Bar to mmWC Calculator

Convert pressure from bar to millimeters of water column (mmWC) instantly using the calculator below. The conventional conversion used is 1 bar = 10197.162 mmWC.

Quick Conversion

1 bar = 10197.162 mmWC

Formula:

mmWC = bar × 10197.162

This conversion is useful for instrumentation, HVAC, process control, pneumatic systems, pressure measurement, and other engineering applications.

Definition: Bar

A bar is a metric unit of pressure, defined as 100,000 Pascals. It is not an SI unit, but it is widely used in various industries, especially in meteorology and engineering.

Definition: Millimeter of Water Column (mmWC)

A millimeter of water column (symbol: mmWC or mmH?O) is a unit of pressure that represents the pressure exerted by a 1 mm high column of water at 4°C under standard gravity. It is commonly used in HVAC systems, gas pressure measurements, and low-pressure systems.

Formula for Bar to mmWC Conversion:

The conversion from bar to millimeters of water column is performed by multiplying the pressure in bar by 10197.162.

Bar to mmWC Formula

mmWC = bar × 10197.162

Where:

• mmWC = pressure in millimeters of water column
• bar = pressure in bar
• 10197.162 = conventional bar to mmWC conversion factor

Bar to mmWC Conversion Factor

1 bar = 10197.162 mmWC

For practical engineering calculations, this can also be written as:

1 bar ≈ 10197.16 mmWC

Reverse Conversion Formula

To convert mmWC back to bar:

bar = mmWC ÷ 10197.162

For example:

10197.162 mmWC ÷ 10197.162 = 1 bar

How to Convert Bar to mmWC: Example Calculation

Converting bar to mmWC requires a simple multiplication. Multiply the pressure value in bar by 10197.162.

Example 1: Convert 0.1 bar to mmWC

0.1 × 10197.162 = 1019.7162 mmWC

Therefore:

0.1 bar = 1019.7162 mmWC

Example 2: Convert 0.5 bar to mmWC

0.5 × 10197.162 = 5098.581 mmWC

Therefore:

0.5 bar = 5098.581 mmWC

Example 3: Convert 1 bar to mmWC

1 × 10197.162 = 10197.162 mmWC

Therefore:

1 bar = 10197.162 mmWC

Example 4: Convert 2 bar to mmWC

2 × 10197.162 = 20394.324 mmWC

Therefore:

2 bar = 20394.324 mmWC

Example 5: Convert 5 bar to mmWC

5 × 10197.162 = 50985.810 mmWC

Therefore:

5 bar = 50985.810 mmWC

Example 6: Convert 10 bar to mmWC

10 × 10197.162 = 101971.620 mmWC

Therefore:

10 bar = 101971.620 mmWC

Bar to mmWC Conversion Table

The following table provides commonly used bar to millimeter water column conversions.

mmWC to Bar Conversion Table

To convert millimeters of water column back to bar, divide the mmWC value by 10197.162.

bar = mmWC ÷ 10197.162

Bar to mmWC Conversion in Instrumentation

Instrumentation engineers may need to convert between bar and mmWC when pressure ranges are specified in different units.

Bar is commonly used for general process pressure, equipment ratings, pneumatic systems, and pressure gauges, while mmWC is frequently encountered in low-pressure and differential pressure applications.

Pressure Transmitter Applications

A pressure or differential pressure transmitter may have its range specified in bar, while the process or calibration documentation may use mmWC.

For example, a transmitter range of:

0 to 0.5 bar

can be converted to:

0.5 × 10197.162 = 5098.581 mmWC

Therefore:

0 to 0.5 bar = 0 to 5098.581 mmWC

HVAC Applications

HVAC systems often use water column units when measuring relatively small pressure differences across ducts, filters, fans, and air handling equipment.

Converting bar to mmWC allows engineers to compare pressure readings when different instruments or specifications use different units.

Differential Pressure Measurement

Differential pressure instruments may use mmWC for low pressure ranges, while project specifications or datasheets may state pressure in bar.

