# Millimeter of mercury conversions

pressure conversions » millimeter of mercury conversionsThe online converter calculator on this page allows you to select the pressure/stress measurement unit you want to convert to starting from millimeters of mercury (mmHg). To make a conversion starting from a unit of pressure other than millimeter of mercury, simply click on the "Reset" button.

## What is millimeter of mercury?

### Definition:

The millimetre of mercury is a unit of pressure equal to 133.3224 pascals (1 mmHg = 133.3224 Pa), the SI derived unit of pressure. It is also equal to 1.333224 hectopascals (hPa), or 0.1333224 kilopascals (kPa), or about 0.00131578947 atmospheres (atm), or 0.00133322368 bars (bar), or 0.53524 inches of water at 4 °C (inH2O), or 0.0193368 pounds per square inch (psi), or 2.78449556 pounds per square foot (psf) or 1.0 torr (Torr).

The millimeters of mercury is the pressure applied by a column of mercury one millimeter high at 0 °C in a gravitational field.

The millimeter of mercury is used in medicine for blood pressure measurement.

*Notes:*

(i) The SI is an abbreviation for the International System of Units

(ii) The density of mercury at 0 °C is approximately 13.5951 g/cm3

(iii) According to the General Conference on Weight and Measures, the standard gravity is 9.80665 m/s² (or 32.1740 ft/s²)

### Symbol:

mmHg

### Plural:

millimeters of mercury

### Also known as:

millimeter of mercury (plural: millimeters of mercury, US spelling)

Below you can find a comprehensive list with conversions from millimeters of mercury to other (metric, imperial, or customary) pressure and stress measurement units.