Pascals (Pa) to PSI Converter

Convert pascals to psi using standard pressure conversion constants.

How to Convert Pascals to PSI

The conversion between Pascals (Pa), the SI unit of pressure, and Pounds per Square Inch (PSI), the Imperial unit, is a common task in engineering and science. The most important conversion factor to remember is:

Formulas Used

• Pascals to PSI: PSI = Pa / 6894.757
• PSI to Pascals: Pa = PSI × 6894.757

Because the Pascal is a very small unit, it is much more common to convert from **Kilopascals (kPa)** or **Megapascals (MPa)**.

• Kilopascals (kPa) to PSI: PSI = kPa × 0.145038
• Megapascals (MPa) to PSI: PSI = MPa × 145.038

Understanding the Units

• Pascal (Pa): The SI unit of pressure, defined as one newton per square meter (N/m²). It's a very small unit, so Kilopascals (1 kPa = 1,000 Pa) are more common for everyday measurements (like weather), and Megapascals (1 MPa = 1,000,000 Pa) are used for high-pressure systems.
• PSI (Pounds per Square Inch): The standard pressure unit in the United States. It measures the force in pounds-force applied to an area of one square inch. It's commonly used for tire pressure, gas tanks, and hydraulic systems.

Common Pressure Reference Points

Frequently Asked Questions (FAQ)

What is the formula for Pascals (Pa) to PSI?

The formula is: PSI = Pa / 6894.757. A more common conversion is from kilopascals: PSI = kPa * 0.145038.

How many Pascals are in 1 PSI?

There are **6,894.757 Pascals** in 1 Pound per Square Inch (PSI). Or, more simply, 6.895 kPa.

Is kPa the same as Pa?

No. The "k" stands for "kilo," which means one thousand. 1 kPa = 1,000 Pa. Similarly, "M" stands for "mega" (one million), so 1 MPa = 1,000,000 Pa.

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1 PSI = 6,894.757 Pascals (Pa)