Look up a low pressure in inches of water column to find the conversion value in millimetres of water, millibar, pounds per square inch or millimetres of mercury.
Alternatively you can use the pressure unit converter to calculate the equivalent inches of water gauge value in other units.
The mmHg pressure units shown below are for mercury at 0°C, (32°F). The inH2O and mmH2O pressure units shown below are for water at 4°C (39.2°F).
inH2O low range pressure measurement products
- 3inH2O differential 4-20mA nitrogen pressure sensor and display for annealing furnace flow control use
- 1.5 inWG differential pressure transducer to control positive pressure inside a building
- Low range vacuum pressure logger for 0 to -60 inH2O g
- Wet wet DP sensor for 10 inches of water range
inH2O Conversion Table
inH2O | mmH2O | mbar | psi | mmHg |
---|---|---|---|---|
0.1 | 2.54 | 0.249 | 0.004 | 0.187 |
0.2 | 5.08 | 0.498 | 0.007 | 0.374 |
0.3 | 7.62 | 0.747 | 0.011 | 0.560 |
0.4 | 10.16 | 0.996 | 0.014 | 0.747 |
0.5 | 12.70 | 1.245 | 0.018 | 0.934 |
0.6 | 15.24 | 1.495 | 0.022 | 1.121 |
0.7 | 17.78 | 1.744 | 0.025 | 1.308 |
0.8 | 20.32 | 1.993 | 0.029 | 1.495 |
0.9 | 22.86 | 2.242 | 0.033 | 1.681 |
1 | 25.40 | 2.491 | 0.036 | 1.868 |
2 | 50.80 | 4.982 | 0.072 | 3.737 |
3 | 76.20 | 7.473 | 0.108 | 5.605 |
4 | 101.6 | 9.964 | 0.145 | 7.473 |
5 | 127.0 | 12.45 | 0.181 | 9.342 |
6 | 152.4 | 14.95 | 0.217 | 11.21 |
7 | 177.8 | 17.44 | 0.253 | 13.08 |
8 | 203.2 | 19.93 | 0.289 | 14.95 |
9 | 228.6 | 22.42 | 0.325 | 16.81 |
10 | 254.0 | 24.91 | 0.361 | 18.68 |
11 | 279.4 | 27.40 | 0.397 | 20.55 |
12 | 304.8 | 29.89 | 0.434 | 22.42 |
13 | 330.2 | 32.38 | 0.470 | 24.29 |
14 | 355.6 | 34.87 | 0.506 | 26.16 |
15 | 381.0 | 37.36 | 0.542 | 28.02 |
16 | 406.4 | 39.85 | 0.578 | 29.89 |
17 | 431.8 | 42.35 | 0.614 | 31.76 |
18 | 457.2 | 44.84 | 0.650 | 33.63 |
19 | 482.6 | 47.33 | 0.686 | 35.50 |
20 | 508.0 | 49.82 | 0.723 | 37.37 |
21 | 533.4 | 52.31 | 0.759 | 39.23 |
22 | 558.8 | 54.80 | 0.795 | 41.10 |
23 | 584.2 | 57.29 | 0.831 | 42.97 |
24 | 609.6 | 59.78 | 0.867 | 44.84 |
25 | 635.0 | 62.27 | 0.903 | 46.71 |
26 | 660.4 | 64.76 | 0.939 | 48.58 |
27 | 685.8 | 67.25 | 0.975 | 50.44 |
28 | 711.2 | 69.74 | 1.012 | 52.31 |
29 | 736.6 | 72.24 | 1.048 | 54.18 |
30 | 762.0 | 74.73 | 1.084 | 56.05 |
31 | 787.4 | 77.22 | 1.120 | 57.92 |
32 | 812.8 | 79.71 | 1.156 | 59.79 |
33 | 838.2 | 82.20 | 1.192 | 61.65 |
34 | 863.6 | 84.69 | 1.228 | 63.52 |
35 | 889.0 | 87.18 | 1.264 | 65.39 |
36 | 914.4 | 89.67 | 1.301 | 67.26 |
37 | 939.8 | 92.16 | 1.337 | 69.13 |
38 | 965.2 | 94.65 | 1.373 | 71.00 |
39 | 990.6 | 97.14 | 1.409 | 72.86 |
40 | 1016 | 99.64 | 1.445 | 74.73 |
41 | 1041 | 102.1 | 1.481 | 76.60 |
42 | 1067 | 104.6 | 1.517 | 78.47 |
43 | 1092 | 107.1 | 1.553 | 80.34 |
44 | 1118 | 109.6 | 1.590 | 82.21 |
45 | 1143 | 112.1 | 1.626 | 84.07 |
46 | 1168 | 114.6 | 1.662 | 85.94 |
47 | 1194 | 117.1 | 1.698 | 87.81 |
48 | 1219 | 119.6 | 1.734 | 89.68 |
49 | 1245 | 122.1 | 1.770 | 91.55 |
50 | 1270 | 124.5 | 1.806 | 93.42 |
51 | 1295 | 127.0 | 1.842 | 95.28 |
52 | 1321 | 129.5 | 1.879 | 97.15 |
53 | 1346 | 132.0 | 1.915 | 99.02 |
54 | 1372 | 134.5 | 1.951 | 100.9 |
