Table Of Contents
Pounds-force per square inch to millibar Conversion
1 pounds-force per square inch (psi) is equal to 68.94757293 millibar (mbar).
1 psi = 68.94757293 mbar
or
1 mbar = 0.01450377377 psi
Formula
To convert a pressure from pounds-force per square inch (psi) to millibar (mbar), multiply the pressure in pounds-force per square inch by 68.94757293
p(mbar) = p(psi) × 68.94757293
Examples:
Convert 2 pounds-force per square inch to millibar:
p(mbar) = 2psi × 68.94757293 = 137.8951459 mbar
Conversion table
| Pounds-force per square inch (psi) | Millibar (mbar) |
|---|---|
| 1 psi | 68.947572932 mbar |
| 2 psi | 137.895145863 mbar |
| 3 psi | 206.842718795 mbar |
| 5 psi | 344.737864658 mbar |
| 10 psi | 689.475729317 mbar |
| 20 psi | 1378.951458634 mbar |
| 25 psi | 1723.689323292 mbar |
| 50 psi | 3447.378646584 mbar |
| 100 psi | 6894.757293168 mbar |
| 250 psi | 17236.89323292 mbar |
| 500 psi | 34473.78646584 mbar |
| 1000 psi | 68947.57293168 mbar |
| Millibar (mbar) | Pounds-force per square inch (psi) |
|---|---|
| 1 mbar | 0.014503774 psi |
| 2 mbar | 0.029007548 psi |
| 3 mbar | 0.043511321 psi |
| 5 mbar | 0.072518869 psi |
| 10 mbar | 0.145037738 psi |
| 20 mbar | 0.290075475 psi |
| 25 mbar | 0.362594344 psi |
| 50 mbar | 0.725188689 psi |
| 100 mbar | 1.450377377 psi |
| 250 mbar | 3.625943443 psi |
| 500 mbar | 7.251886887 psi |
| 1000 mbar | 14.503773773 psi |
Frequently asked questions
How do I convert pounds-force per square inch to millibar?
Multiply the value in pounds-force per square inch by 68.94757293 to get the result in millibar. For example, 5 psi × 68.94757293 = 344.737864658 mbar.
How many millibar are in 1 pounds-force per square inch?
1 pounds-force per square inch (psi) is equal to 68.947572932 millibar (mbar).
How do I convert millibar back to pounds-force per square inch?
Use the inverse operation: divide the value in millibar by 68.94757293 to get the result in pounds-force per square inch.
How accurate is the pounds-force per square inch to millibar conversion?
The converter multiplies by the conversion factor 68.94757293 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- ISO 80000-4:2019 — Quantities and units — Part 4: Mechanics
- NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically (NIST SP 811, 2008 edition)
- Resolution 4 of the 10th CGPM (1954): Definition of the standard atmosphere
