mmH2O (4°C) to Bar Converter
Convert mmH2O (4°C) (mmH2O) to Bar (bar) instantly. 1 mmH2O = 9.806650e-5 bar.
Pressure Converter
29 units available
1 mmH2O = 9.806650e-5 bar
Formula:
bar = mmH2O × 0.0000980665With your value: 1 mmH2O = 9.806650e-5 bar
Other mmH2O (4°C) to Bar conversions
mmH2O (4°C) to Bar Conversion Table
| mmH2O (4°C) (mmH2O) | Bar (bar) |
|---|---|
| 0.5 | 4.903325e-5 |
| 1 | 9.806650e-5 |
| 2 | 0.000196 |
| 5 | 0.00049 |
| 10 | 0.000981 |
| 15 | 0.001471 |
| 20 | 0.001961 |
| 25 | 0.002452 |
| 50 | 0.004903 |
| 100 | 0.009807 |
| 250 | 0.024517 |
| 500 | 0.049033 |
| 1000 | 0.098067 |
Bar to mmH2O (4°C) Conversion Table
| Bar (bar) | mmH2O (4°C) (mmH2O) |
|---|---|
| 0.5 | 5,098.581065 |
| 1 | 10,197.16213 |
| 2 | 20,394.32426 |
| 5 | 50,985.810649 |
| 10 | 101,971.621298 |
| 15 | 152,957.431947 |
| 20 | 203,943.242596 |
| 25 | 254,929.053244 |
| 50 | 509,858.106489 |
| 100 | 1,019,716.212978 |
| 250 | 2,549,290.532445 |
| 500 | 5,098,581.06489 |
| 1000 | 10,197,162.129779 |
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.
mmH2O (4°C) (mmH2O)
Pressure
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
Bar (bar)
Pressure
1 bar = 100 000 Pa exactly.
Source: Units accepted for use with the SI, SI Brochure Table 8
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert mmH2O (4°C) to Bar
To convert from mmH2O (4°C) (mmH2O) to Bar (bar), multiply the value by 9.806650e-5.
Formula: bar = mmH2O × 0.0000980665
Reverse: mmH2O = bar × 10,197.1621297793
Step-by-Step Example
- Start with your value in mmH2O (4°C). For example: 5 mmH2O
- Multiply by the conversion factor: 5 x 9.806650e-5
- The result is: 0.00049 bar
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.
About Bar
The bar is a metric unit of pressure equal to 100,000 Pascals, roughly equal to atmospheric pressure at sea level.
Common uses: tire pressure, industrial, meteorology.
Frequently Asked Questions
How many Bar are in 1 mmH2O (4°C)?
There are exactly 9.806650e-5 Bar in 1 mmH2O (4°C). This means the conversion factor from mmH2O (4°C) to Bar is 9.806650e-5.
What is the formula to convert mmH2O (4°C) to Bar?
The formula to convert mmH2O (4°C) to Bar is: bar = mmH2O × 0.0000980665. For example, to convert 10 mmH2O (4°C) to Bar, you would multiply 10 by 9.806650e-5.
What is a 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.
What is a Bar?
The bar is a metric unit of pressure equal to 100,000 Pascals, roughly equal to atmospheric pressure at sea level.
What are the common uses of mmH2O (4°C)?
The mmH2O (4°C) is commonly used in pressure calculations, engineering and science, education.
Related Pressure Conversions
Cite this page
UnitConvertLab. (2026). mmH2O (4°C) to Bar converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/mmh2o-to-bar