Convert Pounds per Square Inch to Pascals
Instantly convert Pounds per Square Inch (psi) to Pascals (Pa) with our free online calculator.
Formula: psi to Pa — multiply by 6894.76
Reference Table
| Pounds per Square Inch (psi) | Pascals (Pa) |
|---|---|
| 1 | 6894.76 |
| 5 | 34473.8 |
| 10 | 68947.6 |
| 25 | 172369 |
| 50 | 344738 |
| 100 | 689476 |
How to Convert Pounds per Square Inch to Pascals
Formula
To convert Pounds per Square Inch (psi) to Pascals (Pa): multiply by 6894.76
Step-by-Step
- Start with your value in Pounds per Square Inch (psi).
- Multiply by 6894.76 to perform the conversion.
- The result is your value expressed in Pascals (Pa).
Conversion Factor
1 psi = 6894.76 Pa
Reverse Factor
1 Pa = 0.000145038 psi
Worked Example
Convert 25 Pounds per Square Inch to Pascals: 25 psi = 172369 Pa
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.
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.
Quick Facts
- 1 Pound per Square Inch equals 6894.76 Pascals
- 1 Pascal equals 0.000145038 Pounds per Square Inch
- Pound per Square Inch is a unit of pressure
- Pascal is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Pound per Square Inch belongs to the imperial system
- The Pascal belongs to the metric system
Common Pound per Square Inch to Pascal Conversions
| Pounds per Square Inch (psi) | Pascals (Pa) |
|---|---|
| 0.1 | 689.476 |
| 0.5 | 3447.38 |
| 1 | 6894.76 |
| 2 | 13789.5 |
| 5 | 34473.8 |
| 10 | 68947.6 |
| 14.696 | 101325 |
| 15 | 103421 |
| 20 | 137895 |
| 25 | 172369 |
| 50 | 344738 |
| 100 | 689476 |
| 150 | 1034210 |
| 200 | 1378950 |
| 500 | 3447380 |
| 1000 | 6894760 |
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.
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.
Why Convert Pounds per Square Inch to Pascals?
Engineers, mechanics, and scientists frequently need to convert pressure between Pounds per Square Inch and Pascals 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 Pounds per Square Inch to Pascals?
An imperial unit of pressure equal to one pound-force applied over one square inch (exactly 6,894. To convert Pounds per Square Inch to Pascals, multiply by 6894.76. For example, 25 psi equals 172369 Pa.
How many Pascals are in 1 Pound per Square Inch?
There are 6894.76 Pascals in 1 Pound per Square Inch.
How many Pounds per Square Inch are in 1 Pascal?
There are 0.000145038 Pounds per Square Inch in 1 Pascal.
What is the formula for Pound per Square Inch to Pascal conversion?
The formula is: multiply by 6894.76. This means 1 psi = 6894.76 Pa.
Is a Pound per Square Inch bigger than a Pascal?
No. One Pound per Square Inch is smaller than one Pascal because 1 psi equals 6894.76 Pa, which is greater than 1.
When do you need to convert between Pounds per Square Inch and Pascals?
The SI derived unit of pressure (and stress), formally defined as one newton per square meter (N/m²) by ISO 80000-4. Pound per Square Inch and Pascal 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.