• psi   mmHg
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Rounding Mode:

Pounds per square inch (psi) is a crucial unit of pressure measurement, widely used across various industries, including automotive, aviation, and even space exploration. One interesting fact is that a typical car tire is inflated to around 30 psi, but did you know that a commercial jetliner’s cabin is pressurized to a reduced level of 11 psi to simulate being at a comfortable altitude of about 6,000-8,000 feet? This helps passengers avoid the stress of low oxygen levels while flying at over 35,000 feet, where the atmospheric pressure is a meager 4 psi.

Moreover, psi is pivotal in assessing the force exerted on surfaces. If you’ve ever wondered why deep-sea submarines have thick hulls, it’s because they must withstand pressures of around 8,800 psi at depths of 6 miles beneath the ocean’s surface! This ensures safe exploration of the mysterious deep-sea world, showcasing psi’s significance in enabling human feats in extreme environments.

Did you know?

The millimeter of mercury (mmHg) is a unit of pressure traditionally used in medicine and meteorology, and its history dates back to the barometer invention by Evangelista Torricelli in 1643. Often, it is associated with measuring blood pressure and intraocular pressure, representing the pressure exerted by a column of mercury precisely 1 millimeter high. This fascinating unit highlights the interplay of physics and medicine, reflecting both the force of blood circulating against vessel walls and the atmospheric pressure’s effects on our weather systems.

Interestingly, mmHg is one of the few units still officially sanctioned for use with SI (International System of Units) under specific legal and medical contexts, underscoring its importance over centuries. Despite the global shift towards using Pascals for pressure, mmHg remains ingrained in clinical settings because of its historical usage and direct relation to human physiology. Its origins and continued use illustrate how historical scientific instruments still influence modern practices.

> Pounds per inch² to Millimeters of mercury Conversion Table

Pounds per square inch Millimeters of mercury
0 psi 0 mmHg
10 psi 517.15096 mmHg
20 psi 1034.30192 mmHg
30 psi 1551.45287 mmHg
40 psi 2068.60383 mmHg
50 psi 2585.75479 mmHg
60 psi 3102.90575 mmHg
70 psi 3620.05671 mmHg
80 psi 4137.20766 mmHg
90 psi 4654.35862 mmHg
100 psi 5171.50958 mmHg
110 psi 5688.66054 mmHg
120 psi 6205.81149 mmHg
130 psi 6722.96245 mmHg
140 psi 7240.11341 mmHg
150 psi 7757.26437 mmHg
160 psi 8274.41533 mmHg
170 psi 8791.56628 mmHg
180 psi 9308.71724 mmHg
190 psi 9825.8682 mmHg
200 psi 10343.01916 mmHg
210 psi 10860.17012 mmHg
220 psi 11377.32107 mmHg
230 psi 11894.47203 mmHg
240 psi 12411.62299 mmHg
250 psi 12928.77395 mmHg
260 psi 13445.9249 mmHg
270 psi 13963.07586 mmHg
280 psi 14480.22682 mmHg
290 psi 14997.37778 mmHg
300 psi 15514.52874 mmHg
310 psi 16031.67969 mmHg
320 psi 16548.83065 mmHg
330 psi 17065.98161 mmHg
340 psi 17583.13257 mmHg
350 psi 18100.28353 mmHg
360 psi 18617.43448 mmHg
370 psi 19134.58544 mmHg
380 psi 19651.7364 mmHg
390 psi 20168.88736 mmHg
400 psi 20686.03831 mmHg
410 psi 21203.18927 mmHg
420 psi 21720.34023 mmHg
430 psi 22237.49119 mmHg
440 psi 22754.64215 mmHg
450 psi 23271.7931 mmHg
460 psi 23788.94406 mmHg
470 psi 24306.09502 mmHg
480 psi 24823.24598 mmHg
490 psi 25340.39694 mmHg
500 psi 25857.54789 mmHg
510 psi 26374.69885 mmHg
520 psi 26891.84981 mmHg
530 psi 27409.00077 mmHg
540 psi 27926.15172 mmHg
550 psi 28443.30268 mmHg
560 psi 28960.45364 mmHg
570 psi 29477.6046 mmHg
580 psi 29994.75556 mmHg
590 psi 30511.90651 mmHg
600 psi 31029.05747 mmHg
610 psi 31546.20843 mmHg
620 psi 32063.35939 mmHg
630 psi 32580.51035 mmHg
640 psi 33097.6613 mmHg
650 psi 33614.81226 mmHg
660 psi 34131.96322 mmHg
670 psi 34649.11418 mmHg
680 psi 35166.26513 mmHg
690 psi 35683.41609 mmHg
700 psi 36200.56705 mmHg
710 psi 36717.71801 mmHg
720 psi 37234.86897 mmHg
730 psi 37752.01992 mmHg
740 psi 38269.17088 mmHg
750 psi 38786.32184 mmHg
760 psi 39303.4728 mmHg
770 psi 39820.62376 mmHg
780 psi 40337.77471 mmHg
790 psi 40854.92567 mmHg
800 psi 41372.07663 mmHg
810 psi 41889.22759 mmHg
820 psi 42406.37854 mmHg
830 psi 42923.5295 mmHg
840 psi 43440.68046 mmHg
850 psi 43957.83142 mmHg
860 psi 44474.98238 mmHg
870 psi 44992.13333 mmHg
880 psi 45509.28429 mmHg
890 psi 46026.43525 mmHg
900 psi 46543.58621 mmHg
910 psi 47060.73717 mmHg
920 psi 47577.88812 mmHg
930 psi 48095.03908 mmHg
940 psi 48612.19004 mmHg
950 psi 49129.341 mmHg
960 psi 49646.49196 mmHg
970 psi 50163.64291 mmHg
980 psi 50680.79387 mmHg
990 psi 51197.94483 mmHg
1000 psi 51715.09579 mmHg