1. What is a mmHg to psi Calculator?

Definition: This calculator converts pressure measurements from millimeters of mercury (mmHg) to pounds per square inch (psi).

Purpose: It helps engineers, scientists, and technicians work with pressure measurements across different unit systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{psi} \) — Pressure in pounds per square inch (psi)
• \( P_{mmHg} \) — Pressure in millimeters of mercury (mmHg)

Explanation: The conversion factor 51.715 comes from the exact definition that 1 psi = 51.714932572 mmHg.

3. Importance of Pressure Unit Conversion

Details: Accurate pressure conversions are critical in fields like engineering, medicine (blood pressure), meteorology, and industrial processes.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 51.715?
A: This comes from the exact conversion between the two units, based on standard atmospheric pressure definitions.

Q2: How precise is this conversion?
A: The calculator uses a 6-decimal precision, sufficient for most practical applications.

Q3: When would I need to convert mmHg to psi?
A: Common in medical equipment calibration, industrial pressure systems, and when working with international standards.

Q4: Is mmHg the same as Torr?
A: For most practical purposes, yes (1 mmHg ≈ 1 Torr), though there's a slight technical difference in their definitions.

Q5: What's the psi equivalent of standard atmospheric pressure?
A: Standard atmospheric pressure is 760 mmHg, which equals about 14.6959 psi.