Pressure
hPatopsi
Convert hectopascals (hPa) to pounds-force per square inch (psi).
Factor1 hPa = 0.01450377 psi
Converter
hPa
Accepts numbers or expressions, e.g. 150 + 14.7
Result
psi
Rendered to 6 significant figures.
Formula
Formula
psi = hPa × 0.01450377
Multiply any value in hectopascals by 0.01450377 to obtain the value in pounds-force per square inch.
Worked example
Convert 1000 hPa to psi.
- 01Start with 1000 hPa.
- 02Multiply by the conversion factor: 1000 × 0.01450377 = 14.5038 psi.
Result1000 hPa = 14.5038 psi
Conversion table
| hPa | psi |
|---|---|
| 1 | 0.014504 |
| 2 | 0.029008 |
| 5 | 0.072519 |
| 10 | 0.14504 |
| 20 | 0.29008 |
| 50 | 0.72519 |
| 100 | 1.4504 |
| 200 | 2.9008 |
| 500 | 7.2519 |
| 1000 | 14.504 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from hPa to psi?
1 hPa equals 0.01450377 psi. To convert, multiply the value in hectopascals by 0.01450377.
How do I convert 1 hPa to psi?
1 hPa = 0.0145038 psi. For any value, multiply by 0.01450377.
How do I convert psi back to hPa?
Divide by the same factor — or equivalently, multiply by 68.94757. So 1 psi = 68.9476 hPa.
When would I need to convert hectopascal to pound-force per square inch?
Pressure conversions between hPa and psi are common when working with mixed-vendor instrumentation, when piping codes use different units to process datasheets, or when converting field readings into SI for hydraulic calculations.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).