MAP Calculator (Mean Arterial Pressure)
Calculate mean arterial pressure from systolic and diastolic readings. MAP is a critical hemodynamic parameter for assessing organ perfusion.
This free online map calculator (mean arterial pressure) provides instant results with no signup required. All calculations run directly in your browser — your data is never sent to a server. Enter your values below and see results update in real time as you type. Perfect for everyday calculations, homework, or professional use.
Results
Mean Arterial Pressure
93.3 mmHg
How to Use This Calculator
Enter your input values
Fill in all required input fields for the MAP Calculator (Mean Arterial Pressure). Most fields include unit selectors so you can work in your preferred unit system — metric or imperial, whichever matches your problem.
Review your inputs
Double-check that all values are correct and that you have selected the right units for each field. Incorrect units are the most common source of calculation errors and can produce results that are off by factors of 2, 10, or more.
Read the results
The MAP Calculator (Mean Arterial Pressure) instantly computes the output and displays results with units clearly labeled. All calculations happen in your browser — no loading time and no data sent to a server.
Explore parameter sensitivity
Try adjusting individual input values to see how the output changes. This is a quick and effective way to develop intuition about how different parameters influence the result and to identify which inputs have the largest effect.
When to Use This Calculator
- •Use the MAP Calculator (Mean Arterial Pressure) for personal health tracking and wellness monitoring, establishing a baseline and tracking changes over time.
- •Use it when recording fitness metrics to track progress toward health or athletic goals.
- •Use it to compare measurements before and after a lifestyle, diet, or training change to quantify the impact.
- •Use it as a conversation starter before a doctor's appointment, bringing objective data to discuss with a healthcare professional.
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About MAP Calculator (Mean Arterial Pressure)
The MAP Calculator computes mean arterial pressure, a weighted average of systolic and diastolic blood pressure that represents the average pressure in the arteries during one cardiac cycle. MAP is more clinically useful than SBP or DBP alone because it determines the rate of blood flow through organs. A MAP of at least 60 mmHg is necessary to perfuse the brain, heart, and kidneys. In critical care, MAP is continuously monitored and used to guide vasopressor therapy.
The Math Behind It
Formula Reference
MAP
MAP = DBP + (SBP - DBP) / 3
Variables: SBP, DBP in mmHg
Worked Examples
Example 1: Normal BP
120/80 mmHg
MAP 93.3 mmHg — normal range.
Example 2: Hypotensive
85/55 mmHg (trauma)
MAP 65.0 mmHg — borderline low, requires intervention.
Common Mistakes & Tips
- !Using simple average (SBP+DBP)/2 instead of weighted formula.
- !Applying to very high heart rates (>120 bpm) where the 1/3 weighting is inaccurate.
Related Concepts
Used in These Calculators
Calculators that build on or apply the concepts from this page:
Frequently Asked Questions
What is normal MAP?
70-100 mmHg. Below 60 is inadequate perfusion; above 100 suggests hypertension.
Why weight diastolic more?
Diastole occupies about 2/3 of the cardiac cycle, so the average pressure is closer to diastolic than systolic.
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