Convert millimeter mercury to torr - Conversion of Measurement Units

Convert to torr

More information from the unit converter

How many millimeter mercury in 1 torr?
The answer is 0.9999998575337.
We assume you are converting between and torr.
You can view more details on each measurement unit: millimeter mercury or
torr
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.0075006157584566 millimeter mercury, or 0.0075006168270417 torr.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimeters mercury and torrs.
Type in your own numbers in the form to convert the units!

Quick conversion chart of millimeter mercury to torr

The millimeter of mercury by definition is 133.322387415 Pa (13.5951 g/cm3 × 9.80665 m/s2 × 1 mm), which is approximated with known accuracies of density of mercury and standard gravity.

The torr is defined as 1/760 of one standard atmosphere, while the atmosphere is defined as 101325 pascals. Therefore, 1 Torr is equal to
101325/760 Pa. The decimal form of this fraction is approximately 133.322368421.

The relationship between the torr and the millimeter of mercury is:

The difference between one millimeter of mercury and one torr, as well as between one atmosphere (101.325 kPa) and 760 mmHg (101.3250144354 kPa), is less than one part in seven million (or less than 0.000015%). This small difference is negligible for most applications outside metrology.

Definition: Torr

The torr is a non-SI unit of pressure, named after Evangelista Torricelli. Its symbol is Torr.

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