{"id":23288,"date":"2023-11-09T13:34:21","date_gmt":"2023-11-09T13:34:21","guid":{"rendered":"https:\/\/www.tipwho.com\/?post_type=article&#038;p=23288"},"modified":"2023-12-14T15:39:32","modified_gmt":"2023-12-14T15:39:32","slug":"639-mmhg-to-torr-pressure-conversion-calculator","status":"publish","type":"article","link":"https:\/\/www.tipwho.com\/article\/639-mmhg-to-torr-pressure-conversion-calculator\/","title":{"rendered":"639 mmHg to Torr (Pressure Conversion Calculator)"},"content":{"rendered":"<h1><span class=\"ez-toc-section\" id=\"Convert_639_mmHg_to_Torr_With_Our_Conversion_Calculator\"><\/span>Convert 639 mmHg to Torr With Our Conversion Calculator<span class=\"ez-toc-section-end\"><\/span><\/h1><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_64 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-660eebaa03161\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #757575;color:#757575\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #757575;color:#757575\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-660eebaa03161\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.tipwho.com\/article\/639-mmhg-to-torr-pressure-conversion-calculator\/#Convert_639_mmHg_to_Torr_With_Our_Conversion_Calculator\" title=\"Convert 639 mmHg to Torr With Our Conversion Calculator\">Convert 639 mmHg to Torr With Our Conversion Calculator<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.tipwho.com\/article\/639-mmhg-to-torr-pressure-conversion-calculator\/#639_mmHg_to_Torr_Converter\" title=\"639\u00a0mmHg\u00a0to\u00a0Torr\u00a0Converter\">639\u00a0mmHg\u00a0to\u00a0Torr\u00a0Converter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.tipwho.com\/article\/639-mmhg-to-torr-pressure-conversion-calculator\/#mmHg_to_Torr_Conversion_Table\" title=\"mmHg to Torr Conversion Table\">mmHg to Torr Conversion Table<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.tipwho.com\/article\/639-mmhg-to-torr-pressure-conversion-calculator\/#Conversion_Table_mmHg_to_Torr\" title=\"Conversion Table: mmHg to Torr\">Conversion Table: mmHg to Torr<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.tipwho.com\/article\/639-mmhg-to-torr-pressure-conversion-calculator\/#242_mmHg_to_atm\" title=\"242 mmHg to atm\">242 mmHg to atm<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.tipwho.com\/article\/639-mmhg-to-torr-pressure-conversion-calculator\/#667_atm_to_kPa\" title=\"6.67 atm to kPa\">6.67 atm to kPa<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.tipwho.com\/article\/639-mmhg-to-torr-pressure-conversion-calculator\/#87_atm_to_Pa\" title=\"8.7 atm to Pa\">8.7 atm to Pa<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.tipwho.com\/article\/639-mmhg-to-torr-pressure-conversion-calculator\/#Frequently_Asked_Questions_About_Millimeters_of_Mercury_to_Torr\" title=\"Frequently Asked Questions About\u00a0Millimeters of Mercury\u00a0to\u00a0Torr\">Frequently Asked Questions About\u00a0Millimeters of Mercury\u00a0to\u00a0Torr<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<p>Do you need to convert 639 mmHg to Torr? We have the solution! 639 mmHg equals 639 Torr, which is the same as saying 639 millimeters of mercury equals 639 torr.<\/p>\n<p>What if you don&#8217;t have precisely 639\u00a0mmHg? We know that 639\u00a0millimeters of mercury\u00a0equal 639\u00a0torr, but how do you\u00a0convert\u00a0mmHg\u00a0to\u00a0Torr? That&#8217;s simple! Use our 639\u00a0mmHg\u00a0to\u00a0Torr\u00a0unit\u00a0converter\u00a0to turn your\u00a0millimeters of mercury\u00a0into\u00a0torr, one\u00a0mmHg\u00a0at a time.