Kilopascal (kPa) - Unit Information & Conversion
🔄 Quick Convert Kilopascal
What is a Kilopascal?
Kilopascal (kPa) = 1,000 pascals. International standard for tire pressure, weather reporting, engineering. More practical than pascals. 1 kPa = 0.145 PSI. Car tires: 220-240 kPa (32-35 PSI). Sea level: 101.325 kPa.
History of the Kilopascal
Derived from pascal (SI pressure unit, 1971). Kilo prefix makes measurements practical since 1 Pa is very small. Standard worldwide except USA for tire pressure, medical blood pressure equipment, industrial specifications.
Quick Answer
What is a Kilopascal? Kilopascal (kPa) = 1,000 pascals. International standard for tire pressure, blood pressure devices, engineering. 1 kPa = 0.145 PSI = 0.01 bar. Car tires: 220-240 kPa (32-35 PSI). Atmospheric pressure: ~101 kPa. Use our pressure converter for conversions.
Definition
1 kPa = 1,000 Pa = 0.145038 PSI = 0.01 bar = 10 hPa = 10 mbar = 0.00987 atm = 7.5 mmHg
Common Uses
Automotive: Tire pressure (international standard, except USA). Medical: Blood pressure equipment (replac ing mmHg in some regions). Meteorology: Atmospheric pressure (101.325 kPa at sea level). Engineering: Structural loads, material strength, HVAC systems.
Real-World Examples
Tire Pressures
- Bicycle (road): 600-800 kPa (87-116 PSI)
- Bicycle (mountain): 200-300 kPa (29-44 PSI)
- Motorcycle: 200-290 kPa (29-42 PSI)
- Passenger car: 210-250 kPa (30-36 PSI)
- Compact: 210-230 kPa (30-33 PSI)
- Sedan: 220-240 kPa (32-35 PSI)
- SUV: 230-250 kPa (33-36 PSI)
- Light truck: 240-280 kPa (35-40 PSI)
- Heavy truck: 550-900 kPa (80-130 PSI)
- Aircraft tire: 1,200-1,600 kPa (175-230 PSI)
Blood Pressure
- Normal: 120/80 mmHg = 16/10.7 kPa
- Elevated: 120-129/<80 mmHg = 16-17.2/<10.7 kPa
- Hypertension Stage 1: 130-139/80-89 mmHg = 17.3-18.5/10.7-11.9 kPa
- Hypertension Stage 2: ≥140/90 mmHg = ≥18.7/12 kPa
- Hypotension: <90/60 mmHg = <12/8 kPa
Atmospheric Pressure
- Sea level (standard): 101.325 kPa
- High pressure system: 102-106 kPa
- Low pressure system: 97-100 kPa
- Denver (1,609m): ~83.5 kPa
- Mount Everest summit: ~33.7 kPa
Industrial & Engineering
- Vacuum (rough): 1-10 kPa
- HVAC ductwork: 0.1-2.5 kPa
- Natural gas pipeline (residential): 1.75-7 kPa
- Water main pressure: 300-800 kPa (43-116 PSI)
- Compressed air (industrial): 600-1,000 kPa (87-145 PSI)
- Hydraulic systems: 7,000-35,000 kPa (1,000-5,000 PSI)
Kilopascal Conversion Formulas
To Pascal:
To Megapascal:
To Hectopascal:
To Bar:
To Millibar:
To Atmosphere:
To Technical Atmosphere:
To Torr:
To Millimeter of Mercury:
To Inch of Mercury:
To Pound per Square Inch:
To Kilopound per Square Inch:
To Kilogram-force per Square Centimeter:
To Kilogram-force per Square Meter:
To Millimeter of Water Column:
To Inch of Water Column:
Frequently Asked Questions
Formula: PSI = kPa × 0.145038 (or kPa ÷ 6.895) Examples:
- 100 kPa = 14.5 PSI
- 200 kPa = 29 PSI (bicycle tire)
- 220 kPa = 32 PSI (typical car tire)
- 240 kPa = 35 PSI (SUV tire)
- 600 kPa = 87 PSI (road bike) kPa to PSI converter →
Convert Kilopascal
Need to convert Kilopascal to other pressure units? Use our conversion tool.