mmHg (0°C) to cmH2O (4°C) Converter

Pressure Converter

29 units available

Decimals:

From

To

1.35951

1 mmHg = 1.35951 cmH2O

Formula:

cmH2O = mmHg × 1.35951

With your value: 1 mmHg = 1.35951 cmH2O

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

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

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

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

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.

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

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

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

To convert from mmHg (0°C) (mmHg) to cmH2O (4°C) (cmH2O), multiply the value by 1.35951.

Formula: cmH2O = mmHg × 1.35951

Reverse: mmHg = cmH2O × 0.7355591353

Step-by-Step Example

Start with your value in mmHg (0°C). For example: 5 mmHg
Multiply by the conversion factor: 5 x 1.35951
The result is: 6.79755 cmH2O

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.

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.

Frequently Asked Questions

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

There are exactly 1.35951 cmH2O (4°C) in 1 mmHg (0°C). This means the conversion factor from mmHg (0°C) to cmH2O (4°C) is 1.35951.

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

The formula to convert mmHg (0°C) to cmH2O (4°C) is: cmH2O = mmHg × 1.35951. For example, to convert 10 mmHg (0°C) to cmH2O (4°C), you would multiply 10 by 1.35951.

What is a mmHg (0°C)?