Pressure
mbartopsi
Convert millibars (mbar) to pounds-force per square inch (psi).
Factor1 mbar = 0.01450377 psi
Converter
mbar
Accepts numbers or expressions, e.g. 150 + 14.7
Result
psi
Rendered to 6 significant figures.
Formula
Formula
psi = mbar × 0.01450377
Multiply any value in millibars by 0.01450377 to obtain the value in pounds-force per square inch.
Worked example
Convert 1000 mbar to psi.
- 01Start with 1000 mbar.
- 02Multiply by the conversion factor: 1000 × 0.01450377 = 14.5038 psi.
Result1000 mbar = 14.5038 psi
Conversion table
| mbar | 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 mbar to psi?
1 mbar equals 0.01450377 psi. To convert, multiply the value in millibars by 0.01450377.
How do I convert 1 mbar to psi?
1 mbar = 0.0145038 psi. For any value, multiply by 0.01450377.
How do I convert psi back to mbar?
Divide by the same factor — or equivalently, multiply by 68.94757. So 1 psi = 68.9476 mbar.
When would I need to convert millibar to pound-force per square inch?
Pressure conversions between mbar 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).