Convert Centimeters of Water to Inches of Mercury
Convert centimeters of water to inches of mercury (cmH₂O to inHg) with our instant calculator. 1 cmH₂O = 0.028959 inHg. Includes exact formula and reference tables.
How to Convert Centimeters of Water to Inches of Mercury (cmH₂O to inHg)
1 Centimeter of Water (cmH₂O) is equal to 0.028959 Inches of Mercury (inHg). Multiply the centimeter of water value by 0.028959018
Unit Definitions & Metrology Context
The SI unit of pressure is the pascal (Pa). Standard sea-level atmosphere is defined as 101,325 Pa (1.01325 bar or ~14.696 psi).
About Centimeters of Water (cmH₂O): Centimeter of Water (cmH₂O) is a unit in the Pressure measurement category. It is widely used in cpap & medical respiratory pressure. Relative to the pressure base unit, 1 cmH₂O equals 98.0665 Pascals (Pa).
About Inches of Mercury (inHg): Inch of Mercury (inHg) is a unit in the Pressure measurement category. It is widely used in inches of mercury (aviation altimeters). Relative to the pressure base unit, 1 inHg equals 3386.389 Pascals (Pa).
Need to convert in the opposite direction? Visit our Convert Inches of Mercury to Centimeters of Water (inHg to cmH₂O) calculator (1 inHg = 34.531558 cmH₂O).
Step-by-Step Worked Examples (cmH₂O to inHg)
- Convert 5 Centimeters of Water to Inches of Mercury: Applying the formula (inHg = cmH₂O × 0.028959018): starting with 5 cmH₂O, multiply the centimeter of water value by 0.028959018 to get 0.1448 inHg.
- Convert 10 Centimeters of Water to Inches of Mercury: Applying the formula (inHg = cmH₂O × 0.028959018): starting with 10 cmH₂O, multiply the centimeter of water value by 0.028959018 to get 0.2896 inHg.
- Convert 50 Centimeters of Water to Inches of Mercury: Applying the formula (inHg = cmH₂O × 0.028959018): starting with 50 cmH₂O, multiply the centimeter of water value by 0.028959018 to get 1.448 inHg.
Popular Pressure Conversions
Frequently Asked Questions
Verified answers and formulas for converting centimeters of water to inches of mercury.
There are 0.028959 inches of mercury (inHg) in 1 centimeter of water (cmH₂O). Conversely, 1 inch of mercury equals 34.531558 centimeters of water.
To convert centimeters of water (cmH₂O) to inches of mercury (inHg), use the formula: inHg = cmH₂O × 0.028959018. Multiply the centimeter of water value by 0.028959018. For example, 10 cmH₂O equals 0.2896 inHg.
To convert in the reverse direction from inches of mercury (inHg) to centimeters of water (cmH₂O), use the inverse formula: cmH₂O = inHg × 34.53155767. Multiply the inch of mercury value by 34.53155767 (1 inHg = 34.531558 cmH₂O).
Both centimeter of water and inch of mercury measure pressure. Centimeter of Water (cmH₂O) is a unit in the Pressure measurement category. It is widely used in cpap & medical respiratory pressure. Relative to the pressure base unit, 1 cmH₂O equals 98.0665 Pascals (Pa). Inch of Mercury (inHg) is a unit in the Pressure measurement category. It is widely used in inches of mercury (aviation altimeters). Relative to the pressure base unit, 1 inHg equals 3386.389 Pascals (Pa).
1 bar equals approximately 14.5038 PSI. For car tires, 2.2 bar is roughly 32 PSI.