55 | 1397 | 137.0 | 1.987 | 102.8 |
56 | 1422 | 139.5 | 2.023 | 104.6 |
57 | 1448 | 142.0 | 2.059 | 106.5 |
58 | 1473 | 144.5 | 2.095 | 108.4 |
59 | 1499 | 147.0 | 2.132 | 110.2 |
60 | 1524 | 149.5 | 2.168 | 112.1 |
61 | 1549 | 151.9 | 2.204 | 114.0 |
62 | 1575 | 154.4 | 2.240 | 115.8 |
63 | 1600 | 156.9 | 2.276 | 117.7 |
64 | 1626 | 159.4 | 2.312 | 119.6 |
65 | 1651 | 161.9 | 2.348 | 121.4 |
66 | 1676 | 164.4 | 2.384 | 123.3 |
67 | 1702 | 166.9 | 2.421 | 125.2 |
68 | 1727 | 169.4 | 2.457 | 127.0 |
69 | 1753 | 171.9 | 2.493 | 128.9 |
70 | 1778 | 174.4 | 2.529 | 130.8 |
71 | 1803 | 176.9 | 2.565 | 132.7 |
72 | 1829 | 179.3 | 2.601 | 134.5 |
73 | 1854 | 181.8 | 2.637 | 136.4 |
74 | 1880 | 184.3 | 2.673 | 138.3 |
75 | 1905 | 186.8 | 2.710 | 140.1 |
76 | 1930 | 189.3 | 2.746 | 142.0 |
77 | 1956 | 191.8 | 2.782 | 143.9 |
78 | 1981 | 194.3 | 2.818 | 145.7 |
79 | 2007 | 196.8 | 2.854 | 147.6 |
80 | 2032 | 199.3 | 2.890 | 149.5 |
81 | 2057 | 201.8 | 2.926 | 151.3 |
82 | 2083 | 204.3 | 2.962 | 153.2 |
83 | 2108 | 206.7 | 2.999 | 155.1 |
84 | 2134 | 209.2 | 3.035 | 156.9 |
85 | 2159 | 211.7 | 3.071 | 158.8 |
86 | 2184 | 214.2 | 3.107 | 160.7 |
87 | 2210 | 216.7 | 3.143 | 162.5 |
88 | 2235 | 219.2 | 3.179 | 164.4 |
89 | 2261 | 221.7 | 3.215 | 166.3 |
90 | 2286 | 224.2 | 3.251 | 168.1 |
91 | 2311 | 226.7 | 3.288 | 170.0 |
92 | 2337 | 229.2 | 3.324 | 171.9 |
93 | 2362 | 231.7 | 3.360 | 173.8 |
94 | 2388 | 234.1 | 3.396 | 175.6 |
95 | 2413 | 236.6 | 3.432 | 177.5 |
96 | 2438 | 239.1 | 3.468 | 179.4 |
97 | 2464 | 241.6 | 3.504 | 181.2 |
98 | 2489 | 244.1 | 3.540 | 183.1 |
99 | 2515 | 246.6 | 3.577 | 185.0 |
100 | 2540 | 249.1 | 3.613 | 186.8 |
110 | 2794 | 274.0 | 3.974 | 205.5 |
120 | 3048 | 298.9 | 4.335 | 224.2 |
130 | 3302 | 323.8 | 4.697 | 242.9 |
140 | 3556 | 348.7 | 5.058 | 261.6 |
150 | 3810 | 373.6 | 5.419 | 280.2 |
160 | 4064 | 398.5 | 5.780 | 298.9 |
170 | 4318 | 423.5 | 6.142 | 317.6 |
180 | 4572 | 448.4 | 6.503 | 336.3 |
190 | 4826 | 473.3 | 6.864 | 355.0 |
200 | 5080 | 498.2 | 7.225 | 373.7 |
210 | 5334 | 523.1 | 7.587 | 392.3 |
220 | 5588 | 548.0 | 7.948 | 411.0 |
230 | 5842 | 572.9 | 8.309 | 429.7 |
240 | 6096 | 597.8 | 8.671 | 448.4 |
250 | 6350 | 622.7 | 9.032 | 467.1 |
260 | 6604 | 647.6 | 9.393 | 485.8 |
270 | 6858 | 672.5 | 9.754 | 504.4 |
280 | 7112 | 697.4 | 10.12 | 523.1 |
290 | 7366 | 722.4 | 10.48 | 541.8 |
300 | 7620 | 747.3 | 10.84 | 560.5 |
310 | 7874 | 772.2 | 11.20 | 579.2 |
320 | 8128 | 797.1 | 11.56 | 597.9 |
330 | 8382 | 822.0 | 11.92 | 616.5 |
340 | 8636 | 846.9 | 12.28 | 635.2 |
350 | 8890 | 871.8 | 12.64 | 653.9 |
360 | 9144 | 896.7 | 13.01 | 672.6 |
370 | 9398 | 921.6 | 13.37 | 691.3 |
380 | 9652 | 946.5 | 13.73 | 710.0 |
390 | 9906 | 971.4 | 14.09 | 728.6 |
400 | 10160 | 996.4 | 14.45 | 747.3 |
To convert pressure from inH2O to a higher precision use this pressure unit converter.
inH2O low range pressure measurement products
- Wet wet DP sensor for 10 inches of water range
- 1 inH2O differential intrinsically safe 4-20mA out air pressure sensor for HVAC use
- +/- 30 inches of water compound range pressure transmitter
- 0.1 inH2O differential range 0-10Vdc output between rooms air pressure sensor