centimeter of water (4 °C) | 1 cmH2O | 2 cmH2O | 3 cmH2O | 4 cmH2O | 5 cmH2O | 6 cmH2O | 7 cmH2O | 8 cmH2O | 9 cmH2O | 10 cmH2O | 11 cmH2O | 12 cmH2O | 13 cmH2O | 14 cmH2O | 15 cmH2O | 16 cmH2O | 17 cmH2O | 18 cmH2O | 19 cmH2O | 20 cmH2O | 21 cmH2O | 22 cmH2O | 23 cmH2O | 24 cmH2O | 25 cmH2O | 26 cmH2O | 27 cmH2O | 28 cmH2O | 29 cmH2O | 30 cmH2O | 31 cmH2O | 32 cmH2O | 33 cmH2O | 34 cmH2O | 35 cmH2O | 36 cmH2O | 37 cmH2O | 38 cmH2O | 39 cmH2O | 40 cmH2O | 41 cmH2O | 42 cmH2O | 43 cmH2O | 44 cmH2O | 45 cmH2O | 46 cmH2O | 47 cmH2O | 48 cmH2O | 49 cmH2O | 50 cmH2O | 51 cmH2O | 52 cmH2O | 53 cmH2O | 54 cmH2O | 55 cmH2O | 56 cmH2O | 57 cmH2O | 58 cmH2O | 59 cmH2O | 60 cmH2O | 61 cmH2O | 62 cmH2O | 63 cmH2O | 64 cmH2O | 65 cmH2O | 66 cmH2O | 67 cmH2O | 68 cmH2O | 69 cmH2O | 70 cmH2O | 71 cmH2O | 72 cmH2O | 73 cmH2O | 74 cmH2O | 75 cmH2O | 76 cmH2O | 77 cmH2O | 78 cmH2O | 79 cmH2O | 80 cmH2O | 81 cmH2O | 82 cmH2O | 83 cmH2O | 84 cmH2O | 85 cmH2O | 86 cmH2O | 87 cmH2O | 88 cmH2O | 89 cmH2O | 90 cmH2O | 91 cmH2O | 92 cmH2O | 93 cmH2O | 94 cmH2O | 95 cmH2O | 96 cmH2O | 97 cmH2O | 98 cmH2O | 99 cmH2O | 100 cmH2O |
centimeter of mercury | 0.0735541 cmHg | 0.1471082 cmHg | 0.2206623 cmHg | 0.2942164 cmHg | 0.3677705 cmHg | 0.4413246 cmHg | 0.5148787 cmHg | 0.5884328 cmHg | 0.6619869 cmHg | 0.7355410 cmHg | 0.8090951 cmHg | 0.8826492 cmHg | 0.9562033 cmHg | 1.0297574 cmHg | 1.1033115 cmHg | 1.1768656 cmHg | 1.2504197 cmHg | 1.3239738 cmHg | 1.3975279 cmHg | 1.4710820 cmHg | 1.5446361 cmHg | 1.6181902 cmHg | 1.6917443 cmHg | 1.7652985 cmHg | 1.8388526 cmHg | 1.9124067 cmHg | 1.9859608 cmHg | 2.0595149 cmHg | 2.1330690 cmHg | 2.2066231 cmHg | 2.2801772 cmHg | 2.3537313 cmHg | 2.4272854 cmHg | 2.5008395 cmHg | 2.5743936 cmHg | 2.6479477 cmHg | 2.7215018 cmHg | 2.7950559 cmHg | 2.8686100 cmHg | 2.9421641 cmHg | 3.0157182 cmHg | 3.0892723 cmHg | 3.1628264 cmHg | 3.2363805 cmHg | 3.3099346 cmHg | 3.3834887 cmHg | 3.4570428 cmHg | 3.5305969 cmHg | 3.6041510 cmHg | 3.6777051 cmHg | 3.7512592 cmHg | 3.8248133 cmHg | 3.8983674 cmHg | 3.9719215 cmHg | 4.0454756 cmHg | 4.1190297 cmHg | 4.1925838 cmHg | 4.2661379 cmHg | 4.3396920 cmHg | 4.4132461 cmHg | 4.4868002 cmHg | 4.5603543 cmHg | 4.6339084 cmHg | 4.7074625 cmHg | 4.7810166 cmHg | 4.8545707 cmHg | 4.9281248 cmHg | 5.0016789 cmHg | 5.0752330 cmHg | 5.1487871 cmHg | 5.2223412 cmHg | 5.2958954 cmHg | 5.3694495 cmHg | 5.4430036 cmHg | 5.5165577 cmHg | 5.5901118 cmHg | 5.6636659 cmHg | 5.7372200 cmHg | 5.8107741 cmHg | 5.8843282 cmHg | 5.9578823 cmHg | 6.0314364 cmHg | 6.1049905 cmHg | 6.1785446 cmHg | 6.2520987 cmHg | 6.3256528 cmHg | 6.3992069 cmHg | 6.4727610 cmHg | 6.5463151 cmHg | 6.6198692 cmHg | 6.6934233 cmHg | 6.7669774 cmHg | 6.8405315 cmHg | 6.9140856 cmHg | 6.9876397 cmHg | 7.0611938 cmHg | 7.1347479 cmHg | 7.2083020 cmHg | 7.2818561 cmHg | 7.3554102 cmHg |
A centimetre of water (US spelling centimeter of water, abbreviated cm H2O or cm H2O) is a less commonly used unit of pressure derived from pressure head calculations using metrology.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
centimeter of water (4 °C) | cmH2O | ≈ 999.972 kg/m3 × 1 cm × ɡ0 | ≈ 98.0638 Pa | Metric system SI |
centimeter of water (4 °C) | centimeter of mercury | centimeter of water (4 °C) | centimeter of mercury |
---|---|---|---|
1 | ≈ 0.073554102098678 | 6 | ≈ 0.44132461259207 |
2 | ≈ 0.14710820419736 | 7 | ≈ 0.51487871469075 |
3 | ≈ 0.22066230629604 | 8 | ≈ 0.58843281678943 |
4 | ≈ 0.29421640839471 | 9 | ≈ 0.66198691888811 |
5 | ≈ 0.36777051049339 | 10 | ≈ 0.73554102098678 |
A centimetre of mercury is the unit of pressure.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
centimeter of mercury | cmHg | ≡ 13595.1 kg/m3 × 1 cm × ɡ0 | ≈ 1.33322×103 Pa | Metric system SI |
centimeter of mercury | centimeter of water (4 °C) | centimeter of mercury | centimeter of water (4 °C) |
---|---|---|---|
1 | ≈ 13.595434808767 | 6 | ≈ 81.572608852604 |
2 | ≈ 27.190869617535 | 7 | ≈ 95.168043661371 |
3 | ≈ 40.786304426302 | 8 | ≈ 108.76347847014 |
4 | ≈ 54.381739235069 | 9 | ≈ 122.35891327891 |
5 | ≈ 67.977174043837 | 10 | ≈ 135.95434808767 |
centimeter of water (4 °C) | centimeter of mercury |
---|---|
1 | ≈ 0.0735541 |
13.5954348 | ≈ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |