Psi to Millibars Converter
How to convert psi to millibars
millibars = psi × 68.9475729
To convert psi to millibars, multiply the number of psi by 68.9475729.
1 psi = 68.9475729 mbar
Examples
- A typical car tire pressure: 32 psi × 68.9475729 = 2,206.32233 mbar
- 100 psi × 68.9475729 = 6,894.75729 mbar
Good to know
Psi means pounds-force per square inch (lbf/in²). Gauge readings (psig) are measured relative to atmospheric pressure, absolute readings (psia) relative to a vacuum; the conversion factor is the same for both.
Psi to millibars conversion table
| Psi | Millibars (mbar) |
|---|---|
| 1 psi | 68.9475729 mbar |
| 5 psi | 344.737865 mbar |
| 10 psi | 689.475729 mbar |
| 14.7 psi | 1,013.52932 mbar |
| 15 psi | 1,034.21359 mbar |
| 20 psi | 1,378.95146 mbar |
| 25 psi | 1,723.68932 mbar |
| 30 psi | 2,068.42719 mbar |
| 32 psi | 2,206.32233 mbar |
| 35 psi | 2,413.16505 mbar |
| 40 psi | 2,757.90292 mbar |
| 45 psi | 3,102.64078 mbar |
| 50 psi | 3,447.37865 mbar |
| 60 psi | 4,136.85438 mbar |
| 80 psi | 5,515.80583 mbar |
| 100 psi | 6,894.75729 mbar |
Unit definitions
- Psi
- Psi is one pound-force per square inch, about 6894.757 pascals. It is the everyday pressure unit in the United States, used for tires, compressors and plumbing.
- Millibar (mbar)
- A millibar is one thousandth of a bar, exactly 100 pascals, and is identical to the hectopascal. It is used in meteorology for atmospheric pressure.