Millimeters of Mercury to Hectopascals (mmHg → hPa)
Formula
1 mmHg = 1.33322 hPaConversion Table
| mmHg | hPa |
|---|---|
| 0 | 0 |
| 1.0000 | 1.3332 |
| 2.0000 | 2.6664 |
| 3.0000 | 3.9997 |
| 4.0000 | 5.3329 |
| 5.0000 | 6.6661 |
| 6.0000 | 7.9993 |
| 7.0000 | 9.3325 |
| 8.0000 | 10.666 |
| 9.0000 | 11.999 |
| 10.000 | 13.332 |
| 11.000 | 14.665 |
| 12.000 | 15.999 |
| 13.000 | 17.332 |
| 14.000 | 18.665 |
| 15.000 | 19.998 |
| 16.000 | 21.332 |
| 17.000 | 22.665 |
| 18.000 | 23.998 |
| 19.000 | 25.331 |
| mmHg | hPa |
|---|---|
| 20.000 | 26.664 |
| 21.000 | 27.998 |
| 22.000 | 29.331 |
| 23.000 | 30.664 |
| 24.000 | 31.997 |
| 25.000 | 33.331 |
| 26.000 | 34.664 |
| 27.000 | 35.997 |
| 28.000 | 37.330 |
| 29.000 | 38.663 |
| 30.000 | 39.997 |
| 31.000 | 41.330 |
| 32.000 | 42.663 |
| 33.000 | 43.996 |
| 34.000 | 45.329 |
| 35.000 | 46.663 |
| 36.000 | 47.996 |
| 37.000 | 49.329 |
| 38.000 | 50.662 |
| 39.000 | 51.996 |
| mmHg | hPa |
|---|---|
| 40.000 | 53.329 |
| 41.000 | 54.662 |
| 42.000 | 55.995 |
| 43.000 | 57.328 |
| 44.000 | 58.662 |
| 45.000 | 59.995 |
| 46.000 | 61.328 |
| 47.000 | 62.661 |
| 48.000 | 63.995 |
| 49.000 | 65.328 |
| 50.000 | 66.661 |
| 51.000 | 67.994 |
| 52.000 | 69.327 |
| 53.000 | 70.661 |
| 54.000 | 71.994 |
| 55.000 | 73.327 |
| 56.000 | 74.660 |
| 57.000 | 75.994 |
| 58.000 | 77.327 |
| 59.000 | 78.660 |
| mmHg | hPa |
|---|---|
| 60.000 | 79.993 |
| 61.000 | 81.326 |
| 62.000 | 82.660 |
| 63.000 | 83.993 |
| 64.000 | 85.326 |
| 65.000 | 86.659 |
| 66.000 | 87.993 |
| 67.000 | 89.326 |
| 68.000 | 90.659 |
| 69.000 | 91.992 |
| 70.000 | 93.325 |
| 71.000 | 94.659 |
| 72.000 | 95.992 |
| 73.000 | 97.325 |
| 74.000 | 98.658 |
| 75.000 | 99.992 |
| 76.000 | 101.32 |
| 77.000 | 102.66 |
| 78.000 | 103.99 |
| 79.000 | 105.32 |
Millimeters of Mercury to Hectopascals Conversion
Converting Millimeters of Mercury (mmHg) to Hectopascals (hPa) is a common pressure conversion. 1 mmHg equals 1.33322 hPa. For example, 100 mmHg is equal to 133.322 hPa.
Quick Reference Values
1 mmHg = 1.33322 hPa. 5 mmHg = 6.6661 hPa. 10 mmHg = 13.3322 hPa. 25 mmHg = 33.3305 hPa. 50 mmHg = 66.661 hPa. 100 mmHg = 133.322 hPa.
What is Millimeters of Mercury?
Millimeters of Mercury (mmHg) is a unit of pressure. Millimeters of mercury (mmHg) measure pressure based on a column of mercury 1 millimeter high. It equals exactly 133.322387415 pascals, the SI derived unit for pressure, as defined by international standards. This unit is widely used in medical and meteorological fields for blood pressure and barometric pressure readings [nist-si-guide]. The mmHg unit originated from the mercury barometer invented by Evangelista Torricelli in 1643. It became standardized as a pressure unit because mercury's density allowed precise atmospheric pressure measurements. The adoption of the exact pascal conversion was formalized by the BIPM in the 20th century [bipm-si-brochure]. Millimeters of mercury remain common in healthcare worldwide, especially for blood pressure monitoring in the US and Europe. Meteorologists also use mmHg in weather reporting, though pascals are preferred in scientific contexts. Regulatory standards by ISO and NIST recognize mmHg for specific applications [nist-sp-811].
What is Hectopascals?
Hectopascals (hPa) is a unit of pressure. The hectopascal is a unit of pressure equal to 100 pascals. It is defined as exactly 100 newtons per square meter (100 N/m²), where the pascal (Pa) is the SI derived unit of pressure. The hectopascal is widely used in meteorology for atmospheric pressure measurements and aligns with the SI system as per international standards [bipm-si-brochure]. The pascal unit was named after Blaise Pascal and officially adopted by the General Conference on Weights and Measures (CGPM) in 1971. The hectopascal emerged as a convenient multiple used in meteorology to represent atmospheric pressure values in the 20th century [cgpm-resolutions]. Hectopascals are standard in weather reports worldwide, especially in Europe, Asia, and Australia. The US National Weather Service uses millibars, numerically equivalent to hectopascals, for atmospheric pressure. It is recognized by ISO 80000 as a unit of pressure [iso-80000].
Common Misspellings
People often search for this conversion using these alternate spellings: millimeter of mercury, mm hg, millimeters mercury, mmhg, millimeters of mercery, hecto pascals, hecto-pascals, hecto pascal, hec topascal. All of these refer to the Millimeters of Mercury to Hectopascals conversion.