Psi to Inches Of Mercury Converter
How to convert psi to inches of mercury
inches of mercury = psi × 2.03602068
To convert psi to inches of mercury, multiply the number of psi by 2.03602068.
1 psi = 2.03602068 inHg
Examples
- A typical car tire pressure: 32 psi × 2.03602068 = 65.1526617 inHg
- 100 psi × 2.03602068 = 203.602068 inHg
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.
This is the conventional inch of mercury, about 3386.389 Pa. Values defined at a specific mercury temperature differ slightly, for example 3376.85 Pa at 60 °F.
Psi to inches of mercury conversion table
| Psi | Inches of mercury (inHg) |
|---|---|
| 1 psi | 2.03602068 inHg |
| 5 psi | 10.1801034 inHg |
| 10 psi | 20.3602068 inHg |
| 14.7 psi | 29.929504 inHg |
| 15 psi | 30.5403102 inHg |
| 20 psi | 40.7204135 inHg |
| 25 psi | 50.9005169 inHg |
| 30 psi | 61.0806203 inHg |
| 32 psi | 65.1526617 inHg |
| 35 psi | 71.2607237 inHg |
| 40 psi | 81.4408271 inHg |
| 45 psi | 91.6209305 inHg |
| 50 psi | 101.801034 inHg |
| 60 psi | 122.161241 inHg |
| 80 psi | 162.881654 inHg |
| 100 psi | 203.602068 inHg |
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.
- Inch of mercury (inHg)
- An inch of mercury is the pressure exerted by a 1 inch column of mercury, conventionally about 3386.389 pascals. It is used in the United States for barometric pressure in weather reports and aviation.