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Mean Arterial Pressure Calculator

Calculate MAP from systolic and diastolic blood pressure using both the standard clinical formula and the exact formula. Includes pulse pressure, BP classification, and clinical interpretation.

Both MAP formulas · AHA BP classification · Organ perfusion ranges · Clinical context

Blood Pressure Reading

Enter systolic (top number) and diastolic (bottom number)

mmHg

The higher number — pressure when heart beats

mmHg

The lower number — pressure when heart rests

Formula Method

MAP = DBP + ⅓(SBP − DBP) — assumes diastole is ⅔ of the cardiac cycle. Standard clinical formula.

Clinical Context (optional)
yrs

Medical Disclaimer

This calculator is intended for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for interpretation of blood pressure readings and clinical decisions.

Live Result
—
MAP (mmHg)
Systolic120 mmHg
Diastolic80 mmHg
Pulse Pressure40 mmHg
MAP Status—
MAP Clinical Ranges
< 60 mmHgCritical — Shock
60–69 mmHgLow — Hypotension
70–100 mmHgNormal Range
65 mmHgSepsis target min
100–110 mmHgElevated
> 110 mmHgHypertensive
> 130 mmHgCrisis
AHA Blood Pressure Categories
Normal
<120 / <80
Ideal
Elevated
120–129 / <80
Monitor
Stage 1 HTN
130–139 / 80–89
Lifestyle Δ
Stage 2 HTN
≥140 / ≥90
Medication
HTN Crisis
>180 / >120
ER Now
Hypotension
<90 / <60
Evaluate
MAP Formula Reference
Standard (Clinical)
MAP = DBP + ⅓(SBP − DBP)
Assumes 1/3 systole, 2/3 diastole. Used at bedside.
Simplified Equivalent
(SBP + 2×DBP) ÷ 3
Mathematically identical to standard formula.
Exact (with HR)
MAP = DBP×(Td/T) + SBP×(Ts/T)
Ts = systole duration, Td = diastole. More precise but HR required.