Fill in the details and click Calculate to see your results.
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📘 About the Blood Pressure Calculator
Blood pressure is written as systolic over diastolic — for example 120/80 mmHg. The American guideline (ACC/AHA 2017, kept in 2025) calls below 120/80 normal, 120–129 elevated, 130–139 or 80–89 stage 1 and 140/90 or higher stage 2 hypertension.
The European guideline (ESC 2024), also used widely in India, keeps 140/90 as the line for hypertension and calls 120–139/70–89 'elevated'. A single high reading is not a diagnosis: check several readings on different days.
✏️ Worked examples
128/82
You get| Category (ACC/AHA) | Stage 1 hypertension |
| Category (ESC 2024, also used in India) | Elevated |
| Mean arterial pressure | 97 mmHg |
| Pulse pressure | 46 mmHg |
Stage 1 hypertension; ESC: Elevated.
145/95
You get| Category (ACC/AHA) | Stage 2 hypertension |
| Category (ESC 2024, also used in India) | Hypertension |
| Mean arterial pressure | 112 mmHg |
| Pulse pressure | 50 mmHg |
Stage 2 hypertension.
🧭 How to use this calculator
What you enter
- Systolic (top number) (mmHg)
- Diastolic (bottom number) (mmHg)
What you get
- Category (ACC/AHA)
- Category (ESC 2024, also used in India)
- Mean arterial pressure
- Pulse pressure
❓ Frequently asked questions
Is 130/80 high blood pressure?
Under the American guideline 130/80 is stage 1 hypertension; under the European and Indian practice it is 'elevated' (high-normal). Lifestyle changes are advised either way.
What is normal BP by age?
The target is below 120/80 at every adult age. BP tends to rise with age, but readings of 140/90 or more are high at any age.
How should I measure BP at home?
Sit with your back supported and feet flat for 5 minutes, arm at heart level, no tea, coffee or smoking for 30 minutes. Take 2–3 readings a minute apart, morning and evening, for a week.