MAP Calculator
Enter systolic and diastolic blood pressure to instantly calculate Mean Arterial Pressure (MAP) with a clinical range interpretation.
Use the MAP Calculator
Blood Pressure Inputs
mmHg
The top (higher) number in a blood pressure reading.
mmHg
The bottom (lower) number in a blood pressure reading.
Formula
MAP = DBP + (SBP − DBP) / 3
Weighted average reflecting the longer diastolic phase.
Mean Arterial Pressure
--
mmHg
Low
Normal
High
40
70
100
111
150
Clinical Interpretation
Enter values to see interpretation
Provide systolic and diastolic pressure, then click Calculate MAP.
Step-by-Step Breakdown
MAP Clinical Reference Ranges
| Range (mmHg) | Classification | Clinical Significance |
|---|---|---|
| < 60 | Critically Low | Inadequate organ perfusion; emergency evaluation required. |
| 60 – 69 | Low / Borderline | Marginal perfusion; may cause dizziness or lightheadedness. |
| 70 – 100 | Normal | Adequate perfusion pressure for most healthy adults. |
| 101 – 110 | Elevated | Pre-hypertension range; lifestyle review is recommended. |
| > 110 | High | Hypertension; consult a healthcare provider for management. |
For informational purposes only — not a substitute for professional medical advice.
Summary
Enter systolic and diastolic blood pressure to instantly calculate Mean Arterial Pressure (MAP) with a clinical range interpretation.
How it works
- Enter your systolic blood pressure (SBP) — the top number from a blood pressure reading — in mmHg.
- Enter your diastolic blood pressure (DBP) — the bottom number — in mmHg.
- The calculator applies the standard clinical formula: MAP = DBP + (SBP − DBP) / 3.
- The result appears instantly alongside a visual range bar showing where your MAP falls.
- Read the color-coded clinical interpretation to understand what the value means for organ perfusion.
- Review the step-by-step calculation breakdown to verify the math.
Use cases
- Estimate MAP from a routine blood pressure measurement.
- Check whether MAP meets the minimum perfusion threshold of 60–65 mmHg.
- Monitor hypertension management and track improvement over time.
- Support nursing exam preparation and medical school study.
- Assist critical care and emergency clinicians in rapid bedside calculations.
- Educate patients on how blood pressure affects organ blood flow.
- Verify MAP calculations done manually during clinical procedures.
- Research and academic use where a fast, reliable MAP formula tool is needed.
Frequently Asked Questions
Last updated: 2026-09-22 ·
Reviewed by Nham Vu