Blood Pressure Calculator
Free blood pressure calculator. Check if your blood pressure is normal, elevated, or high. Get pulse pressure, MAP, and health recommendations.
mmHg
mmHg
bpm
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Last updated: January 2026
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Frequently Asked Questions
What do the two blood pressure numbers mean?
Systolic (top number) measures pressure when your heart beats. Diastolic (bottom number) measures pressure between beats. Normal is below 120/80 mmHg.
What is considered high blood pressure?
Stage 1 hypertension is 130-139/80-89 mmHg. Stage 2 is 140/90 mmHg or higher. A reading above 180/120 mmHg is a hypertensive crisis requiring immediate medical attention.
What causes high blood pressure?
Risk factors include high sodium intake, obesity, lack of exercise, smoking, stress, genetics, and age. Often called the 'silent killer' because it usually has no symptoms.
How can I lower my blood pressure naturally?
Reduce sodium to under 2,300mg daily, exercise 30 minutes most days, maintain healthy weight, limit alcohol, quit smoking, and manage stress through relaxation techniques.
When is the best time to measure blood pressure?
Measure in the morning before eating or taking medications, and again in the evening. Sit quietly for 5 minutes first, feet flat on floor, arm supported at heart level.