How many inch mercury in 1 torr?
The answer is 0.039370068949862.

We assume you are converting between and **torr**.

You can view more details on each measurement unit:

inch mercury or
torr

The SI derived unit for **pressure** is the pascal.

1 pascal is equal to 0.00029529980164712 inch 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 inches mercury and torrs.

Type in your own numbers in the form to convert the units!

1 inch mercury to torr = 25.40001 torr

2 inch mercury to torr = 50.80001 torr

3 inch mercury to torr = 76.20002 torr

4 inch mercury to torr = 101.60003 torr

5 inch mercury to torr = 127.00003 torr

6 inch mercury to torr = 152.40004 torr

7 inch mercury to torr = 177.80004 torr

8 inch mercury to torr = 203.20005 torr

9 inch mercury to torr = 228.60006 torr

10 inch mercury to torr = 254.00006 torr

You can do the reverse unit conversion from torr to inch mercury, or enter any two units below:

inch mercury to gram/square centimeter

inch mercury to gigabar

inch mercury to micron of mercury

inch mercury to femtobar

inch mercury to millibar

inch mercury to decibar

inch mercury to ton/square inch

inch mercury to kilobar

inch mercury to pieze

inch mercury to yottabar

Inches of mercury or inHg is a non-SI unit for pressure. It is still widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.

It is defined as the pressure exerted by a column of mercury of 1 inch in height at 32 °F (0 °C) at the standard acceleration of gravity.

1 inHg = 3,386.389 pascals at 0 °C.

Aircraft operating at higher altitudes (above 18,000 feet) set their barometric altimeters to a standard pressure of 29.92 inHg or 1,013.2 hPa (1 hPa = 1 mbar) regardless of the actual sea level pressure, with inches of mercury used in the U.S. and Canada. The resulting altimeter readings are known as flight levels.

Piston engine aircraft with constant-speed propellers also use inHg to measure manifold pressure, which is indicative of engine power produced.

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

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