Kilopascals to pounds per square inch
Multiply kilopascals by 0.145038 to get pounds per square inch.
200 kPa = 29.0075 psi
How to convert kilopascals to pounds per square inch
The pound per square inch is pounds-force per square inch, exactly 6894.757293168 pascals. The kilopascal is one thousand pascals (10³ Pa), the metric pressure unit.
Worked example — 200 kPa: 200 × 0.145038 = 29.0075 psi.
Kilopascals to pounds per square inch table
| Kilopascals | Pounds per square inch |
|---|---|
| 1 kPa | 0.145038 psi |
| 50 kPa | 7.2519 psi |
| 100 kPa | 14.5038 psi |
| 150 kPa | 21.7557 psi |
| 200 kPa | 29.0075 psi |
| 220 kPa | 31.9083 psi |
| 250 kPa | 36.2594 psi |
| 300 kPa | 43.5113 psi |
| 500 kPa | 72.5189 psi |
Reverse and related
About kilopascals and pounds per square inch
Kilopascal (kPa)
1 kPa = 0.145038 psiDefinition. One thousand pascals (10³ Pa), the metric pressure unit
History and origin
The kilopascal is one thousand pascals, a metric multiple of the SI pressure unit. It gives conveniently sized numbers for everyday pressures.
Current use
Kilopascals are used for tyre pressure in metric countries and throughout engineering.
Source: NIST SP 811, App. B; ISO 80000-4. Exact SI values are definitional (bar = 10⁵ Pa, atm = 101 325 Pa) or derived from the pound (NIST HB 44) and standard gravity 9.80665 m/s² (psi)
Pound per square inch (psi)
1 psi = 6.8948 kPaDefinition. Pounds-force per square inch, exactly 6894.757293168 pascals
History and origin
The pound per square inch comes from the imperial system, expressing pressure as pounds-force spread over a square inch. It equals about 6895 pascals.
Current use
Psi is the everyday pressure unit in the United States for tyre pressure, plumbing and compressed air.
Source: NIST SP 811, App. B; ISO 80000-4. Exact SI values are definitional (bar = 10⁵ Pa, atm = 101 325 Pa) or derived from the pound (NIST HB 44) and standard gravity 9.80665 m/s² (psi)
Where people use this
Kilopascals: tyre pressure (metric), engineering. Pounds per square inch: tyre pressure in the US, plumbing, compressed air. 100 kPa is about 14.5 psi.
Every value is carried to full double precision; the display is rounded.
Both units are defined in NIST SP 811, App. B; ISO 80000-4. Exact SI values are definitional (bar = 10⁵ Pa, atm = 101 325 Pa) or derived from the pound (NIST HB 44) and standard gravity 9.80665 m/s² (psi).
Questions people ask
How many psi is 100 kPa?
100 kPa is about 14.5 psi.
How many psi is 220 kPa?
220 kPa is about 31.9 psi.
How many kPa in a psi?
One psi is about 6.895 kPa.