How to convert hectopascals to inches of mercury
inHg = hPa × 0.02952998016
Example: 5 hPa × 0.02952998016 = 0.1476499008 inHg
Hectopascals to Inches of Mercury table
| Hectopascals (hPa) | Inches of Mercury (inHg) |
|---|---|
| 0.5 hPa | 0.01476499 inHg |
| 1 hPa | 0.02952998 inHg |
| 2 hPa | 0.05905996 inHg |
| 3 hPa | 0.08858994 inHg |
| 4 hPa | 0.11811992 inHg |
| 5 hPa | 0.1476499 inHg |
| 6 hPa | 0.17717988 inHg |
| 7 hPa | 0.20670986 inHg |
| 8 hPa | 0.23623984 inHg |
| 9 hPa | 0.26576982 inHg |
| 10 hPa | 0.2952998 inHg |
| 15 hPa | 0.4429497 inHg |
| 20 hPa | 0.5905996 inHg |
| 25 hPa | 0.7382495 inHg |
| 30 hPa | 0.8858994 inHg |
| 40 hPa | 1.1811992 inHg |
| 50 hPa | 1.476499 inHg |
| 75 hPa | 2.2147485 inHg |
| 100 hPa | 2.952998 inHg |
| 250 hPa | 7.382495 inHg |
| 500 hPa | 14.76499 inHg |
| 1,000 hPa | 29.52998 inHg |
About these units
Hectopascals (hPa): A hectopascal is 100 Pa, identical to the millibar. Weather maps show air pressure in hPa.
Inches of Mercury (inHg): An inch of mercury is about 3,386.39 Pa, used for barometric pressure in US weather reports and aviation.
Frequently asked questions
How many inches of mercury are in 1 hectopascal?
1 hectopascal (hPa) equals 0.02952998016 inches of mercury (inHg).
How do I convert hPa to inHg?
Multiply the value in hectopascals by 0.02952998016. For example, 5 hPa × 0.02952998016 = 0.1476499008 inHg.
How do I convert inches of mercury back to hectopascals?
Multiply by 33.86389 (or divide by 0.02952998016). 1 inHg = 33.86389 hPa.
What is a hectopascal?
A hectopascal is 100 Pa, identical to the millibar. Weather maps show air pressure in hPa.
Conversion factors come from exact international definitions (NIST SP 811, BIPM) where they exist. Results show up to 10 significant digits. Need every pressure unit at once? Use the Pressure Converter.