Convert Inch of Mercury to Centimeter of Water
Convert inhg to cmh₂o by entering a value below.
How to Convert inHg to cmH₂O
The inch of mercury and centimeter of water are both units of pressure. 1 inch of mercury equals 34.531557668 cmh₂o. This means to convert inhg to cmh₂o, you multiply by 34.531557668.
Formula
Step-by-Step Example
Convert 5 inHg to cmh₂o:
We need to convert inhg to cmh₂o
Since 1 inHg = 34.531557668 cmH₂O, multiply by 34.531557668
5 × 34.531557668 = 172.65778834
5 inHg = 172.65778834 cmH₂O
Inch of Mercury to Centimeter of Water Conversion Table
Quick reference table for common inch of mercury to centimeter of water conversions. Click any value for detailed calculation.
| inHg (inHg) | cmH₂O (cmH₂O) |
|---|---|
| 1 inHg | 34.531557668 cmH₂O |
| 2 inHg | 69.063115335 cmH₂O |
| 5 inHg | 172.65778834 cmH₂O |
| 10 inHg | 345.31557668 cmH₂O |
| 15 inHg | 517.97336501 cmH₂O |
| 20 inHg | 690.63115335 cmH₂O |
| 25 inHg | 863.28894169 cmH₂O |
| 50 inHg | 1726.5778834 cmH₂O |
| 100 inHg | 3453.1557668 cmH₂O |
About These Units
Inch of Mercury (inHg)
Inches of mercury (inHg) measure atmospheric pressure in US aviation and weather reports. Standard sea level pressure is 29.92 inHg. Altimeter settings use inHg. One inHg equals 25.4 mmHg or approximately 33.86 millibars.
Centimeter of Water (cmH₂O)
Centimeters of water (cmH₂O) measure low pressures in medical ventilators, CPAP machines (4-20 cmH₂O), HVAC systems, and manometers. One cmH₂O equals 98.07 Pascals. Based on the pressure exerted by a water column.
Frequently Asked Questions
How do I convert inhg to cmh₂o?
To convert inhg to cmh₂o, multiply the value by 34.531557668. For example, 10 inHg = 345.31557668 cmH₂O.
How many cmh₂o are in 1 inch of mercury?
1 inch of mercury equals 34.531557668 cmh₂o.
What is the formula for inhg to cmh₂o?
The formula is: cmH₂O = inHg × 34.531557668.