cmHg (0°C) to mmH2O (4°C) Converter

Pressure Converter

29 units available

Decimals:

From

To

135.951

1 cmHg = 135.951 mmH2O

Formula:

mmH2O = cmHg × 135.951

With your value: 1 cmHg = 135.951 mmH2O

Other cmHg (0°C) to mmH2O (4°C) conversions

2 cmHg to mmH2O 3 cmHg to mmH2O 4 cmHg to mmH2O 5 cmHg to mmH2O 6 cmHg to mmH2O 7 cmHg to mmH2O 8 cmHg to mmH2O

cmHg (0°C) to mmH2O (4°C) Conversion Table

cmHg (0°C) (cmHg)	mmH2O (4°C) (mmH2O)
0.5	67.9755
1	135.951
2	271.902
5	679.755
10	1,359.51
15	2,039.265
20	2,719.02
25	3,398.775
50	6,797.55
100	13,595.1
250	33,987.75
500	67,975.5
1000	135,951

mmH2O (4°C) to cmHg (0°C) Conversion Table

mmH2O (4°C) (mmH2O)	cmHg (0°C) (cmHg)
0.5	0.003678
1	0.007356
2	0.014711
5	0.036778
10	0.073556
15	0.110334
20	0.147112
25	0.18389
50	0.36778
100	0.735559
250	1.838898
500	3.677796
1000	7.355591

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.

cmHg (0°C) (cmHg)

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

mmH2O (4°C) (mmH2O)

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 cmHg (0°C) to mmH2O (4°C)

To convert from cmHg (0°C) (cmHg) to mmH2O (4°C) (mmH2O), multiply the value by 135.951.

Formula: mmH2O = cmHg × 135.951

Reverse: cmHg = mmH2O × 0.0073555914

Step-by-Step Example

Start with your value in cmHg (0°C). For example: 5 cmHg
Multiply by the conversion factor: 5 x 135.951
The result is: 679.755 mmH2O

About cmHg (0°C)

The cmhg (0°c) (cmHg) is a unit of pressure and stress. One cmhg (0°c) equals 1333.223874 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 mmH2O (4°C)

The mmh2o (4°c) (mmH2O) is a unit of pressure and stress. One mmh2o (4°c) equals 9.80665 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 mmH2O (4°C) are in 1 cmHg (0°C)?

There are exactly 135.951 mmH2O (4°C) in 1 cmHg (0°C). This means the conversion factor from cmHg (0°C) to mmH2O (4°C) is 135.951.

What is the formula to convert cmHg (0°C) to mmH2O (4°C)?

The formula to convert cmHg (0°C) to mmH2O (4°C) is: mmH2O = cmHg × 135.951. For example, to convert 10 cmHg (0°C) to mmH2O (4°C), you would multiply 10 by 135.951.

What is a cmHg (0°C)?