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"639_mmHg_to_Torr_Converter\"><\/span>639\u00a0mmHg\u00a0to\u00a0Torr\u00a0Converter<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Use our free 639 mmHg to Torr converter to quickly calculate how much your millimeters of mercury are in terms of torr. Just type in how many millimeters of mercury you have, and we will\u00a0<a href=\"https:\/\/www.tipwho.com\/article-category\/converters\/\">convert<\/a>\u00a0it into\u00a0torr\u00a0for you!<\/p>\n<p>You will see that we already entered a value of 639 mmHg, which gives us an answer of 639 Torr. That&#8217;s the answer to convert 639 mmHg to Torr. 639 milliliters of mercury equals 639 torr.<\/p>\n<p>Now it&#8217;s your turn! Just type in how many\u00a0<a href=\"https:\/\/www.tipwho.com\/article-category\/mmhg\/\">mmHg<\/a>\u00a0you have, and our\u00a0mmHg\u00a0to\u00a0Torr\u00a0<a href=\"https:\/\/www.tipwho.com\/article-category\/calculators\/\">calculator<\/a> will tell you how much it is in terms of torr pressure units. Millimeters of mercury to torr conversions are made easy, no matter how many mmHg you have. Whether you have 639 mmHg or\u00a0<a href=\"https:\/\/www.tipwho.com\/article\/1-mmhg-to-torr-pressure-conversion-calculator\/\">1 mmHg<\/a>, we will convert it into torr for you.<\/p>\n<div class=\"uCalc_388649\"><\/div><script> var widgetOptions388649 = { bg_color: \"transparent\" }; (function() { var a = document.createElement(\"script\"), h = \"head\"; a.async = true; a.src = (document.location.protocol == \"https:\" ? \"https:\" : \"http:\") + \"\/\/ucalc.pro\/api\/widget.js?id=388649&t=\"+Math.floor(new Date()\/18e5); document.getElementsByTagName(h)[0].appendChild(a) })();<\/script>\n<h2><span class=\"ez-toc-section\" id=\"mmHg_to_Torr_Conversion_Table\"><\/span>mmHg to Torr Conversion Table<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>We have created a conversion table to help you quickly convert between mmHg and Torr. The first column is the value in mmHg, while the second table is the corresponding value in terms of Torr pressure units. To find your answer, match the value you are searching for in the first column with the corresponding value in the second column.<\/p>\n<h2 id=\"tablepress-760mmhgtotorr-name\" class=\"tablepress-table-name tablepress-table-name-id-760mmhgtotorr\"><span class=\"ez-toc-section\" id=\"Conversion_Table_mmHg_to_Torr\"><\/span>Conversion Table: mmHg to Torr<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<table id=\"tablepress-760mmhgtotorr\" class=\"tablepress tablepress-id-760mmhgtotorr\" aria-labelledby=\"tablepress-760mmhgtotorr-name\" aria-describedby=\"tablepress-760mmhgtotorr-description\">\n<thead>\n<tr class=\"row-1 odd\">\n\t<th class=\"column-1\">mmHg (millimeters of Mercury)<\/th><th class=\"column-2\">torr (Torr)<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-hover\">\n<tr class=\"row-2 even\">\n\t<td class=\"column-1\">1000 mmHg<\/td><td class=\"column-2\">1000 Torr<\/td>\n<\/tr>\n<tr class=\"row-3 odd\">\n\t<td class=\"column-1\">900 mmHg <\/td><td class=\"column-2\">900 Torr<\/td>\n<\/tr>\n<tr class=\"row-4 even\">\n\t<td class=\"column-1\">800 mmHg<\/td><td class=\"column-2\">800 Torr<\/td>\n<\/tr>\n<tr class=\"row-5 odd\">\n\t<td class=\"column-1\">760 mmHg<\/td><td class=\"column-2\">760 Torr<\/td>\n<\/tr>\n<tr class=\"row-6 even\">\n\t<td class=\"column-1\">700 mHg<\/td><td class=\"column-2\">700 Torr<\/td>\n<\/tr>\n<tr class=\"row-7 odd\">\n\t<td class=\"column-1\">652.5 mmHg<\/td><td class=\"column-2\">652.5 