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Calculate MAP = DBP + (SBP − DBP)/3. Normal 70–100; ≥65 sepsis target; <65 hypoperfusion. Derived from Geddes 1984, SSC 2021, BTF 2017, StatPearls, LITFL. Not medical advice.
Execution
Fill in the form, run the tool, and review the result in one place.
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Tool usage guide
Calculate mean arterial pressure (MAP) from systolic blood pressure (SBP) and diastolic blood pressure (DBP). The tool returns MAP in mmHg, pulse pressure, the formula used, and a reference category; it is not medical advice.
Background
A healthcare student wants to verify the MAP calculation for a blood pressure reading of 120/80 mmHg.
Problem
Calculate MAP and compare it with the stated normal adult range.
How to use
Enter 120 for SBP, 80 for DBP, and select 1 decimal place.
SBP: 120 mmHg; DBP: 80 mmHg; Decimal places: 1Outcome
The calculator returns MAP = 93.3 mmHg, pulse pressure = 40 mmHg, and the category Normal MAP (70–100 mmHg).
Background
A critical-care trainee is reviewing a 90/50 mmHg reading and wants to compare its MAP with the 65 mmHg sepsis or shock target.
Problem
Identify whether the calculated MAP is below the stated target.
How to use
Enter 90 for SBP, 50 for DBP, and select 1 decimal place.
SBP: 90 mmHg; DBP: 50 mmHg; Decimal places: 1MAP = DBP + (SBP − DBP)/3, which is also written as (SBP + 2 × DBP)/3.
It requires systolic blood pressure and diastolic blood pressure, both entered in mmHg.
The JSON result includes MAP, pulse pressure, the formula, a reference category, and the input values.
The tool identifies 70–100 mmHg as the normal adult MAP range.
A MAP below 65 mmHg is identified as low and below the sepsis or shock target; seek guidance from a qualified clinician.
Outcome
The calculator returns MAP = 63.3 mmHg, pulse pressure = 40 mmHg, and the category Low MAP (< 65 mmHg) — below sepsis/shock target.