Inches of Mercury to Pascals (inHg → Pa)
Formula
1 inHg = 3386.389 PaConversion Table
| inHg | Pa |
|---|---|
| 0 | 0 |
| 1.0000 | 3,386.4 |
| 2.0000 | 6,772.8 |
| 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 | Pa |
|---|---|
| 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 | 101,590 |
| 31.000 | 104,980 |
| 32.000 | 108,360 |
| 33.000 | 111,750 |
| 34.000 | 115,140 |
| 35.000 | 118,520 |
| 36.000 | 121,910 |
| 37.000 | 125,300 |
| 38.000 | 128,680 |
| 39.000 | 132,070 |
| inHg | Pa |
|---|---|
| 40.000 | 135,460 |
| 41.000 | 138,840 |
| 42.000 | 142,230 |
| 43.000 | 145,610 |
| 44.000 | 149,000 |
| 45.000 | 152,390 |
| 46.000 | 155,770 |
| 47.000 | 159,160 |
| 48.000 | 162,550 |
| 49.000 | 165,930 |
| 50.000 | 169,320 |
| 51.000 | 172,710 |
| 52.000 | 176,090 |
| 53.000 | 179,480 |
| 54.000 | 182,870 |
| 55.000 | 186,250 |
| 56.000 | 189,640 |
| 57.000 | 193,020 |
| 58.000 | 196,410 |
| 59.000 | 199,800 |
| inHg | Pa |
|---|---|
| 60.000 | 203,180 |
| 61.000 | 206,570 |
| 62.000 | 209,960 |
| 63.000 | 213,340 |
| 64.000 | 216,730 |
| 65.000 | 220,120 |
| 66.000 | 223,500 |
| 67.000 | 226,890 |
| 68.000 | 230,270 |
| 69.000 | 233,660 |
| 70.000 | 237,050 |
| 71.000 | 240,430 |
| 72.000 | 243,820 |
| 73.000 | 247,210 |
| 74.000 | 250,590 |
| 75.000 | 253,980 |
| 76.000 | 257,370 |
| 77.000 | 260,750 |
| 78.000 | 264,140 |
| 79.000 | 267,520 |
Inches of Mercury to Pascals Conversion
Converting Inches of Mercury (inHg) to Pascals (Pa) is a common pressure conversion. 1 inHg equals 3,386.389 Pa. For example, 100 inHg is equal to 338,638.9 Pa.
Quick Mental Math: Inches of Mercury to Pascals
Multiply inches-of-mercury by approximately 3386.39 to convert to pascals.
Why is converting Inches of Mercury to Pascals tricky?
The non-integer multiplier 3386.39 is imprecise for mental estimation.
Quick Reference Values
1 inHg = 3,386.389 Pa. 5 inHg = 16,931.945 Pa. 10 inHg = 33,863.89 Pa. 25 inHg = 84,659.725 Pa. 50 inHg = 169,319.45 Pa. 100 inHg = 338,638.9 Pa.
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 Pascals?
Pascals (Pa) is a unit of pressure. The pascal (Pa) is the SI derived unit of pressure, defined as one newton per square meter (1 Pa = 1 N/m²). It quantifies force applied evenly over an area and is expressed as kg·m⁻¹·s⁻² in base SI units [bipm-si-brochure]. Named after Blaise Pascal, the pascal was adopted by BIPM in 1971 to replace older pressure units and standardize measurement in the SI system. It reflects the link between force and area in pressure measurements [bipm-si-brochure]. Pascals are the standard pressure unit in scientific research, meteorology, and engineering globally. Countries following SI, including members of ISO and NIST guidelines, use pascals for atmospheric and mechanical pressure [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: inch of mercury, inch-mercury, in hg, inches mercury, pascal, pascals, pascel, pascall, pasceles. All of these refer to the Inches of Mercury to Pascals conversion.