cmH2O (4°C) to mmHg (0°C) Converter

Pressure Converter

29 units available

Decimals:

From

To

0.735559

1 cmH2O = 0.735559 mmHg

Formula:

mmHg = cmH2O × 0.7355591353

With your value: 1 cmH2O = 0.73555914 mmHg

Other cmH2O (4°C) to mmHg (0°C) conversions

2 cmH2O to mmHg 3 cmH2O to mmHg 4 cmH2O to mmHg 5 cmH2O to mmHg 6 cmH2O to mmHg 7 cmH2O to mmHg 8 cmH2O to mmHg

cmH2O (4°C) to mmHg (0°C) Conversion Table

cmH2O (4°C) (cmH2O)	mmHg (0°C) (mmHg)
0.5	0.36778
1	0.735559
2	1.471118
5	3.677796
10	7.355591
15	11.033387
20	14.711183
25	18.388978
50	36.777957
100	73.555914
250	183.889784
500	367.779568
1000	735.559135

mmHg (0°C) to cmH2O (4°C) Conversion Table

mmHg (0°C) (mmHg)	cmH2O (4°C) (cmH2O)
0.5	0.679755
1	1.35951
2	2.71902
5	6.79755
10	13.5951
15	20.39265
20	27.1902
25	33.98775
50	67.9755
100	135.951
250	339.8775
500	679.755
1000	1,359.51

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

cmH2O (4°C) (cmH2O)

Pressure

Exact conversion

Derived from the pascal (1 Pa = 1 N/m²). The standard atmosphere is exactly 101 325 Pa.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

mmHg (0°C) (mmHg)

Pressure

Conventional value

The conventional millimetre of mercury is 133.322 387 415 Pa, based on mercury density 13 595.1 kg/m³ and g₀ = 9.806 65 m/s².

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert cmH2O (4°C) to mmHg (0°C)

To convert from cmH2O (4°C) (cmH2O) to mmHg (0°C) (mmHg), multiply the value by 0.7355591353.

Formula: mmHg = cmH2O × 0.7355591353

Reverse: cmH2O = mmHg × 1.35951

Step-by-Step Example

Start with your value in cmH2O (4°C). For example: 5 cmH2O
Multiply by the conversion factor: 5 x 0.7355591353
The result is: 3.677796 mmHg

About cmH2O (4°C)

The cmh2o (4°c) (cmH2O) is a unit of pressure and stress. One cmh2o (4°c) equals 98.0665 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: pressure calculations, engineering and science, education.

About mmHg (0°C)

The mmhg (0°c) (mmHg) is a unit of pressure and stress. One mmhg (0°c) equals 133.3223874 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: pressure calculations, engineering and science, education.

Frequently Asked Questions

How many mmHg (0°C) are in 1 cmH2O (4°C)?

There are exactly 0.7355591353 mmHg (0°C) in 1 cmH2O (4°C). This means the conversion factor from cmH2O (4°C) to mmHg (0°C) is 0.7355591353.

What is the formula to convert cmH2O (4°C) to mmHg (0°C)?

The formula to convert cmH2O (4°C) to mmHg (0°C) is: mmHg = cmH2O × 0.7355591353. For example, to convert 10 cmH2O (4°C) to mmHg (0°C), you would multiply 10 by 0.7355591353.

What is a cmH2O (4°C)?