MAP Calculator (Mean Arterial Pressure)
Perfusion pressure from BP — the number ICU targets are written in, with the 65 mmHg line explained.
Diastole lasts twice as long as systole at resting rates — hence the one-third weighting. MAP, not systolic, drives organ perfusion, and ≥65 mmHg is the evidence-anchored sepsis resuscitation floor (SEPSISPAM found no benefit targeting higher except in chronic hypertensives). At fast heart rates the 1/3 approximation degrades; monitors integrate the waveform instead.
Formula
Reference aid for healthcare professionals only. Every result must be independently verified before clinical use. Never use this tool for self-medication or to replace clinical judgement.
Perfusion pressure from BP — the number ICU targets are written in, with the 65 mmHg line explained. The MAP Calculator (Mean Arterial Pressure) is a free, private map calculator tool — every result computes instantly in your browser with no sign-up and no data upload.
About MAP Calculator (Mean Arterial Pressure)
Diastole lasts twice as long as systole at resting rates — hence the one-third weighting. It applies MAP ≈ DBP + (SBP − DBP)/3. Use the MAP Calculator (Mean Arterial Pressure) to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use MAP Calculator (Mean Arterial Pressure)
- 1Enter your details in the MAP Calculator (Mean Arterial Pressure) input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use MAP Calculator (Mean Arterial Pressure)?
- ✓Instant map calculator result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (Surviving Sepsis Campaign 2021)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the MAP Calculator (Mean Arterial Pressure) work?+
Diastole lasts twice as long as systole at resting rates — hence the one-third weighting. The calculation uses the formula: MAP ≈ DBP + (SBP − DBP)/3. Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the MAP Calculator (Mean Arterial Pressure) accurate, and what is it based on?+
The method is traceable to authoritative sources, including Surviving Sepsis Campaign 2021; Asfar P et al., NEJM 2014 — SEPSISPAM. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the MAP Calculator (Mean Arterial Pressure) free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This is a reference aid for healthcare professionals and must be independently verified. It is not for self-diagnosis or self-medication.
What can I use the MAP Calculator (Mean Arterial Pressure) for?+
It's commonly used for map calculator, mean arterial pressure, map 65. Perfusion pressure from BP — the number ICU targets are written in, with the 65 mmHg line explained.
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