Torr<\/td>\n<\/tr>\n<tr class=\"row-8 even\">\n\t<td class=\"column-1\">639 mmHg<\/td><td class=\"column-2\">639 Torr<\/td>\n<\/tr>\n<tr class=\"row-9 odd\">\n\t<td class=\"column-1\">600 mmHg<\/td><td class=\"column-2\">600 Torr<\/td>\n<\/tr>\n<tr class=\"row-10 even\">\n\t<td class=\"column-1\">500 mmHg<\/td><td class=\"column-2\">500 Torr<\/td>\n<\/tr>\n<tr class=\"row-11 odd\">\n\t<td class=\"column-1\">400 mmHg<\/td><td class=\"column-2\">400 Torr<br \/>\n<\/td>\n<\/tr>\n<tr class=\"row-12 even\">\n\t<td class=\"column-1\">300 mmHg<\/td><td class=\"column-2\">300 Torr<\/td>\n<\/tr>\n<tr class=\"row-13 odd\">\n\t<td class=\"column-1\">235 mmHg<\/td><td class=\"column-2\">235 Torr<\/td>\n<\/tr>\n<tr class=\"row-14 even\">\n\t<td class=\"column-1\">200 mmHg<\/td><td class=\"column-2\">200 Torr<\/td>\n<\/tr>\n<tr class=\"row-15 odd\">\n\t<td class=\"column-1\">105.6 mmHg<\/td><td class=\"column-2\">105.6 Torr<\/td>\n<\/tr>\n<tr class=\"row-16 even\">\n\t<td class=\"column-1\">100 mmHg<\/td><td class=\"column-2\">100 Torr<\/td>\n<\/tr>\n<tr class=\"row-17 odd\">\n\t<td class=\"column-1\">50 mmHg<\/td><td class=\"column-2\">50 Torr<\/td>\n<\/tr>\n<tr class=\"row-18 even\">\n\t<td class=\"column-1\">10 mmHg<\/td><td class=\"column-2\">10 Torr<\/td>\n<\/tr>\n<tr class=\"row-19 odd\">\n\t<td class=\"column-1\">9 mmHg<\/td><td class=\"column-2\">9 Torr<\/td>\n<\/tr>\n<tr class=\"row-20 even\">\n\t<td class=\"column-1\">8 mmHg<\/td><td class=\"column-2\">8 Torr<\/td>\n<\/tr>\n<tr class=\"row-21 odd\">\n\t<td class=\"column-1\">7 mmHg<\/td><td class=\"column-2\">7 Torr<\/td>\n<\/tr>\n<tr class=\"row-22 even\">\n\t<td class=\"column-1\">6 mmHg<\/td><td class=\"column-2\">6 Torr<\/td>\n<\/tr>\n<tr class=\"row-23 odd\">\n\t<td class=\"column-1\">5 mmHg<\/td><td class=\"column-2\">5 Torr<\/td>\n<\/tr>\n<tr class=\"row-24 even\">\n\t<td class=\"column-1\">4 mmHg<\/td><td class=\"column-2\">4 Torr<\/td>\n<\/tr>\n<tr class=\"row-25 odd\">\n\t<td class=\"column-1\">3 mmHg<\/td><td class=\"column-2\">3 Torr<\/td>\n<\/tr>\n<tr class=\"row-26 even\">\n\t<td class=\"column-1\">2 mmHg<\/td><td class=\"column-2\">2 Torr<\/td>\n<\/tr>\n<tr class=\"row-27 odd\">\n\t<td class=\"column-1\">1 mmHg<\/td><td class=\"column-2\">1 Torr<\/td>\n<\/tr>\n<tr class=\"row-28 even\">\n\t<td class=\"column-1\">0.5 mmHg<\/td><td class=\"column-2\">0.5 Torr<\/td>\n<\/tr>\n<tr class=\"row-29 odd\">\n\t<td class=\"column-1\">0.239 mmHg<\/td><td class=\"column-2\">0.239 Torr<\/td>\n<\/tr>\n<tr class=\"row-30 even\">\n\t<td class=\"column-1\">0.1 mmHg<\/td><td class=\"column-2\">0.1 Torr<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<span id=\"tablepress-760mmhgtotorr-description\" class=\"tablepress-table-description tablepress-table-description-id-760mmhgtotorr\">mmHg to Torr conversion table<\/span>\n<!-- #tablepress-760mmhgtotorr from cache -->\n<h2><span class=\"ez-toc-section\" id=\"242_mmHg_to_atm\"><\/span>242 mmHg to atm<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>242 mmHg equals 0.318421 atm. To convert millimeters of mercury (mmHg) to atmospheres (atm) yourself, you can use the conversion factor that 1 atmosphere is equivalent to 760 mmHg. To perform the conversion, divide the pressure value in mmHg by this conversion factor.<\/p>\n<p>So to convert 242 mmHg to atm use the following math:<\/p>\n<p>atm = 242 mmHg\/760 mmHg = 0.318421<\/p>\n<p>So, 242 mmHg equals 0.318421 atm.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"667_atm_to_kPa\"><\/span>6.67 atm to kPa<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>6.67 atm equals 675.8378 kPa. To convert from atmospheres (atm) to kilopascals (kPa) yourself, you can use the conversion factor that 1 atm is equal to 101.325 kPa.