Convert Kilopascals to Pounds per Square Inch
Instantly convert Kilopascals (kPa) to Pounds per Square Inch (psi) with our free online calculator.
Formula: kPa to psi — multiply by 0.145038
Reference Table
| Kilopascals (kPa) | Pounds per Square Inch (psi) |
|---|---|
| 1 | 0.145038 |
| 5 | 0.725189 |
| 10 | 1.45038 |
| 25 | 3.62594 |
| 50 | 7.25189 |
| 100 | 14.5038 |
How to Convert Kilopascals to Pounds per Square Inch
Formula
To convert Kilopascals (kPa) to Pounds per Square Inch (psi): multiply by 0.145038
Step-by-Step
- Start with your value in Kilopascals (kPa).
- Multiply by 0.145038 to perform the conversion.
- The result is your value expressed in Pounds per Square Inch (psi).
Conversion Factor
1 kPa = 0.145038 psi
Reverse Factor
1 psi = 6.89476 kPa
Worked Example
Convert 25 Kilopascals to Pounds per Square Inch: 25 kPa = 3.62594 psi
About Kilopascal (kPa)
A metric unit of pressure equal to exactly 1,000 pascals (1 kPa = 1,000 N/m²). Kilopascals are the everyday SI pressure unit outside the US: passenger car tire pressure in Europe and Australia is specified in kPa (typically 220-250 kPa cold), building HVAC duct static pressure is in kPa, and the ISO 5198 / IEC 60534 valve standards quote rated pressures in kPa. Weather forecasters quote surface atmospheric pressure in hectopascals (1 kPa = 10 hPa); a typical sea-level barometric reading is 1013 hPa = 101.3 kPa. The kPa is the standard report unit in clinical respiratory physiology (PaCO₂, PaO₂ in some ICUs) and in scientific gauge pressure measurement. Common conversions: kPa to psi is divide by 6.895; kPa to bar is divide by 100; kPa to mmHg is multiply by 7.5006.
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 Kilopascal equals 0.145038 Pounds per Square Inch
- 1 Pound per Square Inch equals 6.89476 Kilopascals
- Kilopascal 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 Kilopascal belongs to the metric system
- The Pound per Square Inch belongs to the imperial system
Common Kilopascal to Pound per Square Inch Conversions
| Kilopascals (kPa) | Pounds per Square Inch (psi) |
|---|---|
| 0.1 | 0.0145038 |
| 0.5 | 0.0725189 |
| 1 | 0.145038 |
| 2 | 0.290075 |
| 5 | 0.725189 |
| 10 | 1.45038 |
| 14.696 | 2.13147 |
| 15 | 2.17557 |
| 20 | 2.90075 |
| 25 | 3.62594 |
| 50 | 7.25189 |
| 100 | 14.5038 |
| 150 | 21.7557 |
| 200 | 29.0075 |
| 500 | 72.5189 |
| 1000 | 145.038 |
Understanding Kilopascals
The Kilopascal (symbol: kPa) is a unit of pressure. A metric unit of pressure equal to exactly 1,000 pascals (1 kPa = 1,000 N/m²). Kilopascals are the everyday SI pressure unit outside the US: passenger car tire pressure in Europe and Australia is specified in kPa (typically 220-250 kPa cold), building HVAC duct static pressure is in kPa, and the ISO 5198 / IEC 60534 valve standards quote rated pressures in kPa. Weather forecasters quote surface atmospheric pressure in hectopascals (1 kPa = 10 hPa); a typical sea-level barometric reading is 1013 hPa = 101.3 kPa. The kPa is the standard report unit in clinical respiratory physiology (PaCO₂, PaO₂ in some ICUs) and in scientific gauge pressure measurement. Common conversions: kPa to psi is divide by 6.895; kPa to bar is divide by 100; kPa to mmHg is multiply by 7.5006.
It belongs to the metric measurement system.
Kilopascals 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 Kilopascals to Pounds per Square Inch?
Engineers, mechanics, and scientists frequently need to convert pressure between Kilopascals 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 Kilopascals to Pounds per Square Inch?
A metric unit of pressure equal to exactly 1,000 pascals (1 kPa = 1,000 N/m²). To convert Kilopascals to Pounds per Square Inch, multiply by 0.145038. For example, 25 kPa equals 3.62594 psi.
How many Pounds per Square Inch are in 1 Kilopascal?
There are 0.145038 Pounds per Square Inch in 1 Kilopascal.
How many Kilopascals are in 1 Pound per Square Inch?
There are 6.89476 Kilopascals in 1 Pound per Square Inch.
What is the formula for Kilopascal to Pound per Square Inch conversion?
The formula is: multiply by 0.145038. This means 1 kPa = 0.145038 psi.
Is a Kilopascal bigger than a Pound per Square Inch?
Yes. One Kilopascal is larger than one Pound per Square Inch because 1 kPa equals 0.145038 psi, which is less than 1.
When do you need to convert between Kilopascals and Pounds per Square Inch?
An imperial unit of pressure equal to one pound-force applied over one square inch (exactly 6,894. Kilopascal 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.