# Mean Arterial Pressure (MAP) 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. > Canonical page: https://elysiatools.com/en/tools/mean-arterial-pressure - **Category:** Health - **Keywords:** mean arterial pressure, map, blood pressure, systolic, diastolic, perfusion, sepsis, shock, cerebral perfusion, critical care, cardiology ## Overview 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. ## Inputs - **Systolic BP (mmHg)** (number): Systolic blood pressure (mmHg). - **Diastolic BP (mmHg)** (number): Diastolic blood pressure (mmHg). - **Decimal Places** (number) ## When to use - Estimate average arterial pressure from a blood pressure reading. - Check whether a calculated MAP is within the stated normal range of 70–100 mmHg. - Review whether a MAP is below the 65 mmHg sepsis or shock target. ## How it works - Enter systolic blood pressure in mmHg. - Enter diastolic blood pressure in mmHg. - Choose the number of decimal places for the result, from 0 to 8. - The calculator returns MAP using DBP + (SBP − DBP)/3, along with pulse pressure and a category. ## Use cases - Review blood pressure readings in clinical education and critical-care calculations. - Compare a calculated MAP with the 70–100 mmHg reference range. - Assess a sample reading against the 65 mmHg sepsis or shock target. ## Frequently asked questions ### What is the MAP formula? MAP = DBP + (SBP − DBP)/3, which is also written as (SBP + 2 × DBP)/3. ### What inputs does the calculator require? It requires systolic blood pressure and diastolic blood pressure, both entered in mmHg. ### What does the calculator return? The JSON result includes MAP, pulse pressure, the formula, a reference category, and the input values. ### What is a normal adult MAP range? The tool identifies 70–100 mmHg as the normal adult MAP range. ### Does a MAP below 65 mmHg require medical attention? A MAP below 65 mmHg is identified as low and below the sepsis or shock target; seek guidance from a qualified clinician. ## Related tools - [Free Water Clearance Calculator](https://elysiatools.com/en/tools/free-water-clearance): Calculate solute-free water clearance (C_H₂O) and electrolyte-free water clearance (eC_H₂O) to differentiate hypo-/hypernatremia. 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