<\/p>\n<p>Here&#8217;s how you perform the conversion:<\/p>\n<ol>\n<li>Start with the value in atmospheres: 6.67 atm<br \/>\n2. Multiply this value by the conversion factor: 6.67 atm \u00d7 101.325 kPa\/atm<\/li>\n<\/ol>\n<p>Now, calculate the product:<\/p>\n<p>6.67 \u00d7 101.325 = 675.83775 kPa = 675.8378 kPa<\/p>\n<p>Therefore, 6.67 atmospheres is equivalent to 675.8378 kilopascals when rounded to four decimal places.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"87_atm_to_Pa\"><\/span>8.7 atm to Pa<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>8.7 atm equals 881527.5 Pa. To convert from atmospheres (atm) to pascals (Pa) yourself, you can use the conversion factor that 1 atm equals 101325 Pa.<\/p>\n<p>So, to convert 8.7 atm to Pa:<\/p>\n<p>8.7 atm \u00d7 101325 Pa\/atm = 881527.5 Pa<\/p>\n<p>Therefore, 8.7 atmospheres is equivalent to 881527.5 pascals.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_About_Millimeters_of_Mercury_to_Torr\"><\/span>Frequently Asked Questions About\u00a0Millimeters of Mercury\u00a0to\u00a0Torr<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>People often have specific questions about converting from\u00a0mmHg\u00a0to\u00a0Torr. Here are the answers to some of the most common conversions and questions people ask about\u00a0mmHg\u00a0to\u00a0Torr.<\/p>\n<h3>What does\u00a0mmHg\u00a0stand for?<\/h3>\n<p>An\u00a0mmHg\u00a0is a unit of pressure equal to the pressure exerted by a\u00a0column of mercury\u00a0that is one millimeter high under\u00a0standard gravity. It is a\u00a0manometric unit of pressure\u00a0and is an abbreviation for\u00a0millimeters of mercury. You will most frequently encounter the\u00a0mmHg\u00a0pressure measurement\u00a0in blood pressure readings and a meteorologist&#8217;s weather reports in everyday life.<\/p>\n<p>Over time, 760\u00a0mmHg\u00a0became the preferred unit of measure for\u00a0standard atmospheric pressure. The\u00a0torr, while still used, is not as well known as\u00a0millimeters of mercury.<\/p>\n<h3>What is\u00a0Torr?<\/h3>\n<p>Torr\u00a0is a unit of pressure based on an\u00a0absolute scale. It is defined as 1\/760 of a standard atmosphere, which is equivalent to 133.32 Pascals (Pa). The unit is named in\u00a0honor of the inventor of the barometer,\u00a0Evangelista Torricelli, who was an\u00a0Italian physicist\u00a0and\u00a0mathematician. He discovered the\u00a0principle of the barometer\u00a0in 1644, and the rest is, as we say, a\u00a0torr.<\/p>\n<p>The abbreviation for torr is Torr, while the unit name is entirely in lowercase (torr).<\/p>\n<p>The\u00a0torr\u00a0is not\u00a0part of the International System of Units\u00a0(SI Units).<\/p>\n<h3>How do you\u00a0convert\u00a0mmHg\u00a0to\u00a0Torr?<\/h3>\n<p>To\u00a0convert\u00a0millimeters of mercury\u00a0(mmHg) to\u00a0torr\u00a0(Torr), multiply\u00a0mmHg\u00a0by 0.999999857533699. The answer resulting from this\u00a0multiplication\u00a0will be in terms of\u00a0torr (Torr).<\/p>\n<p>As an exercise, suppose we want to\u00a0convert\u00a01\u00a0mmHg\u00a0to\u00a0Torr. In this\u00a0calculation example, we multiply 1\u00a0mmHg\u00a0by the conversion factor\u00a00.999999857533699, which equals\u00a00.999999857533699\u00a0Torr.<\/p>\n<p>On the other hand, if you need to convert from torr to mmHg, multiply your Torr value by the conversion factor 1.000000142466321 to solve for mmHg.<\/p>\n<h3>Is\u00a0torr\u00a0the same thing as\u00a0mmHg?