Mean Arterial Pressure Calculator

MAP is the average pressure driving blood to your organs across a full heartbeat — the number ICU teams watch closely.

Systolic (mmHg)

Peak pressure during a heartbeat.

Diastolic (mmHg)

Resting pressure between beats.

The formula
MAP = (SBP + 2 × DBP) ÷ 3
Target: 70–100 mmHg for good organ perfusion. In critical care, MAP ≥ 65 is the classic minimum.

The heart spends two-thirds of each cycle in diastole — which is why the diastolic number is weighted double.

💔 Perfusion view

What MAP means for kidney & brain flow.

🏁 ICU threshold

The famous 65 mmHg floor, explained.

📈 Visual gauge

See your MAP on the danger scale.

🧾 Educational

A number to discuss, not to diagnose.