How to Convert PSI to Kilopascals (psi to kPa)
Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars. This guide shows how to convert psi into kilopascals by hand, with examples and a quick-reference table.
The conversion
To convert psi to kilopascals, multiply the value by 6.894757. To go the other way, divide by the same number (or multiply by 0.1450377439). For a quick estimate, multiply by about 6.9.
Kilopascals = psi × 6.894757
Worked examples
- 3 psi = 20.6843 kPa
- 12.5 psi = 86.1845 kPa
- 75 psi = 517.1068 kPa
PSI to Kilopascals table
| PSI | Kilopascals |
|---|---|
| 1 psi | 6.8948 kPa |
| 2 psi | 13.7895 kPa |
| 5 psi | 34.4738 kPa |
| 10 psi | 68.9476 kPa |
| 20 psi | 137.8951 kPa |
| 25 psi | 172.3689 kPa |
| 50 psi | 344.7378 kPa |
| 100 psi | 689.4757 kPa |
| 250 psi | 1,723.69 kPa |
| 500 psi | 3,447.38 kPa |
| 1,000 psi | 6,894.76 kPa |
Common questions
Is psi to kPa exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Kilopascals to PSI converter.
Mistakes to avoid
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Background
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
For any value, use the PSI to Kilopascals Converter or browse all pressure converters.
Run your own numbers: PSI to Kilopascals Converter