Centimeters of Water (cmH₂O)	Bars (bar)
1 cmH₂O	0.0009807 bar
2 cmH₂O	0.001961 bar
5 cmH₂O	0.004903 bar
10 cmH₂O	0.009807 bar
25 cmH₂O	0.02452 bar
50 cmH₂O	0.04903 bar
100 cmH₂O	0.09807 bar
250 cmH₂O	0.2452 bar
500 cmH₂O	0.4903 bar
1000 cmH₂O	0.9807 bar

Convert Centimeters of Water to Bars

Convert centimeters of water to bars (cmH₂O to bar) with our instant calculator. 1 cmH₂O = 0.000981 bar. Includes exact formula and reference tables.

How to Convert Centimeters of Water to Bars (cmH₂O to bar)

1 Centimeter of Water (cmH₂O) is equal to 0.000981 Bars (bar). Multiply the centimeter of water value by 0.000980665

Quick Answer 1 cmH₂O = 0.000981 bar

Formula bar = cmH₂O × 0.000980665

Inverse Factor 1 bar = 1019.716213 cmH₂O

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 Bars (bar): Bar (bar) is a unit in the Pressure measurement category. It is a standard everyday unit of pressure measurement. Relative to the pressure base unit, 1 bar equals 100000 Pascals (Pa).

Need to convert in the opposite direction? Visit our Convert Bars to Centimeters of Water (bar to cmH₂O) calculator (1 bar = 1019.716213 cmH₂O).

Step-by-Step Worked Examples (cmH₂O to bar)

Convert 5 Centimeters of Water to Bars: Applying the formula (bar = cmH₂O × 0.000980665): starting with 5 cmH₂O, multiply the centimeter of water value by 0.000980665 to get 0.0049 bar.
Convert 10 Centimeters of Water to Bars: Applying the formula (bar = cmH₂O × 0.000980665): starting with 10 cmH₂O, multiply the centimeter of water value by 0.000980665 to get 0.0098 bar.
Convert 50 Centimeters of Water to Bars: Applying the formula (bar = cmH₂O × 0.000980665): starting with 50 cmH₂O, multiply the centimeter of water value by 0.000980665 to get 0.049 bar.

Popular Pressure Conversions

Pound per Square Inch ⇄ Bar

Multiply PSI by ~0.0689476 to convert to bar.

Bar ⇄ Pound per Square Inch

Multiply bar by ~14.5038 to find pressure in pounds per square inch (PSI).

Kilopascal ⇄ Pound per Square Inch

1 PSI equals approximately 6.89476 kilopascals (kPa).

Standard Atmosphere ⇄ Pound per Square Inch

1 standard atmosphere equals approximately 14.6959 PSI.

Frequently Asked Questions

Verified answers and formulas for converting centimeters of water to bars.

How many bars are in 1 centimeter of water?

There are 0.000981 bars (bar) in 1 centimeter of water (cmH₂O). Conversely, 1 bar equals 1019.716213 centimeters of water.

How do you convert centimeters of water to bars?

To convert centimeters of water (cmH₂O) to bars (bar), use the formula: bar = cmH₂O × 0.000980665. Multiply the centimeter of water value by 0.000980665. For example, 10 cmH₂O equals 0.0098 bar.

How do I convert back from bars to centimeters of water?

To convert in the reverse direction from bars (bar) to centimeters of water (cmH₂O), use the inverse formula: cmH₂O = bar × 1019.716213. Multiply the bar value by 1019.716213 (1 bar = 1019.716213 cmH₂O).

What is the difference between centimeter of water (cmH₂O) and bar (bar)?

Both centimeter of water and bar 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). Bar (bar) is a unit in the Pressure measurement category. It is a standard everyday unit of pressure measurement. Relative to the pressure base unit, 1 bar equals 100000 Pascals (Pa).

How many PSI is in 1 bar?

1 bar equals approximately 14.5038 PSI. For car tires, 2.2 bar is roughly 32 PSI.