<\/h3>\n<p>No,\u00a0a Torr\u00a0is slightly different from\u00a0mmHg. 1\u00a0Torr\u00a0is equal to 0.999999857533699\u00a0mmHg. In the past, one\u00a0mmHg\u00a0was equal to one\u00a0torr, but this changed in 1954 at the 10e Conf\u00e9rence G\u00e9n\u00e9rale des Poids et Mesures (10th General Conference on Weights and Measures). Today, the difference between the two units is 0.000015%. This change was made because the pressure of mercury depends on both gravity and temperature.<\/p>\n<p>While the\u00a0Torr\u00a0and\u00a0mmHg\u00a0are not precisely the same, they are often treated as an\u00a0equivalent unit\u00a0of pressure.<\/p>\n<h3>How many\u00a0torr\u00a0are in\u00a0mmHg?<\/h3>\n<p>There are 1.000000142466321\u00a0Torr\u00a0in one\u00a0mmHg. While\u00a0Torr\u00a0and\u00a0mmHg\u00a0are nearly equivalent, there is a\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Torr#:~:text=than%200.000015%25).%20\">difference of 0.000015%<\/a>. While this is a\u00a0slight difference, you should account for calculations and conversions requiring precision.<\/p>\n<h3>What units make up a\u00a0torr?<\/h3>\n<p>Torr\u00a0units can be used with prefixes to denote smaller values. In descending order, the different units of\u00a0torr\u00a0are\u00a0torr\u00a0(Torr), centitorr (cTorr),\u00a0millitorr\u00a0(mTorr), microtorr (uTorr), nanotorr (nTorr), picotorr (pTorr), femtotorr (fTorr), attotorr (aTorr), zeptotorr (zTorr), and yactotorr (yTorr).<\/p>\n<h3>What is the SI unit of torr?<\/h3>\n<p>The SI unit of pressure is the Pascal, which is defined as one Newton per square meter (N\/m2). There are 0.0075006 torr in one Pascal.<\/p>\n<h3>Is blood pressure measured in\u00a0torr?<\/h3>\n<p>Blood pressure is measured in millimeters of mercury (mm Hg) or kilopascals (kPa). Torr, which is a non-SI unit of pressure, is not used to measure blood pressure.<\/p>\n<h3>Is\u00a0psi\u00a0the same as\u00a0Torr?<\/h3>\n<p>No,\u00a0pounds per square inch (psi)\u00a0is not the same as\u00a0torr (Torr). There are 51.7149325716\u00a0Torr\u00a0in 1\u00a0psi.<\/p>\n<h3>Can you have a negative\u00a0torr?<\/h3>\n<p>You cannot have negative\u00a0torr\u00a0because you cannot have negative pressure. Pressure is always equal to or greater than zero. Zero pressure is a perfect vacuum, while we say low pressures are equal to a high vacuum.<\/p>\n<h3>What is the relationship between torr and atm?<\/h3>\n<p>One torr (Torr) equals 1\/760 of a standard atmosphere (atm). Put differently, a standard atmosphere (atm) is 760 times larger than one torr.<\/p>\n<h3>How many sig figs are in 760 torr?<\/h3>\n<p>There are two significant figures (sig figs) in 760 torr. The &#8216;7&#8217; and the &#8216;6&#8217; are sig figs, while the &#8216;0&#8217; is not. Trailing zeroes are not significant figures.<\/p>\n<h3>Why is pressure measured in\u00a0mmHg?<\/h3>\n<p>Historically, pressures were measured in\u00a0millimeters\u00a0of mercury (mmHg) because mercury is the densest liquid at room temperature. A dense liquid is helpful for pressure column applications because it minimizes the height needed for a column. A pressure column, also called a manometer, is often used in laboratory, medicine, meteorology, and aviation settings. As a result, there are limits to how high a pressure column can be. Since the density is correlated with the height of a pressure column, the density of the liquid used in a manometer is an important practical consideration.