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
- Standby generator 20inH2Og range 0-5Vdc output natural gas and propane pressure sensor
- 5 inH2O g range 4-20mA output air pressure sensor for air cleaning use
- 20 inH2Og range 4-20mA output natural gas pressure transducer for commercial generator use
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
- 100 inches H2O pressure gauge
- 20 inH2O low cost stainless steel pressure sensor with 5Vdc output
- -20 to 20 inH2O g compound range 0-10Vdc output air pressure sensor for oem use
- Minus 15 mbar (6 inH2O) range suction pressure transmitter