1. What is Pressure Conversion from Pa to mmHg?

Definition: This calculator converts pressure measurements from Pascals (Pa) to millimeters of mercury (mmHg).

Purpose: It's commonly used in scientific, medical, and engineering fields where pressure measurements need to be converted between these units.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{mmHg} \) — Pressure in millimeters of mercury
• \( P_{Pa} \) — Pressure in Pascals

Explanation: The conversion factor 133.322 comes from the definition that 1 mmHg equals 133.322 Pascals at standard conditions.

3. Importance of Pressure Conversion

Details: Accurate pressure conversion is crucial in fields like medicine (blood pressure), meteorology, and various engineering applications where different units are standard.

4. Using the Calculator

Tips: Simply enter the pressure value in Pascals and the calculator will automatically compute the equivalent in mmHg.

5. Frequently Asked Questions (FAQ)

Q1: Why is mmHg still used today?
A: mmHg remains standard in medicine (especially for blood pressure) and some scientific fields due to historical convention and practical measurement methods.

Q2: What's the exact conversion factor?
A: The precise conversion is 1 mmHg = 133.32236842105263 Pa, but 133.322 is typically sufficient for most applications.

Q3: How accurate is this conversion?
A: The conversion is mathematically exact under standard conditions (0°C at sea level).

Q4: Can I convert mmHg back to Pa?
A: Yes, simply multiply mmHg by 133.322 to get Pascals.

Q5: Where is mmHg commonly used?
A: Primarily in medicine (blood pressure), barometry, and some chemistry applications.