This calculator allows you to easily convert pressure values from Millimeter of Water Column (mmWC) to Millimeter of Mercury (mmHg), commonly used in meteorology, medical equipment, and low-pressure scientific applications.
Definition: Millimeter of Water Column (mmWC)
The Millimeter of Water Column (mmWC) is a unit of pressure that represents the force exerted by a 1-millimeter column of water at 4°C. It is typically used for measuring low-pressure differences in systems such as HVAC, water distribution, and other low-pressure industrial applications.
Definition: Millimeter of Mercury (mmHg)
The Millimeter of Mercury (mmHg) is a unit of pressure based on the pressure exerted by a 1-millimeter column of mercury at 0°C under standard gravity. It is frequently used in barometry, medical fields (e.g., blood pressure measurement), and vacuum systems.
Formula for mmWC to mmHg Conversion:
Pressure in mmHg=Pressure in mmWC×0.0735559
How to Convert mmWC to mmHg: Example Calculation
Suppose you have a pressure of 500 mmWC.
To convert it to mmHg:
500×0.0735559=36.77795 mmHg
So, 500 mmWC is equal to 36.78 mmHg.
Quick Reference Conversion Table for mmWC to mmHg
| Millimeter of Water Column (mmWC) | Millimeter of Mercury (mmHg) |
| 1 mmWC | 0.07356 mmHg |
| 10 mmWC | 0.73556 mmHg |
| 100 mmWC | 7.35559 mmHg |
| 500 mmWC | 36.78 mmHg |
| 1000 mmWC | 73.56 mmHg |
Uses of mmWC to mmHg Conversion Calculator:
- Medical Applications: Convert pressure values for medical devices like blood pressure monitors, where mmHg is a standard unit.
- Meteorology: Useful for converting pressure readings in weather data between water and mercury columns.
- Industrial Calibration: Applicable for converting low-pressure values in laboratory equipment and process control instruments.
This mmWC to mmHg conversion calculator is an essential tool for professionals working in scientific, medical, and industrial applications where precise pressure conversions are required.
What is 1 mmWC equal to?
1 mmWC (millimeter of water column) is a unit of pressure equivalent to:
- 0.000098 bar
- 0.098 mbar
- 0.00142 psi
- 9.8 pascals (Pa)
These values are based on water at 4°C and standard gravity (9.80665 m/s²).
What is the difference between mmHg and mmWC?
Both mmHg (millimeters of mercury) and mmWC (millimeters of water column) are pressure units.
- mmHg is typically used to measure vacuum or atmospheric pressure in barometers and medical instruments.
- mmWC is commonly used for low-pressure applications such as ventilation systems, filter monitoring, and furnace draft measurements.
How do you convert mmWC to mmHg?
To convert mmWC to mmHg:
mmHg = mmWC × 0.0735559
This factor accounts for the density difference between mercury and water.
What is 1 bar in mmWC?
1 bar is equal to approximately 10,197.16 mmWC under standard temperature and pressure conditions.
What is the full form of mmWC?
mmWC stands for Millimeter of Water Column.
You may also encounter mmWG (Millimeter of Water Gauge), which is often used interchangeably with mmWC.
What does “1 column of water” mean?
A 1-inch water column represents the pressure exerted by a 1-inch high column of water.
- 28 inches of water column (inWC) equals approximately 1 psi.
What does 760 mmHg signify?
760 mmHg is the pressure that corresponds to 1 standard atmosphere (atm) at sea level. It represents the height of a mercury column supported by atmospheric pressure in a barometer under standard conditions.
Common Pressure Conversions
Industrial automation, HVAC systems, and scientific uses all depend critically on pressure measurement. Pressure levels could be stated in several units depending on the area, industry, or equipment used: psi, bar, kg/cm², mmWC, mmHg, and Pascal. We have included a collection of fast and accurate pressure unit conversion calculators to streamline your work. These instruments provide consistent and dependable unit conversions over a range of pressure scales whether your work involves engineering calculations, reporting, or calibration.
- Millibar (mBar) to Psi Pressure Unit Conversion Calculator
- Psi to Kg/cm² Pressure Unit Conversion Calculator
- Kg/cm² to Psi Pressure Unit Conversion Calculator
- Bar to Psi Pressure Unit Conversion Calculator
- Psi to KPa Pressure Unit Conversion Calculator
- Millimeter of Mercury (mmHg) to Psi Pressure Unit Conversion Calculator
- Kg/cm² to Millimeter of Water Column (mmWC) Pressure Unit Conversion Calculator
- Millibar (mbar) to Pascal (Pa) Pressure Unit Conversion Calculator
- Inch of Water (inH₂O) to Millimeter of Mercury (mmHg) Pressure Unit Conversion Calculator
Here you can refer more Online Instrumentation Calculators Collections
 to Millimeter of Mercury (mmHg) using our pressure unit conversion calculator for meteorology, medical devices, and industrial applications.){kind=link}