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 |
nanopascal | 98 063 800 000 nPa | 196 127 600 000 nPa | 294 191 400 000 nPa | 392 255 200 000 nPa | 490 319 000 000 nPa | 588 382 800 000 nPa | 686 446 600 000 nPa | 784 510 400 000 nPa | 882 574 200 000 nPa | 980 638 000 000 nPa | 1 078 701 800 000 nPa | 1 176 765 600 000 nPa | 1 274 829 400 000 nPa | 1 372 893 200 000 nPa | 1 470 957 000 000 nPa | 1 569 020 800 000 nPa | 1 667 084 600 000 nPa | 1 765 148 400 000 nPa | 1 863 212 200 000 nPa | 1 961 276 000 000 nPa | 2 059 339 800 000 nPa | 2 157 403 600 000 nPa | 2 255 467 400 000 nPa | 2 353 531 200 000 nPa | 2 451 595 000 000 nPa | 2 549 658 800 000 nPa | 2 647 722 600 000 nPa | 2 745 786 400 000 nPa | 2 843 850 200 000 nPa | 2 941 914 000 000 nPa | 3 039 977 800 000 nPa | 3 138 041 600 000 nPa | 3 236 105 400 000 nPa | 3 334 169 200 000 nPa | 3 432 233 000 000 nPa | 3 530 296 800 000 nPa | 3 628 360 600 000 nPa | 3 726 424 400 000 nPa | 3 824 488 200 000 nPa | 3 922 552 000 000 nPa | 4 020 615 800 000 nPa | 4 118 679 600 000 nPa | 4 216 743 400 000 nPa | 4 314 807 200 000 nPa | 4 412 871 000 000 nPa | 4 510 934 800 000 nPa | 4 608 998 600 000 nPa | 4 707 062 400 000 nPa | 4 805 126 200 000 nPa | 4 903 190 000 000 nPa | 5 001 253 800 000 nPa | 5 099 317 600 000 nPa | 5 197 381 400 000 nPa | 5 295 445 200 000 nPa | 5 393 509 000 000 nPa | 5 491 572 800 000 nPa | 5 589 636 600 000 nPa | 5 687 700 400 000 nPa | 5 785 764 200 000 nPa | 5 883 828 000 000 nPa | 5 981 891 800 000 nPa | 6 079 955 600 000 nPa | 6 178 019 400 000 nPa | 6 276 083 200 000 nPa | 6 374 147 000 000 nPa | 6 472 210 800 000 nPa | 6 570 274 600 000 nPa | 6 668 338 400 000 nPa | 6 766 402 200 000 nPa | 6 864 466 000 000 nPa | 6 962 529 800 000 nPa | 7 060 593 600 000 nPa | 7 158 657 400 000 nPa | 7 256 721 200 000 nPa | 7 354 785 000 000 nPa | 7 452 848 800 000 nPa | 7 550 912 600 000 nPa | 7 648 976 400 000 nPa | 7 747 040 200 000 nPa | 7 845 104 000 000 nPa | 7 943 167 800 000 nPa | 8 041 231 600 000 nPa | 8 139 295 400 000 nPa | 8 237 359 200 000 nPa | 8 335 423 000 000 nPa | 8 433 486 800 000 nPa | 8 531 550 600 000 nPa | 8 629 614 400 000 nPa | 8 727 678 200 000 nPa | 8 825 742 000 000 nPa | 8 923 805 800 000 nPa | 9 021 869 600 000 nPa | 9 119 933 400 000 nPa | 9 217 997 200 000 nPa | 9 316 061 000 000 nPa | 9 414 124 800 000 nPa | 9 512 188 600 000 nPa | 9 610 252 400 000 nPa | 9 708 316 200 000 nPa | 9 806 380 000 000 nPa |
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) | nanopascals | centimeter of water (4 °C) | nanopascals |
---|---|---|---|
1 | ≈ 98063800000 | 6 | ≈ 588382800000 |
2 | ≈ 196127600000 | 7 | ≈ 686446600000 |
3 | ≈ 294191400000 | 8 | ≈ 784510400000 |
4 | ≈ 392255200000 | 9 | ≈ 882574200000 |
5 | ≈ 490319000000 | 10 | ≈ 980638000000 |
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
nanopascal | nPa | = 1.0 × 10-9 pascals | = 0.000000001 pascals | Metric system SI |
nanopascals | centimeter of water (4 °C) | nanopascals | centimeter of water (4 °C) |
---|---|---|---|
1 | ≈ 1.0197442889221E-11 | 6 | ≈ 6.1184657335327E-11 |
2 | ≈ 2.0394885778442E-11 | 7 | ≈ 7.1382100224548E-11 |
3 | ≈ 3.0592328667663E-11 | 8 | ≈ 8.1579543113769E-11 |
4 | ≈ 4.0789771556884E-11 | 9 | ≈ 9.177698600299E-11 |
5 | ≈ 5.0987214446105E-11 | 10 | ≈ 1.0197442889221E-10 |
centimeter of water (4 °C) | nanopascals |
---|---|
1 | ≈ 98 063 800 000 |
1.0197442889221 × 10-11 | ≈ 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 …) |