Megapascals (MPa) to Inches of mercury (inHg) Conversion
Megapascals
The megapascal (MPa) is a unit of pressure equal to exactly 1,000,000 pascals (10⁶ Pa) and is the standard unit for expressing material strength, hydraulic system pressure, and structural loading in engineering. The tensile strength of structural steel is approximately 400–600 MPa; high-strength carbon fibre composites can exceed 3,500 MPa. Hydraulic systems in heavy machinery operate at 20–70 MPa. In geology, lithostatic pressure in the Earth's crust is measured in MPa and GPa.
Inches of mercury
The inch of mercury (inHg) is a unit of pressure equal to the pressure exerted by a column of mercury 1 inch (25.4 mm) high — approximately 3,386.39 Pa or 0.0334 atm. It is used in US aviation for altimeter settings (standard pressure is 29.92 inHg) and in US weather reports for barometric pressure. Pilots set their altimeters in inHg based on local barometric pressure to ensure accurate altitude readings.
| Megapascals (MPa) | Inches of mercury (inHg) |
|---|---|
| 0.1 MPa | 29.53 inHg |
| 1 MPa | 295.2998 inHg |
| 2 MPa | 590.5997 inHg |
| 3 MPa | 885.8995 inHg |
| 5 MPa | 1,476.4992 inHg |
| 10 MPa | 2,952.9983 inHg |
| 20 MPa | 5,905.9967 inHg |
| 30 MPa | 8,858.995 inHg |
| 50 MPa | 14,764.9917 inHg |
| 100 MPa | 29,529.9833 inHg |
| 1000 MPa | 295,299.833 inHg |
Frequently Asked Questions (FAQ)
How many inches of mercury are in 1 megapascals?
1 megapascals (MPa) is exactly 295.300 inches of mercury (inHg).
How do I convert megapascals to inches of mercury?
Multiply the value in megapascals by 295.300 to get the result in inches of mercury. Or use the converter above — type any number and see the result instantly.