Hypertensive Crisis | Higher than 180 | AND/OR | Higher than 120 |
Source: American Heart Association (AHA) guidelines. When systolic and diastolic fall into different categories, the higher category applies.
How blood pressure classification works
Blood pressure is measured in millimeters of mercury (mmHg) and is recorded as two numbers: systolic (the pressure when your heart beats) over diastolic (the pressure when your heart rests between beats).
The American Heart Association defines five blood pressure categories. A reading is classified based on whichever number (systolic or diastolic) places it in the higher category. For example, a reading of 135/75 is classified as Stage 1 hypertension because the systolic value falls in that range, even though the diastolic is normal.
A single high reading does not necessarily mean you have high blood pressure. Blood pressure fluctuates throughout the day and can be affected by stress, caffeine, physical activity, and other factors. Your doctor will typically take multiple readings over time before making a diagnosis.
Medical Disclaimer
This tool is for informational purposes only and does not constitute medical advice. Blood pressure should be measured using a validated device with proper technique. Always consult a qualified healthcare professional for diagnosis and treatment of blood pressure conditions.
Blood Pressure Monitoring
Home blood pressure monitors, wrist cuffs, tracking logs, and heart-healthy supplements.
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Frequently Asked Questions
What is a normal blood pressure reading?
What are the blood pressure categories?
When should I check my blood pressure?
Can lifestyle changes lower blood pressure?
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