Convert Centimeter of Water to Inch of Mercury
Input the number of cmh₂o you want to convert to inhg.
How to Convert cmH₂O to inHg
The centimeter of water and inch of mercury are both units of pressure. 1 inch of mercury equals 34.531557668 cmh₂o. This means to convert cmh₂o to inhg, you divide by 34.531557668.
Formula
Step-by-Step Example
Convert 5 cmH₂O to inhg:
We need to convert cmh₂o to inhg
Since 1 inHg = 34.531557668 cmH₂O, divide by 34.531557668
5 ÷ 34.531557668 = 0.14479509
5 cmH₂O = 0.14479509 inHg
Centimeter of Water to Inch of Mercury Conversion Table
Quick reference table for common centimeter of water to inch of mercury conversions. Click any value for detailed calculation.
| cmH₂O (cmH₂O) | inHg (inHg) |
|---|---|
| 1 cmH₂O | 0.028959018 inHg |
| 2 cmH₂O | 0.057918036 inHg |
| 5 cmH₂O | 0.14479509 inHg |
| 10 cmH₂O | 0.28959018 inHg |
| 15 cmH₂O | 0.43438527 inHg |
| 20 cmH₂O | 0.57918036 inHg |
| 25 cmH₂O | 0.72397545 inHg |
| 50 cmH₂O | 1.4479508999 inHg |
| 100 cmH₂O | 2.8959017998 inHg |
About These Units
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.
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.
Frequently Asked Questions
How do I convert cmh₂o to inhg?
To convert cmh₂o to inhg, divide the value by 34.531557668. For example, 10 cmH₂O = 0.28959018 inHg.
How many inhg are in 1 centimeter of water?
1 centimeter of water equals 0.028959018 inhg.
What is the formula for cmh₂o to inhg?
The formula is: inHg = cmH₂O ÷ 34.531557668.