Mean Arterial Pressure Calculator
Calculate MAP from systolic and diastolic BP.
Enter your values
Enter the systolic bp in mmHg.
Enter the diastolic bp 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.
- Mean arterial pressure
- 93.3 mmHg
- Interpretation
- Normal range
Quick answer
Mean arterial pressure represents the average pressure in the arteries during one cardiac cycle.
MAP = DBP + 1/3 (SBP - DBP)
At a glance
| What it does | Calculate MAP from systolic and diastolic BP. |
|---|---|
| Category | Health |
| Inputs needed | Systolic BP, Diastolic BP |
| Main output | Mean arterial pressure |
| Formula | MAP = DBP + 1/3 (SBP - DBP) |
| Cost | Free — no sign-up, no download |
How to use the Mean Arterial Pressure Calculator
- 1Enter systolic and diastolic blood pressure from a validated reading.
- 2A MAP of 70-100 mmHg is generally considered adequate to perfuse vital organs in healthy adults.
- 3This is an informational calculation only — interpret results with a clinician, especially in critical care contexts.
Inputs explained
- Systolic BP(mmHg)
- Enter the systolic bp in mmHg.
- Diastolic BP(mmHg)
- Enter the diastolic bp in mmHg.
Worked example
Using the values the calculator loads with:
Inputs
- Systolic BP120 mmHg
- Diastolic BP80 mmHg
Results
- Mean arterial pressure93.3 mmHg
- InterpretationNormal range
Frequently asked questions
Why isn't MAP just the average of SBP and DBP?
Diastole lasts about twice as long as systole in a cardiac cycle, so it's weighted more heavily.
When is MAP used clinically?
It's commonly monitored in critical care and anesthesia to assess organ perfusion.
What do I need to enter into the Mean Arterial Pressure Calculator?
Just 2 values: systolic bp, diastolic bp. 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 Mean Arterial Pressure Calculator work out the answer?
Mean arterial pressure represents the average pressure in the arteries during one cardiac cycle. It applies the formula MAP = DBP + 1/3 (SBP - DBP) and shows the working so you can check each step by hand.
Is the Mean Arterial 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.