Inches of Mercury to Kilopascals (inHg → kPa)
Formula
1 inHg = 3.3863890000000003 kPaConversion Table
| inHg | kPa |
|---|---|
| 0 | 0 |
| 1.0000 | 3.3864 |
| 2.0000 | 6.7728 |
| 3.0000 | 10.159 |
| 4.0000 | 13.546 |
| 5.0000 | 16.932 |
| 6.0000 | 20.318 |
| 7.0000 | 23.705 |
| 8.0000 | 27.091 |
| 9.0000 | 30.478 |
| 10.000 | 33.864 |
| 11.000 | 37.250 |
| 12.000 | 40.637 |
| 13.000 | 44.023 |
| 14.000 | 47.409 |
| 15.000 | 50.796 |
| 16.000 | 54.182 |
| 17.000 | 57.569 |
| 18.000 | 60.955 |
| 19.000 | 64.341 |
| inHg | kPa |
|---|---|
| 20.000 | 67.728 |
| 21.000 | 71.114 |
| 22.000 | 74.501 |
| 23.000 | 77.887 |
| 24.000 | 81.273 |
| 25.000 | 84.660 |
| 26.000 | 88.046 |
| 27.000 | 91.433 |
| 28.000 | 94.819 |
| 29.000 | 98.205 |
| 30.000 | 101.59 |
| 31.000 | 104.98 |
| 32.000 | 108.36 |
| 33.000 | 111.75 |
| 34.000 | 115.14 |
| 35.000 | 118.52 |
| 36.000 | 121.91 |
| 37.000 | 125.30 |
| 38.000 | 128.68 |
| 39.000 | 132.07 |
| inHg | kPa |
|---|---|
| 40.000 | 135.46 |
| 41.000 | 138.84 |
| 42.000 | 142.23 |
| 43.000 | 145.61 |
| 44.000 | 149.00 |
| 45.000 | 152.39 |
| 46.000 | 155.77 |
| 47.000 | 159.16 |
| 48.000 | 162.55 |
| 49.000 | 165.93 |
| 50.000 | 169.32 |
| 51.000 | 172.71 |
| 52.000 | 176.09 |
| 53.000 | 179.48 |
| 54.000 | 182.87 |
| 55.000 | 186.25 |
| 56.000 | 189.64 |
| 57.000 | 193.02 |
| 58.000 | 196.41 |
| 59.000 | 199.80 |
| inHg | kPa |
|---|---|
| 60.000 | 203.18 |
| 61.000 | 206.57 |
| 62.000 | 209.96 |
| 63.000 | 213.34 |
| 64.000 | 216.73 |
| 65.000 | 220.12 |
| 66.000 | 223.50 |
| 67.000 | 226.89 |
| 68.000 | 230.27 |
| 69.000 | 233.66 |
| 70.000 | 237.05 |
| 71.000 | 240.43 |
| 72.000 | 243.82 |
| 73.000 | 247.21 |
| 74.000 | 250.59 |
| 75.000 | 253.98 |
| 76.000 | 257.37 |
| 77.000 | 260.75 |
| 78.000 | 264.14 |
| 79.000 | 267.52 |
Inches of Mercury to Kilopascals Conversion
Converting Inches of Mercury (inHg) to Kilopascals (kPa) is a common pressure conversion. 1 inHg equals 3.386389 kPa. For example, 100 inHg is equal to 338.6389 kPa.
Quick Reference Values
1 inHg = 3.386389 kPa. 5 inHg = 16.931945 kPa. 10 inHg = 33.86389 kPa. 25 inHg = 84.659725 kPa. 50 inHg = 169.31945 kPa. 100 inHg = 338.6389 kPa.
What is Inches of Mercury?
Inches of Mercury (inHg) is a unit of pressure. Inches of mercury measure pressure as the height of a mercury column in inches exerted by atmospheric or other pressures. One inch of mercury equals exactly 3,386.389 pascals (Pa). This unit is commonly used in barometry and aviation altimetry [nist-si-guide]. The unit originates from mercury barometers developed by Evangelista Torricelli in 1643. Measuring pressure via mercury column height became standard in meteorology and aviation. The inch unit was adapted for use in English-speaking countries [nist-si-guide]. Inches of mercury are used mainly in the United States and Canada for weather reports and aircraft altimeters. Internationally, the pascal is preferred, but inHg remains common in aviation and HVAC industries [nist-si-guide].
What is Kilopascals?
Kilopascals (kPa) is a unit of pressure. A kilopascal equals 1,000 pascals, where 1 pascal is one newton per square meter. It is a unit of pressure used to quantify forces applied over an area and is part of the SI system [bipm-si-brochure]. Standard atmospheric pressure is approximately 101.325 kPa. The pascal was named in 1971 by the CGPM in honor of Blaise Pascal, a pioneer in fluid mechanics and pressure measurement. The kilopascal was adopted to express practical pressure values more conveniently [cgpm-resolutions]. Kilopascals are widely used in meteorology, engineering, and automotive industries worldwide. Countries using the SI system apply kPa for tire pressure, weather reports, and material stress testing [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: inch of mercury, inch-mercury, in hg, inches mercury, kpa, kilo pascals, kilopascal. All of these refer to the Inches of Mercury to Kilopascals conversion.