• psi   mH₂O
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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?

A “meter of water @ 4°C” is a unique unit used primarily to measure pressure. At this specific temperature, water reaches its maximum density, and the pressure exerted by a one-meter column of water is approximately 9.81 kilopascals or 0.0979 atmospheres. This scenario represents the optimal conditions for standardizing pressure measurements because the physical properties of water are most stable, reducing variances in calculations.

This unit is especially important in fields like plumbing and hydraulics, where accurate pressure measurements are crucial. Understanding these principles can lead to better designs in water distribution systems, preventing common issues such as pipe bursts or inefficient water flow, ensuring systems operate safely and efficiently.

> Pounds per inch² to Meters of water @ 4°C Conversion Table

Pounds per square inch Meters of water @ 4°C
0 psi 0 mH₂O
10 psi 7.0307 mH₂O
20 psi 14.0614 mH₂O
30 psi 21.0921 mH₂O
40 psi 28.12279 mH₂O
50 psi 35.15349 mH₂O
60 psi 42.18419 mH₂O
70 psi 49.21489 mH₂O
80 psi 56.24559 mH₂O
90 psi 63.27629 mH₂O
100 psi 70.30699 mH₂O
110 psi 77.33768 mH₂O
120 psi 84.36838 mH₂O
130 psi 91.39908 mH₂O
140 psi 98.42978 mH₂O
150 psi 105.46048 mH₂O
160 psi 112.49118 mH₂O
170 psi 119.52188 mH₂O
180 psi 126.55257 mH₂O
190 psi 133.58327 mH₂O
200 psi 140.61397 mH₂O
210 psi 147.64467 mH₂O
220 psi 154.67537 mH₂O
230 psi 161.70607 mH₂O
240 psi 168.73677 mH₂O
250 psi 175.76746 mH₂O
260 psi 182.79816 mH₂O
270 psi 189.82886 mH₂O
280 psi 196.85956 mH₂O
290 psi 203.89026 mH₂O
300 psi 210.92096 mH₂O
310 psi 217.95166 mH₂O
320 psi 224.98235 mH₂O
330 psi 232.01305 mH₂O
340 psi 239.04375 mH₂O
350 psi 246.07445 mH₂O
360 psi 253.10515 mH₂O
370 psi 260.13585 mH₂O
380 psi 267.16655 mH₂O
390 psi 274.19724 mH₂O
400 psi 281.22794 mH₂O
410 psi 288.25864 mH₂O
420 psi 295.28934 mH₂O
430 psi 302.32004 mH₂O
440 psi 309.35074 mH₂O
450 psi 316.38144 mH₂O
460 psi 323.41213 mH₂O
470 psi 330.44283 mH₂O
480 psi 337.47353 mH₂O
490 psi 344.50423 mH₂O
500 psi 351.53493 mH₂O
510 psi 358.56563 mH₂O
520 psi 365.59632 mH₂O
530 psi 372.62702 mH₂O
540 psi 379.65772 mH₂O
550 psi 386.68842 mH₂O
560 psi 393.71912 mH₂O
570 psi 400.74982 mH₂O
580 psi 407.78052 mH₂O
590 psi 414.81121 mH₂O
600 psi 421.84191 mH₂O
610 psi 428.87261 mH₂O
620 psi 435.90331 mH₂O
630 psi 442.93401 mH₂O
640 psi 449.96471 mH₂O
650 psi 456.99541 mH₂O
660 psi 464.0261 mH₂O
670 psi 471.0568 mH₂O
680 psi 478.0875 mH₂O
690 psi 485.1182 mH₂O
700 psi 492.1489 mH₂O
710 psi 499.1796 mH₂O
720 psi 506.2103 mH₂O
730 psi 513.24099 mH₂O
740 psi 520.27169 mH₂O
750 psi 527.30239 mH₂O
760 psi 534.33309 mH₂O
770 psi 541.36379 mH₂O
780 psi 548.39449 mH₂O
790 psi 555.42519 mH₂O
800 psi 562.45588 mH₂O
810 psi 569.48658 mH₂O
820 psi 576.51728 mH₂O
830 psi 583.54798 mH₂O
840 psi 590.57868 mH₂O
850 psi 597.60938 mH₂O
860 psi 604.64008 mH₂O
870 psi 611.67077 mH₂O
880 psi 618.70147 mH₂O
890 psi 625.73217 mH₂O
900 psi 632.76287 mH₂O
910 psi 639.79357 mH₂O
920 psi 646.82427 mH₂O
930 psi 653.85497 mH₂O
940 psi 660.88566 mH₂O
950 psi 667.91636 mH₂O
960 psi 674.94706 mH₂O
970 psi 681.97776 mH₂O
980 psi 689.00846 mH₂O
990 psi 696.03916 mH₂O
1000 psi 703.06986 mH₂O