What this calculator does
Mean arterial pressure (MAP) works out average pressure driving blood flow through the body over one heartbeat cycle. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaMAP = DBP + (SBP − DBP) / 3
The inputs explained
| Field | What to enter |
|---|---|
| Systolic blood pressure (mmHg) | A number, measured in mmHg. Starts at 120. |
| Diastolic blood pressure (mmHg) | A number, measured in mmHg. Starts at 80. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with systolic blood pressure
Every other input is held at the calculator’s starting values while systolic blood pressure varies. Select any row to load that scenario into the calculator.