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
- 250″wc Orifice plate flow measurement dp transmitter
- 100 inH2Og 4-20mA low concentration acid solution pressure sensor for CIP cleaning
- 0.06 inWG positive air pressure transmitter for HVAC blower fan control
- 40 inH2O g peak/valley storing pressure gauge for monitoring gas feed fluctuations
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
- 1 inH2O differential intrinsically safe 4-20mA out air pressure sensor for HVAC use
- +/- 1 inH2O compound range pressure sensor
- 250″wc Orifice plate flow measurement dp transmitter
- 25 inH2Og range 4-20mA output natural gas pressure sensor for use in generator supply