Kilopascals to PSI (kPa to psi)
1 kilopascal equals 0.1450377377 pounds per square inch (rounded).
How to convert kilopascals to pounds per square inch
To convert kilopascals to pounds per square inch, multiply the number of kilopascals by 0.1450377377. The factor is rounded to 10 significant digits. To go the other way, multiply pounds per square inch by 6.894757293 (rounded).
pounds per square inch = kilopascals × 0.1450377377
Example: 10 kilopascals = 1.450377377 pounds per square inch.
About these units
Kilopascal (kPa)
1,000 pascals. Used for tire pressures, weather reports in many countries and engineering.
Kilopascal is the form of the pascal that most people actually use. The pascal itself is very small, so outside meteorology the kilopascal became the common choice in most fields, and it equals one centibar. Medical elastography reports tissue stiffness in kPa, and Canada reports atmospheric pressure in kPa rather than hectopascals.
A standard atmosphere is 101.325 kPa. In 1982 IUPAC recommended a different reference for chemistry, a standard pressure of exactly 100 kPa, which split the older convention of 1 atm into two competing standards.
Blood pressure shows how the units line up. One mmHg is 0.13332 kPa, and a normal reading is below about 16.0 kPa systolic and 10.7 kPa diastolic, the same thing as the familiar 120 over 80 in millimeters of mercury.
1 kilopascal = 1,000 pascals (exactly).
Sources: Wikipedia: Pascal (unit); Wikipedia: Standard atmosphere (unit); Wikipedia: Millimetre of mercury
Pound Per Square Inch (psi)
About 6,894.757 pascals. The common unit for tire pressure, hydraulics and gas pipelines in the US.
Unlike most pressure units, psi has no namesake: it simply spells out its own definition, one pound-force acting on one square inch, and it is based on avoirdupois units. Used mainly in the United States, it is about 6.895 kilopascals.
The letters after the unit matter. Psia is measured against a vacuum, while psig is measured against the surrounding air, so at sea level, where the atmosphere is about 14.7 psi, you add that amount to a gauge reading to get an absolute one. A bicycle tire at 65 psig is therefore at 79.7 psia, and the label psid means a difference between two pressures rather than a reference to ambient air.
Typical automobile tires are listed at about 32 psig, and road racing bicycle tires at about 120 psig. One standard atmosphere is 14.696 psi, which gives a feel for how many multiples of sea-level air those tire pressures represent.
1 pound per square inch = 6,894.757293 pascals (approximately).
Sources: Wikipedia: Pounds per square inch; Wikipedia: Standard atmosphere (unit)
Related conversions
- PSI to kilopascals (reverse)
- Kilopascals to pascals
- Kilopascals to bars
- Kilopascals to standard atmospheres
- Kilopascals to hectopascals
- Kilopascals to megapascals
- Kilopascals to millibars
- Kilopascals to torr
- Kilopascals to millimeters of mercury
- Kilopascals to inches of mercury
- Kilopascals to gigapascals
- Kilopascals to kilopounds per square inch
- Kilopascals to millimeters of water
- Pascals to PSI
- Bars to PSI
- Standard atmospheres to PSI
- Hectopascals to PSI
- Megapascals to PSI
- Millibars to PSI
- Torr to PSI
- Millimeters of mercury to PSI
- Inches of mercury to PSI
- Gigapascals to PSI
- Kilopounds per square inch to PSI
- Millimeters of water to PSI
See all pressure units.