PSI to kPa Converter
Convert pounds per square inch to kilopascals — multiply by 6.895. Results update as you type; exact factors shown.
One pound per square inch is 6.8948 kilopascals — see the exact factor, not a rounded rule of thumb.
How the psi to kpa converter works
Pressures convert through the pascal (1 N/m²). One bar is exactly 100 kPa; a standard atmosphere is exactly 101.325 kPa; 1 psi is 6.894757 kPa (a pound-force on a square inch); 1 mmHg is 133.322 Pa by the conventional definition.
The UK is metric for most trade and science but keeps miles, pints, stone and mpg (with the imperial gallon) in daily life.
Common pressure conversions
| From | To | Units |
|---|---|---|
| 10 psi | 68.9476 kPa | pounds per square inch to kilopascals |
| 14.7 psi | 101.3529 kPa | pounds per square inch to kilopascals |
| 20 psi | 137.8951 kPa | pounds per square inch to kilopascals |
| 25 psi | 172.3689 kPa | pounds per square inch to kilopascals |
| 30 psi | 206.8427 kPa | pounds per square inch to kilopascals |
| 32 psi | 220.6322 kPa | pounds per square inch to kilopascals |
| 35 psi | 241.3165 kPa | pounds per square inch to kilopascals |
| 40 psi | 275.7903 kPa | pounds per square inch to kilopascals |
| 50 psi | 344.7379 kPa | pounds per square inch to kilopascals |
| 60 psi | 413.6854 kPa | pounds per square inch to kilopascals |
| 100 psi | 689.4757 kPa | pounds per square inch to kilopascals |
| 150 psi | 1,034.2136 kPa | pounds per square inch to kilopascals |
Units in this converter and their exact factors
| Unit | Symbol | One unit in pascals |
|---|---|---|
| pascal | Pa | 1 pascal |
| kilopascal | kPa | 1,000 pascal |
| megapascal | MPa | 1,000,000 pascal |
| bar | bar | 100,000 pascal |
| millibar (hectopascal) | mbar | 100 pascal |
| standard atmosphere | atm | 101,325 pascal |
| pound per square inch | psi | 6,894.757293168 pascal |
| millimetre of mercury | mmHg | 133.322387415 pascal |
| inch of mercury | inHg | 3,386.389 pascal |
FAQFrequently asked questions about pressure conversion
How many kPa is 1 psi?
6.89476 kPa.
What is 32 psi in kPa?
221 kPa — a typical car tyre.
What is a pascal?
One newton per square metre, the SI unit of pressure.
Is a bar the same as 100 kPa?
Yes, exactly.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Physical Laboratory (NPL) — United Kingdom's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.