The conversion formula provides a quick way to compare the two values.

Pneumatic Systems

Pneumatic equipment commonly specifies pressure in bar. When a low pressure measurement needs to be expressed as a water column value, the bar to mmWC conversion can be applied directly.

Instrument Calibration

During calibration, engineers may encounter test equipment configured in bar while the instrument range is documented in mmWC. Converting the units before applying the test pressure helps prevent range and calibration errors.

This calculator is a valuable tool for professionals in fields like engineering, process control, and instrumentation that require accurate pressure conversions.

Bar vs mmWC: When Should Each Unit Be Used?

Bar and mmWC are both used for pressure measurement, but they are convenient for different pressure ranges.

For relatively high process pressures, bar is usually more convenient. For low differential pressures, mmWC can provide a more practical numerical range.

Common Pressure Conversions with Millimeter of Water Column (mmWC)

Below are the most frequently used conversion calculators and formulas involving mmWC (Millimeters of Water Column), a widely used low-range pressure unit in HVAC, industrial, and laboratory applications.

1. Millimeter of Water Column (mmWC) to Millimeter of Mercury (mmHg) Pressure Unit Conversion Calculator
2. Millimeter of Mercury (mmHg) to Millimeter of Water Column (mmWC) Pressure Unit Conversion Calculator
3. Kilopascal (kPa) to Millimeter of Water Column (mmWC) Pressure Unit Conversion Calculator
4. Millimeter of Water Column (mmWC) to Kilopascal (kPa) Pressure Unit Conversion Calculator
5. Millimeter of Water Column (mmWC) to Millibar Pressure Unit Conversion Calculator
6. Millibar to Millimeter of Water Column (mmWC) Pressure Unit Conversion Calculator
7. Kg/cm² to Millimeter of Water Column (mmWC) Pressure Unit Conversion Calculator
8. Millimeter of Water Column (mmWC) to Kg/cm² Pressure Unit Conversion Calculator
9. Psi to Millimeter of Water Column (mmWC) Pressure Unit Conversion Calculator
10. Millimeter of Water Column (mmWC) to Psi Pressure Unit Conversion Calculator
11. Millimeter of Water Column (mmWC) to Bar Pressure Unit Conversion Calculator
12. Bar to Millimeter of Water Column (mmWC) Pressure Unit Conversion Calculator

Frequently Asked Questions About Bar to mmWC

What is 1 bar in mmWC?

1 bar is equal to approximately 10197.162 mmWC using the conventional conversion factor.

How do I convert bar to mmWC?

Multiply the pressure in bar by 10197.162. The formula is mmWC = bar × 10197.162.

What is the bar to mmWC conversion factor?

The conversion factor is approximately 10197.162 mmWC per bar.

What is 0.1 bar in mmWC?

0.1 bar = 1019.716 mmWC.

What is 0.5 bar in mmWC?

0.5 bar = 5098.581 mmWC.

What is 2 bar in mmWC?

2 bar = 20394.324 mmWC.

What is 5 bar in mmWC?

5 bar = 50985.810 mmWC.

What is 10 bar in mmWC?

10 bar = 101971.621 mmWC.

Is mmWC the same as mmH2O?

mmWC and mmH₂O commonly refer to millimeters of water column when the same reference definition is used.

How do I convert mmWC to bar?

Divide the mmWC value by 10197.162. The formula is bar = mmWC ÷ 10197.162.

How many mmWC are in 1 kg/cm2?

Using the conventional engineering conversion, 1 kgf/cm² is approximately 10000 mmWC.

Where is mmWC used?

mmWC is commonly used for low pressure and differential pressure applications such as HVAC, filter pressure drop, cleanrooms, air systems, and process instrumentation.

Why is mmWC used instead of bar?

mmWC is convenient for expressing relatively small pressure differences because it provides a practical numerical scale for low pressure applications.

Here you can refer more Online Instrumentation Calculators Collections