Mean Arterial Pressure
The heart spends only a third of each cycle contracting, so MAP is diastolic plus one third of the pulse pressure rather than a plain average. It reflects perfusion of the organs.
Your numbers
Mean arterial pressure
93.3mmHg
Pulse pressure
40mmHg
What it means
A MAP of 93.3 mmHg sits in the usual 70–100 range.
Formula
Mean arterial pressure = Diastolic + (Systolic − Diastolic) ÷ 3
Never judge from a single reading — measure at the same time of day over several days and average.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Systolic (mmHg)The higher reading, when the heart squeezes. | 120 | 50 ~ 260 |
| Diastolic (mmHg)The lower reading, when the heart relaxes. | 80 | 30 ~ 160 |
Step by step
Quick reference table
Results when only Systolic (mmHg) changes and everything else stays put.
| Systolic (mmHg) | Mean arterial pressure (mmHg) | Pulse pressure (mmHg) |
|---|---|---|
| 60 | 73.3 | -20 |
| 90 | 83.3 | 10 |
| 120 | 93.3 | 40 |
| 180 | 113.3 | 100 |
| 240 | 133.3 | 160 |
What each result means
| Result | At default values |
|---|---|
| Mean arterial pressure (mmHg)Average pressure over one heartbeat — what the organs actually feel. | 93.3 |
| Pulse pressure (mmHg)Systolic minus diastolic — a hint at how stiff the arteries are. | 40 |
Common mistakes
Never judge from a single reading — measure at the same time of day over several days and average.
Glossary
- Systolic
- The higher reading, when the heart squeezes.
- Diastolic
- The lower reading, when the heart relaxes.
- Mean arterial pressure
- Average pressure over one heartbeat — what the organs actually feel.
- Pulse pressure
- Systolic minus diastolic — a hint at how stiff the arteries are.
Frequently asked questions
Q. How is Mean Arterial Pressure calculated?
Mean arterial pressure = Diastolic + (Systolic − Diastolic) ÷ 3 — The heart spends only a third of each cycle contracting, so MAP is diastolic plus one third of the pulse pressure rather than a plain average. It reflects perfusion of the organs.
Q. Can you walk through an example?
With Systolic 120mmHg, Diastolic 80mmHg, the answer is Mean arterial pressure 93.3mmHg.
Q. What do I need to enter?
Enter Systolic, Diastolic. The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Systolic (mmHg) moves the answer to Systolic (mmHg) 60 → Mean arterial pressure (mmHg) 73.3 and Systolic (mmHg) 240 → Mean arterial pressure (mmHg) 133.3. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
Never judge from a single reading — measure at the same time of day over several days and average.
Related calculators
These calculators help you understand health figures; they do not replace diagnosis or prescription. See a clinician if you have symptoms.