PSI to Kilopascals (psi to kPa)
1 pound per square inch equals 6.894757293 kilopascals (rounded).
How to convert pounds per square inch to kilopascals
To convert pounds per square inch to kilopascals, multiply the number of pounds per square inch by 6.894757293. The factor is rounded to 10 significant digits. To go the other way, multiply kilopascals by 0.1450377377 (rounded).
kilopascals = pounds per square inch × 6.894757293
Example: 10 pounds per square inch = 68.94757293 kilopascals.
About these units
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)
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
Related conversions
- Kilopascals to PSI (reverse)
- PSI to pascals
- PSI to bars
- PSI to standard atmospheres
- PSI to hectopascals
- PSI to megapascals
- PSI to millibars
- PSI to torr
- PSI to millimeters of mercury
- PSI to inches of mercury
- PSI to gigapascals
- PSI to kilopounds per square inch
- PSI to millimeters of water
- Pascals to kilopascals
- Bars to kilopascals
- Standard atmospheres to kilopascals
- Hectopascals to kilopascals
- Megapascals to kilopascals
- Millibars to kilopascals
- Torr to kilopascals
- Millimeters of mercury to kilopascals
- Inches of mercury to kilopascals
- Gigapascals to kilopascals
- Kilopounds per square inch to kilopascals
- Millimeters of water to kilopascals
See all pressure units.