How to Calculate Mean Arterial Pressure

What is Mean Arterial Pressure?

Mean Arterial Pressure (MAP) is the average blood pressure during one cardiac cycle, representing the true perfusion pressure to vital organs. MAP = (SBP + 2×DBP) / 3.

Formula

MAP = (SBP + 2×DBP) / 3

MAP: DBP + (pulse pressure / 3) — DBP + (pulse pressure / 3)
SBP: SBP value — Variable used in the calculation
DBP: DBP value — Variable used in the calculation

Step-by-Step Guide

1MAP = (SBP + 2×DBP) / 3
2Alternatively: MAP = DBP + (pulse pressure / 3)
3Normal MAP: 70–100 mmHg
4MAP < 65 mmHg: organ perfusion compromised

Worked Examples

Input

Blood pressure 120/80 mmHg

Result

MAP = (120 + 160) / 3 = 93.3 mmHg (Normal)

Frequently Asked Questions

What is Map?

Mean Arterial Pressure (MAP) is the average blood pressure during one cardiac cycle, representing the true perfusion pressure to vital organs. MAP = (SBP + 2×DBP) / 3

How accurate is the Map calculator?

The calculator uses the standard published formula for map. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Map calculator use?

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Map calculator use?

The core formula is: MAP = (SBP + 2×DBP) / 3. Each step in the calculation is shown so you can verify the result manually.

Ready to calculate? Try the free Mean Arterial Pressure Calculator

Try it yourself →