Your blood pressure reading tells you how much force your blood exerts against artery walls. High blood pressure (hypertension) is one of the most common and modifiable cardiovascular risk factors. This tool classifies your blood pressure using AHA/ACC 2017 guidelines and estimates your simplified cardiovascular risk profile.
Educational use only. This tool provides general information about blood pressure categories. It is not medical advice. Consult your healthcare provider for diagnosis and treatment decisions.
Check Your Blood Pressure
Blood Pressure Reading
Risk Factors (for ASCVD estimate)
Blood Pressure Assessment
| Category | Systolic | Diastolic |
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Cardiovascular Risk Estimate
This is a simplified educational estimate, not the clinical Pooled Cohort Equations. Discuss with your healthcare provider for accurate risk assessment.
Lifestyle Recommendations
Understanding Blood Pressure Categories
Blood pressure is measured in millimeters of mercury (mmHg) and recorded as two numbers: systolic (the pressure during heartbeats) over diastolic (the pressure between beats). The American Heart Association and American College of Cardiology updated their guidelines in 2017, lowering the threshold for hypertension from 140/90 to 130/80 mmHg — significantly expanding the number of people classified as hypertensive.
How to Take an Accurate BP Reading
For the most accurate home measurement: sit quietly for 5 minutes before testing, use a validated upper-arm cuff (not wrist), position your arm at heart level, take two readings 1 minute apart and average them, and measure at the same time each day. Avoid caffeine, exercise, and smoking for 30 minutes prior.
The Five AHA/ACC Blood Pressure Categories
Normal: Below 120/80 mmHg — maintain healthy lifestyle. Elevated: 120-129 systolic with diastolic below 80 — lifestyle changes recommended. Stage 1 Hypertension: 130-139 systolic or 80-89 diastolic — lifestyle changes required, medication may be appropriate. Stage 2 Hypertension: 140+ systolic or 90+ diastolic — medication typically recommended alongside lifestyle changes. Hypertensive Crisis: Above 180/120 — seek immediate medical attention.
The DASH Diet and Blood Pressure
The Dietary Approaches to Stop Hypertension (DASH) diet is the most evidence-backed dietary approach for lowering blood pressure. It emphasizes fruits, vegetables, whole grains, lean protein, and low-fat dairy while limiting sodium, saturated fat, and added sugars. Studies show DASH can reduce systolic BP by 8–14 mmHg — comparable to a single blood pressure medication.
FAQ
Is this blood pressure risk calculator free?
Yes, completely free with no signup required. No data is stored — all calculations happen in your browser.
Is this tool medical advice?
No. This tool provides general educational information about blood pressure categories and cardiovascular risk. It is not medical advice. Always consult your healthcare provider for diagnosis, treatment, or questions about your blood pressure.
What are the AHA/ACC blood pressure categories?
The American Heart Association and American College of Cardiology define five categories: Normal (below 120/80 mmHg), Elevated (120-129 systolic, below 80 diastolic), Stage 1 Hypertension (130-139/80-89), Stage 2 Hypertension (140+/90+ mmHg), and Hypertensive Crisis (above 180/120 mmHg requiring immediate medical attention.
What is ASCVD risk?
Atherosclerotic Cardiovascular Disease (ASCVD) risk is the estimated probability of experiencing a heart attack or stroke within the next 10 years. It is calculated using the Pooled Cohort Equations, which factor in age, sex, cholesterol levels, blood pressure, diabetes, and smoking status. A risk below 5% is considered low.
When should I seek emergency care for high blood pressure?
Seek immediate emergency care if your blood pressure is above 180/120 mmHg, especially with symptoms like chest pain, shortness of breath, sudden severe headache, vision changes, or weakness. This is a hypertensive crisis and requires immediate medical attention.
What lifestyle changes lower blood pressure?
The most effective lifestyle interventions are: reducing sodium intake to under 2,300 mg/day (the DASH diet reduces systolic BP by 8-14 mmHg), regular aerobic exercise (reduces by 4-9 mmHg), weight loss (each kg lost reduces systolic by about 1 mmHg), limiting alcohol, and quitting smoking.
At what blood pressure should I take medication?
Current AHA/ACC guidelines recommend medication consideration at Stage 1 hypertension (130-139/80-89) for individuals with high ASCVD risk, and for most people with Stage 2 hypertension (140+/90+). This is always a clinical decision made with your healthcare provider based on your full health picture.