<\/p>\n<p>For example, to measure one standard atmosphere of pressure (atm), you only need a column that is 760 mm tall (0.76 meters) if you use mercury as the liquid. On the other hand, if you use a less dense liquid, the required height of the column is greater. In the case of water, you would need a column that is 10 meters high to measure one standard atmosphere!<\/p>\n<h3>Why do we use torr?<\/h3>\n<p>The torr unit is primarily encountered when measuring high vacuum pressures and in pressure calculation questions. The torr is convenient for measuring vacuum pressures because of its relationship to atmospheric pressure. One torr is defined as one standard atmosphere. Partial pressure questions typically involve a mixture of Oxygen, Nitrogen, and Helium gas plus a change in temperature or volume.<\/p>\n<p>That said, the torr is declining in popularity in favor of the millibar (mbar) for vacuum pressure measurements. The millibar is also known as the hectopascal (hPa).<\/p>\n<h3>What are the different units of pressure?<\/h3>\n<p>Commonly used units of pressure include:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Megapascals\u00a0(MPa)<\/li>\n<li>kilopascals\u00a0(kPa)<\/li>\n<li>Pascals\u00a0(Pa)<\/li>\n<li>standard atmospheres (atm)<\/li>\n<li><a href=\"https:\/\/www.tipwho.com\/article-category\/torr\/\">torr\u00a0(Torr)<\/a><\/li>\n<li><a href=\"https:\/\/www.tipwho.com\/article\/25-psi-to-kpa-answer-free-conversion-calculator\/\">pounds per\u00a0square inch\u00a0(psi)<\/a><\/li>\n<li>pounds per\u00a0square foot\u00a0(psf)<\/li>\n<li>bar<\/li>\n<li>millibar (mbar)<\/li>\n<li><a href=\"https:\/\/www.tipwho.com\/article-category\/mmhg\/\">millimeters of mercury\u00a0(mmHg)<\/a>, historically measured using a column of mercury.<\/li>\n<li>inches of\u00a0mercury\u00a0(inHg)<\/li>\n<li>dyne\u00a0(dyn)<\/li>\n<li>kilopond per\u00a0square centimeter\u00a0(kp\/cm2)<\/li>\n<li>kilogram-force\u00a0per square\u00a0millimeter\u00a0(kgf\/mm2)<\/li>\n<li>kilonewton\u00a0per\u00a0square meter\u00a0(kN\/m2)<\/li>\n<li>newton\u00a0per\u00a0square meter\u00a0(N\/m2)<\/li>\n<\/ul>\n<div class=\"custom-related-posts\">\n<p><strong>Related posts:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/www.tipwho.com\/article\/760-mmhg-to-torr-pressure-conversion-calculator\/\">760 mmhg to Torr (Pressure Conversion Calculator)<\/a><\/li>\n<li><a href=\"https:\/\/www.tipwho.com\/article\/652-5-mmhg-to-torr-pressure-conversion-calculator\/\">652.5 mmHg to Torr (Pressure Conversion Calculator)<\/a><\/li>\n<li><a href=\"https:\/\/www.tipwho.com\/article\/convert-641-mmhg-to-atm-pressure-conversion-calculator\/\">Convert 641 mmHg to atm (Pressure Conversion Calculator)<\/a><\/li>\n<li><a href=\"https:\/\/www.tipwho.com\/article\/convert-635-mmhg-to-atm-millimeters-of-mercury-conversion\/\">Convert 635 mmhg to atm (Millimeters of Mercury Conversion)<\/a><\/li>\n<li><a href=\"https:\/\/www.tipwho.com\/article\/235-mmhg-to-torr-pressure-conversion-calculator\/\">235 mmhg to Torr (Pressure Conversion Calculator)<\/a><\/li>\n<\/ul>\n<\/div>\n<\/li>\n<\/ul>\n","protected":false},"featured_media":23292,"template":"","article-category":[4184,1882,5569,1883,5588,5589],"article-tag":[17166,17165,5584,2388,5566,5580,5572,5581,5563,3573,5579,5571,5582,5575,5562,5586,5577,2455,5565,5549,5585,5559,5548,5587,5578,5551,5583,5560,5555,5534,5573,5576,5574,5553],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.3 (Yoast SEO v22.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>639 mmHg to Torr (Pressure Conversion Calculator)<\/title>\n<meta name=\"description\" content=\"Need to convert 639 mmHg to Torr? 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