Easily convert Millimetres of Water Column (mmWC) to Millimetres of Mercury (mmHg) with this simple and fast online conversion tool. This tool is Ideal for pressure unit conversions.

## What is Millimetre of Water Column (mmWC)

The Millimetre of water column (mmWC) is a unit of pressure measurement, and it is defined as the pressure exerted by a column of water at 4 degree celcius. This calculation is mainly used in laboratory applications, Ventilation and Air conditioning.

## Millimetre of Water Column (mmWC) to Millimetre of Mercury (mmHg) Pressure Unit Conversion Formula

**mmHg=mmWCÃ—0.073556**

Where 0.073556 is the conversion factor between the mmWC and mmHg. To find the mmHg the known value of mmWC is multiplied with the conversion factor value.

### Example Calculation Using Formula

If you have 100 mmWC value , Then you can convert it to mmHg using the formula:

- where mmHg = ?
- mmWC = 100
- and conversion factor is 0.073556

**mmHg**=100Ã—0.073556=**7.3556 mmHg**