Blood Pressure Calculator
Category, MAP and pulse pressure.
Enter your values
Enter the systolic in mmHg.
Enter the diastolic in mmHg.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Category
- Stage 1 hypertension
- Mean arterial pressure
- 97.3 mmHg
- Pulse pressure
- 46 mmHg
- Reading
- 128/82
Quick answer
Normal blood pressure is under 120/80; MAP estimates average perfusion pressure across the cardiac cycle.
MAP = DBP + (SBP − DBP)/3
At a glance
| What it does | Category, MAP and pulse pressure. |
|---|---|
| Category | Health |
| Inputs needed | Systolic, Diastolic |
| Main output | Category |
| Formula | MAP = DBP + (SBP − DBP)/3 |
| Cost | Free — no sign-up, no download |
How to use the Blood Pressure Calculator
- 1Sit still for five minutes before measuring.
- 2Enter the systolic (top) number.
- 3Enter the diastolic (bottom) number.
Inputs explained
- Systolic(mmHg)
- Enter the systolic in mmHg.
- Diastolic(mmHg)
- Enter the diastolic in mmHg.
Worked example
Using the values the calculator loads with:
Inputs
- Systolic128 mmHg
- Diastolic82 mmHg
Results
- CategoryStage 1 hypertension
- Mean arterial pressure97.3 mmHg
- Pulse pressure46 mmHg
- Reading128/82
Frequently asked questions
What is a healthy MAP?
Typically 70–100 mmHg; below 60 risks organ underperfusion.
Should I use one reading?
No — average several readings across different days.
What do I need to enter into the Blood Pressure Calculator?
Just 2 values: systolic, diastolic. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Blood Pressure Calculator work out the answer?
Normal blood pressure is under 120/80; MAP estimates average perfusion pressure across the cardiac cycle. It applies the formula MAP = DBP + (SBP − DBP)/3 and shows the working so you can check each step by hand.
Is the Blood Pressure Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.