# Pulse Pressure Calculator (PP = SBP − DBP) Calculate PP = SBP − DBP and MAP = DBP + PP/3. Normal ~30–40 mmHg; wide PP → high SV or stiff arteries; narrow PP → low SV. Pulsus paradoxus flags tamponade/asthma/PE. Derived from McDonald's, Franklin 1999, Blacher 1999, StatPearls, LITFL. Not medical advice. > Canonical page: https://elysiatools.com/en/tools/pulse-pressure-calculator - **Category:** Health - **Keywords:** pulse pressure, blood pressure, systolic, diastolic, stroke volume, aortic compliance, wide pulse pressure, narrow pulse pressure, aortic regurgitation, tamponade, cardiology, critical care ## Overview The Pulse Pressure Calculator uses systolic blood pressure (SBP) and diastolic blood pressure (DBP) in mmHg to calculate pulse pressure, mean arterial pressure (MAP), the pulse-pressure fraction of SBP, and a pulse-pressure category. It is for reference only and is not medical advice. ## Inputs - **Systolic BP (mmHg)** (number): Systolic blood pressure (mmHg). - **Diastolic BP (mmHg)** (number): Diastolic blood pressure (mmHg). - **Decimal Places** (number) ## When to use - Calculate pulse pressure from a blood pressure reading. - Estimate MAP using DBP + pulse pressure/3. - Review whether a calculated pulse pressure is categorized as normal or widened. ## How it works - Enter systolic blood pressure in mmHg. - Enter diastolic blood pressure in mmHg. - Choose the number of decimal places, from 0 to 8, if needed. - The tool returns pulse pressure, MAP, pulse pressure as a fraction of SBP, and a category in JSON. ## Use cases - Reviewing pulse pressure alongside a recorded blood pressure reading. - Calculating MAP for educational cardiology or critical-care exercises. - Comparing normal and widened pulse-pressure examples using consistent formulas. ## Frequently asked questions ### What is the pulse pressure formula? Pulse pressure is calculated as SBP − DBP. ### What does the calculator return? It returns pulse pressure, MAP, the fraction of SBP, and a pulse-pressure category. ### What units should I enter? Enter both systolic and diastolic blood pressure in mmHg. ### Can I control the displayed precision? Yes. Set Decimal Places from 0 to 8; the default is 1. ### Is this calculator medical advice? No. The results are for reference and do not replace professional medical evaluation. ## Related tools - [Correlation Analyzer](https://elysiatools.com/en/tools/correlation-analyzer): Advanced correlation analysis tool that calculates correlation coefficients between variables to measure the strength and direction of their linear relationships. Perfect for statistical analysis, financial modeling, scientific research, and data exploration. 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