1. What is an atm to psi Calculator?

Definition: This calculator converts atmospheric pressure (atm) to pounds per square inch (psi).

Purpose: It helps engineers, scientists, and technicians convert between these common pressure units.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{psi} \) — Pressure in pounds per square inch
• \( P_{atm} \) — Pressure in atmospheres
• 14.6959 — Conversion factor (1 atm = 14.6959 psi)

Explanation: The atmospheric pressure value is multiplied by the standard conversion factor to get the equivalent pressure in psi.

3. Importance of Pressure Conversion

Details: Accurate pressure conversion is crucial in fields like engineering, meteorology, and industrial processes where different units are used.

4. Using the Calculator

Tips: Enter the pressure value in atmospheres (default is 1 atm). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 14.6959?
A: This is the exact conversion factor based on the standard atmosphere definition (1 atm = 101325 Pa) and the psi definition (1 psi = 6894.76 Pa).

Q2: What's the difference between atm and psi?
A: Both are pressure units, but atm is based on Earth's atmospheric pressure at sea level, while psi is based on pounds of force per square inch.

Q3: When would I need to convert atm to psi?
A: Common when working with American equipment specifications (often in psi) while using scientific data (often in atm).

Q4: Is 1 atm exactly equal to 14.6959 psi?
A: Yes, this is the standard conversion factor defined by international agreement.

Q5: Can I convert psi back to atm?
A: Yes, by dividing psi by 14.6959 (or use our psi to atm calculator).