Rex says
Same equations the textbooks use — just way less awkward. Pop in your stats and I'll tell you what the number actually means for you.
Try a scenario
Click to load — tweak from there.Inputs
Result
Mean arterial pressure
93.3
Pulse pressure
40
Pulse pressure index
0.333
Perfusion pressure (MAP − ICP/CVP)
83.3
Psst — share this and help Rex grow
One click, a permanent link with your numbers baked in.
How to use this
- 1Enter systolic (mmHg).
- 2Enter diastolic (mmHg).
- 3Enter icp or cvp (optional) (mmHg).
- 4Read your mean arterial pressure on the right — it updates as you type.
- 5Hit Share to keep the scenario or send it to someone.
About this calculator
Mean arterial pressure is the number that actually reflects organ perfusion. Enter systolic and diastolic values to get MAP, pulse pressure, and the pulse pressure index.
Worked example
Using the values the calculator loads with:
Inputs
- Systolic: 120 mmHg
- Diastolic: 80 mmHg
- ICP or CVP (optional): 10 mmHg
Results
- Mean arterial pressure: 93.3
- Pulse pressure: 40
- Pulse pressure index: 0.333
- Perfusion pressure (MAP − ICP/CVP): 83.3
What each field means
Inputs
- Systolic (mmHg)
- The systolic used in the calculation, measured in mmHg. Starts at 120 mmHg so you have a working example on load.
- Diastolic (mmHg)
- The diastolic used in the calculation, measured in mmHg. Starts at 80 mmHg so you have a working example on load.
- ICP or CVP (optional) (mmHg)
- The icp or cvp (optional) used in the calculation, measured in mmHg. Starts at 10 mmHg so you have a working example on load.
Results
- Mean arterial pressure
- Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Pulse pressure
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Pulse pressure index
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Perfusion pressure (MAP − ICP/CVP)
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
What MAP is adequate?
65 mmHg is the common resuscitation floor for organ perfusion in adults, though individual targets vary widely.
Why is MAP weighted toward diastolic?
The heart spends roughly two-thirds of the cardiac cycle in diastole, so diastolic pressure dominates the time-weighted average.
Accuracy and limitations
- Population formulas describe averages; individual bodies vary, especially at the extremes of height, age, or muscle mass.
- Results do not account for medical conditions, medication, or pregnancy.
- Use this as a directional reference, not a diagnosis — talk to a clinician before acting on it.
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Mean Arterial Pressure Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/map-blood-pressure
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/map-blood-pressure" target="_blank" rel="noopener">Mean Arterial Pressure Calculator — RevenueLab</a> (2026).</p>
Source: [Mean Arterial Pressure Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/map-blood-pressure) (2026).