mmHg (0°C) to mmH2O (4°C) Converter

Pressure Converter

29 units available

Decimals:

From

To

13.5951

1 mmHg = 13.5951 mmH2O

Formula:

mmH2O = mmHg × 13.5951

With your value: 1 mmHg = 13.5951 mmH2O

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

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

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

mmHg (0°C) (mmHg)	mmH2O (4°C) (mmH2O)
0.5	6.79755
1	13.5951
2	27.1902
5	67.9755
10	135.951
15	203.9265
20	271.902
25	339.8775
50	679.755
100	1,359.51
250	3,398.775
500	6,797.55
1000	13,595.1

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

mmH2O (4°C) (mmH2O)	mmHg (0°C) (mmHg)
0.5	0.036778
1	0.073556
2	0.147112
5	0.36778
10	0.735559
15	1.103339
20	1.471118
25	1.838898
50	3.677796
100	7.355591
250	18.388978
500	36.777957
1000	73.555914

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

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 mmHg (0°C) to mmH2O (4°C)

To convert from mmHg (0°C) (mmHg) to mmH2O (4°C) (mmH2O), multiply the value by 13.5951.

Formula: mmH2O = mmHg × 13.5951

Reverse: mmHg = mmH2O × 0.0735559135

Step-by-Step Example

Start with your value in mmHg (0°C). For example: 5 mmHg
Multiply by the conversion factor: 5 x 13.5951
The result is: 67.9755 mmH2O

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 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 mmHg (0°C)?

There are exactly 13.5951 mmH2O (4°C) in 1 mmHg (0°C). This means the conversion factor from mmHg (0°C) to mmH2O (4°C) is 13.5951.

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

The formula to convert mmHg (0°C) to mmH2O (4°C) is: mmH2O = mmHg × 13.5951. For example, to convert 10 mmHg (0°C) to mmH2O (4°C), you would multiply 10 by 13.5951.

What is a mmHg (0°C)?