Millimeters of water to Inches of Mercury

Millimeters of water to Inches of Mercury conversion calculator

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Inches of Mercury to Millimeters of water (Swap units)

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1mm H2O = 0.0029inHg

Note: You can increase or decrease the accuracy of this answer by selecting the number of significant figures required from the options above the result.

Millimeters of water to Inches of Mercury conversion formula

Inches of Mercury = Millimeters of water / 345.31698373

Millimeters of water to Inches of Mercury calculation

Inches of Mercury = Millimeters of water / 345.31698373

Inches of Mercury = 1 / 345.31662715882

Inches of Mercury = 0.0029

mm of water

The millimeter of water (mmH₂O) is a unit of pressure exerted by a 1 millimeter column of water at 4 degrees Celsius under standard gravity.

Inches of Mercury

Inches of Mercury (inHg) are used to measure pressure in the imperial system. Traditionally this unit is used in the United States for barometric pressure in weather reports. It is the pressure from a column of mercury exactly one inch high at standard gravity.

 

Millimeters of water to Inches of Mercury table

Starting value
Increment
Accuracy
Millimeters of water
Inches of Mercury
0mm H2O
0.00000inHg
1mm H2O
0.00290inHg
2mm H2O
0.00579inHg
3mm H2O
0.00869inHg
4mm H2O
0.01158inHg
5mm H2O
0.01448inHg
6mm H2O
0.01738inHg
7mm H2O
0.02027inHg
8mm H2O
0.02317inHg
9mm H2O
0.02606inHg
10mm H2O
0.02896inHg
11mm H2O
0.03185inHg
12mm H2O
0.03475inHg
13mm H2O
0.03765inHg
14mm H2O
0.04054inHg
15mm H2O
0.04344inHg
16mm H2O
0.04633inHg
17mm H2O
0.04923inHg
18mm H2O
0.05213inHg
19mm H2O
0.05502inHg
Millimeters of water
Inches of Mercury
20mm H2O
0.05792inHg
21mm H2O
0.06081inHg
22mm H2O
0.06371inHg
23mm H2O
0.06661inHg
24mm H2O
0.06950inHg
25mm H2O
0.07240inHg
26mm H2O
0.07529inHg
27mm H2O
0.07819inHg
28mm H2O
0.08109inHg
29mm H2O
0.08398inHg
30mm H2O
0.08688inHg
31mm H2O
0.08977inHg
32mm H2O
0.09267inHg
33mm H2O
0.09556inHg
34mm H2O
0.09846inHg
35mm H2O
0.10136inHg
36mm H2O
0.10425inHg
37mm H2O
0.10715inHg
38mm H2O
0.11004inHg
39mm H2O
0.11294inHg
Millimeters of water
Inches of Mercury
40mm H2O
0.11584inHg
41mm H2O
0.11873inHg
42mm H2O
0.12163inHg
43mm H2O
0.12452inHg
44mm H2O
0.12742inHg
45mm H2O
0.13032inHg
46mm H2O
0.13321inHg
47mm H2O
0.13611inHg
48mm H2O
0.13900inHg
49mm H2O
0.14190inHg
50mm H2O
0.14479inHg
51mm H2O
0.14769inHg
52mm H2O
0.15059inHg
53mm H2O
0.15348inHg
54mm H2O
0.15638inHg
55mm H2O
0.15927inHg
56mm H2O
0.16217inHg
57mm H2O
0.16507inHg
58mm H2O
0.16796inHg
59mm H2O
0.17086inHg
Millimeters of water
Inches of Mercury
60mm H2O
0.17375inHg
61mm H2O
0.17665inHg
62mm H2O
0.17955inHg
63mm H2O
0.18244inHg
64mm H2O
0.18534inHg
65mm H2O
0.18823inHg
66mm H2O
0.19113inHg
67mm H2O
0.19402inHg
68mm H2O
0.19692inHg
69mm H2O
0.19982inHg
70mm H2O
0.20271inHg
71mm H2O
0.20561inHg
72mm H2O
0.20850inHg
73mm H2O
0.21140inHg
74mm H2O
0.21430inHg
75mm H2O
0.21719inHg
76mm H2O
0.22009inHg
77mm H2O
0.22298inHg
78mm H2O
0.22588inHg
79mm H2O
0.22878inHg