Mean Arterial Pressure Calculator

Form

Results

Your MAP

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Table of Contents

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What is Mean Arterial Pressure?

Estimate mean arterial pressure from systolic and diastolic readings.

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How to Use This Calculator

  1. Enter or select Systolic BP, Diastolic BP.
  2. Check the unit beside each measurement. For a percentage or rate, use the scale and time period stated in the form.
  3. Choose Calculate, then compare the output with the formula and example below. If you change a value or option, calculate again to update the result.
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Formula Used

MAP ≈ (systolic+2 × diastolic)/3
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Variables Explained

InputWhat it means
Systolic BPThe upper blood-pressure reading, normally stated in mmHg.
Diastolic BPThe lower blood-pressure reading, normally stated in mmHg.
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Worked Example

A reading of 120/80 mmHg gives an estimated MAP of about 93.33 mmHg.

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Why Use This Calculator?

Use the calculation to make the method and its inputs easier to check with a healthcare professional. Its meaning depends on the clinical setting and on whether the underlying method is appropriate for that person.

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Common Mistakes

    • This approximation is affected by heart rate and waveform; one reading does not establish a blood-pressure diagnosis.
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Frequently Asked Questions

Is this result a diagnosis or treatment instruction?

No. It describes a calculation or score from the supplied information. A qualified clinician must check the measurements, the method’s applicability and the wider clinical picture.

Can I enter the units from any lab report?

Use the units specified in the form and select a conversion only where the page provides one. Different substances need different conversion factors; a mismatch can produce a plausible but incorrect result.

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Sources & References

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