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millimeters of mercury to torr conversion

millimeters of mercury to torr conversion table

millimeters of mercury (mmHg)torr (torr)
00
10.9999972366149
21.9999944732297
32.9999917098446
43.9999889464594
54.9999861830743
65.9999834196891
76.999980656304
87.9999778929188
98.9999751295337
109.9999723661485
2019.999944732297
3029.999917098446
4039.999889464594
5049.999861830743
6059.999834196891
7069.99980656304
8079.999778929188
9089.999751295337
10099.999723661485
1000999.99723661485

How to convert millimeters of mercury to torr?

Millimeters of Mercury (mmHg) and Torr are units that measure pressure and are essentially equivalent for practical purposes because they are both based on the original definition of the standard atmospheric pressure proposed by Evangelista Torricelli.

1 mmHg is exactly equal to 1 Torr.

Conversion: 1 mmHg = 1 Torr

Real-world Examples

  1. Atmospheric Pressure:

    • Standard atmospheric pressure at sea level is 760 mmHg, which is also 760 Torr.

  2. Blood Pressure:

    • Normal resting blood pressure in adults is typically around 120/80 mmHg (systolic/diastolic). This can also be expressed as 120/80 Torr.

  3. Vacuum Systems:

    • High vacuum systems, like those used in scientific research or the semiconductor industry, often operate at pressures as low as 10^-6 to 10^-9 Torr. This translates directly to 10^-6 to 10^-9 mmHg.

  4. Medical Respirators:

    • In medical ventilators, airway pressure measurements are often given in cmH2O (centimeters of water), but equivalent mmHg values are also used. 1 cmH2O is approximately 0.7355 mmHg.

  5. Barometric Pressure:

    • Weather stations and meteorologists often report atmospheric pressures in various units. A typical low-pressure system might show a pressure of around 980 millibars, which can be converted to approximately 735 mmHg (since 1 millibar is roughly equal to 0.75006 mmHg).

  6. Industrial Applications:

    • Industrial processes like chemical production or food packaging might use pressure readings in mmHg. For example, pressures in a vacuum packaging process might be monitored at around 20-30 mmHg.

Understanding these conversions and examples helps in fields such as medicine, meteorology, industrial applications, and scientific research. The direct conversion between mmHg and Torr simplifies many practical and theoretical tasks in these areas.

See below section for step by step unit conversion with formulas and explanations. Please refer to the table below for a list of all the torr to other unit conversions.

What is millimeters of mercury?

Millimeters of mercury (mmHg) is a unit of measurement used to express pressure, specifically atmospheric pressure. It's commonly used in medicine and physiology to measure blood pressure.

In essence, mmHg measures the pressure exerted by a column of mercury, which is a dense liquid metal, against a surface. The "millimeter" refers to the height of the mercury column, while the "mercury" part comes from the use of mercury as the liquid in the measuring device.

A standard barometer (an instrument that measures atmospheric pressure) uses a column of mercury to measure pressure. When the air pressure is high, the mercury level rises, and when it's low, the level drops. This allows for a direct measurement of the pressure in terms of millimeters of mercury.

In medical contexts, blood pressure readings are expressed in mmHg (systolic pressure) over mmHg (diastolic pressure). For example:

  • A blood pressure reading of 120/80 mmHg means that the systolic pressure is 120 mmHg and the diastolic pressure is 80 mmHg.

The use of mmHg as a unit of measurement has been largely replaced by other units, such as kilopascals (kPa), in scientific and technical applications. However, it remains a widely recognized and used unit in medical and physiological contexts.

What is torr?

A unit of pressure!

One torr (symbol: Torr) is a non-SI unit of pressure that is commonly used in scientific and technical applications, particularly in fields like physics, chemistry, and engineering.

The torr is defined as the pressure exerted by a column of mercury 1 mm high when the temperature is at standard conditions. It's equivalent to 1/760 of an atmosphere (atm), which is a more commonly used unit of pressure.

To give you a better idea, here are some approximate conversions:

  • 1 torr = 0.00133 atm
  • 1 torr = 13.3 mbar (millibars)
  • 1 torr ≈ 1 mmHg (millimeters of mercury)

The torr is named after Evangelista Torricelli, an Italian physicist who invented the barometer in 1643.

In everyday life, you're unlikely to encounter torrs directly, but they are often used in laboratory settings and industrial applications where precise pressure measurements are crucial.

Complete millimeters of mercury conversion table

Enter # of millimeters of mercury
Convert 1 mmHg to other unitsResult
millimeters of mercury to pascals (mmHg to Pa)133.322
millimeters of mercury to kilopascals (mmHg to kPa)0.133322
millimeters of mercury to megapascals (mmHg to MPa)0.000133322
millimeters of mercury to hectopascals (mmHg to hPa)1.33322
millimeters of mercury to bar (mmHg to bar)0.00133322
millimeters of mercury to torr (mmHg to torr)0.9999972366149
millimeters of mercury to meters of water @ 4°C (mmHg to mH2O)0.01359506049466
millimeters of mercury to pounds per square inch (mmHg to psi)0.01933671367695
millimeters of mercury to kilopound per square inch (mmHg to ksi)0.00001933671367695
millimeters of mercury to Inches of mercury (mmHg to inHg)0.03936996069858

Pressure conversions