Convert Pascals to Pounds per Square Inch
Instantly convert Pascals (Pa) to Pounds per Square Inch (psi) with our free online calculator.
Formula: Pa to psi — multiply by 1.4504e-4
Reference Table
| Pascals (Pa) | Pounds per Square Inch (psi) |
|---|---|
| 1 | 0.000145038 |
| 5 | 0.000725189 |
| 10 | 0.00145038 |
| 25 | 0.00362594 |
| 50 | 0.00725189 |
| 100 | 0.0145038 |
How to Convert Pascals to Pounds per Square Inch
Formula
To convert Pascals (Pa) to Pounds per Square Inch (psi): multiply by 1.4504e-4
Step-by-Step
- Start with your value in Pascals (Pa).
- Multiply by 1.4504e-4 to perform the conversion.
- The result is your value expressed in Pounds per Square Inch (psi).
Conversion Factor
1 Pa = 0.000145038 psi
Reverse Factor
1 psi = 6894.76 Pa
Worked Example
Convert 25 Pascals to Pounds per Square Inch: 25 Pa = 0.00362594 psi
About Pascal (Pa)
The SI derived unit of pressure (and stress), formally defined as one newton per square meter (N/m²) by ISO 80000-4. Named for 17th-century French mathematician Blaise Pascal, whose 1647-48 Puy-de-Dôme experiment established that atmospheric pressure decreases with altitude. The pascal is a small unit — standard sea-level atmospheric pressure is exactly 101,325 Pa per the BIPM SI Brochure — so working engineering and meteorology use multiples: kilopascals (kPa) for everyday gauge pressures, megapascals (MPa) for material strength, hectopascals (hPa) for barometric readings (1 kPa = 10 hPa). The pascal is the universal SI reference for pressure across scientific publication (Physical Review, J. Fluid Mechanics), thermodynamic state tables (NIST REFPROP), and international engineering codes (ASME, EN, JIS). Converting Pa to psi is a divide-by-6894.76; Pa to bar is divide-by-100,000.
About Pound per Square Inch (psi)
An imperial unit of pressure equal to one pound-force applied over one square inch (exactly 6,894.757 Pa per NIST SP 811). PSI is the dominant US pressure unit and remains the working unit in most US-built industrial, automotive, and consumer equipment: passenger-car tire inflation (32-35 psi cold), compressed air shop systems (typically 100-150 psi), hydraulic equipment (1,500-3,000 psi mobile, up to 10,000 psi on press brakes), ammunition chamber pressures (SAAMI specs in psi), municipal potable water supply (~40-80 psi at the meter), and natural gas distribution pressures. US engineering textbooks and the ASME B31 pipe codes, API piping specifications, and AWWA waterworks standards quote allowable pressures in psi. Engineers should distinguish gauge psi (psig — pressure above atmospheric) from absolute psi (psia — pressure above perfect vacuum); 0 psig = 14.696 psia at sea level. 1 psi = 6.895 kPa = 0.0689 bar = 51.715 mmHg.
Quick Facts
- 1 Pascal equals 0.000145038 Pounds per Square Inch
- 1 Pound per Square Inch equals 6894.76 Pascals
- Pascal is a unit of pressure
- Pound per Square Inch is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Pascal belongs to the metric system
- The Pound per Square Inch belongs to the imperial system
Common Pascal to Pound per Square Inch Conversions
| Pascals (Pa) | Pounds per Square Inch (psi) |
|---|---|
| 0.1 | 0.0000145038 |
| 0.5 | 0.0000725189 |
| 1 | 0.000145038 |
| 2 | 0.000290075 |
| 5 | 0.000725189 |
| 10 | 0.00145038 |
| 14.696 | 0.00213147 |
| 15 | 0.00217557 |
| 20 | 0.00290075 |
| 25 | 0.00362594 |
| 50 | 0.00725189 |
| 100 | 0.0145038 |
| 150 | 0.0217557 |
| 200 | 0.0290075 |
| 500 | 0.0725189 |
| 1000 | 0.145038 |
Understanding Pascals
The Pascal (symbol: Pa) is a unit of pressure. The SI derived unit of pressure (and stress), formally defined as one newton per square meter (N/m²) by ISO 80000-4. Named for 17th-century French mathematician Blaise Pascal, whose 1647-48 Puy-de-Dôme experiment established that atmospheric pressure decreases with altitude. The pascal is a small unit — standard sea-level atmospheric pressure is exactly 101,325 Pa per the BIPM SI Brochure — so working engineering and meteorology use multiples: kilopascals (kPa) for everyday gauge pressures, megapascals (MPa) for material strength, hectopascals (hPa) for barometric readings (1 kPa = 10 hPa). The pascal is the universal SI reference for pressure across scientific publication (Physical Review, J. Fluid Mechanics), thermodynamic state tables (NIST REFPROP), and international engineering codes (ASME, EN, JIS). Converting Pa to psi is a divide-by-6894.76; Pa to bar is divide-by-100,000.
It belongs to the metric measurement system.
Pascals are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Understanding Pounds per Square Inch
The Pound per Square Inch (symbol: psi) is a unit of pressure. An imperial unit of pressure equal to one pound-force applied over one square inch (exactly 6,894.757 Pa per NIST SP 811). PSI is the dominant US pressure unit and remains the working unit in most US-built industrial, automotive, and consumer equipment: passenger-car tire inflation (32-35 psi cold), compressed air shop systems (typically 100-150 psi), hydraulic equipment (1,500-3,000 psi mobile, up to 10,000 psi on press brakes), ammunition chamber pressures (SAAMI specs in psi), municipal potable water supply (~40-80 psi at the meter), and natural gas distribution pressures. US engineering textbooks and the ASME B31 pipe codes, API piping specifications, and AWWA waterworks standards quote allowable pressures in psi. Engineers should distinguish gauge psi (psig — pressure above atmospheric) from absolute psi (psia — pressure above perfect vacuum); 0 psig = 14.696 psia at sea level. 1 psi = 6.895 kPa = 0.0689 bar = 51.715 mmHg.
It belongs to the imperial measurement system.
Pounds per Square Inch are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Pascals to Pounds per Square Inch?
Engineers, mechanics, and scientists frequently need to convert pressure between Pascals and Pounds per Square Inch when working with different measurement standards. Tire pressure, blood pressure readings, weather barometric measurements, and industrial process specifications may all use different pressure units depending on the region or discipline. Reliable conversion prevents equipment misuse and ensures safety.
Frequently Asked Questions
How do I convert Pascals to Pounds per Square Inch?
The SI derived unit of pressure (and stress), formally defined as one newton per square meter (N/m²) by ISO 80000-4. To convert Pascals to Pounds per Square Inch, multiply by 1.4504e-4. For example, 25 Pa equals 0.00362594 psi.
How many Pounds per Square Inch are in 1 Pascal?
There are 0.000145038 Pounds per Square Inch in 1 Pascal.
How many Pascals are in 1 Pound per Square Inch?
There are 6894.76 Pascals in 1 Pound per Square Inch.
What is the formula for Pascal to Pound per Square Inch conversion?
The formula is: multiply by 1.4504e-4. This means 1 Pa = 0.000145038 psi.
Is a Pascal bigger than a Pound per Square Inch?
Yes. One Pascal is larger than one Pound per Square Inch because 1 Pa equals 0.000145038 psi, which is less than 1.
When do you need to convert between Pascals and Pounds per Square Inch?
An imperial unit of pressure equal to one pound-force applied over one square inch (exactly 6,894. Pascal and Pound per Square Inch are both pressure units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.