The Torr (Torr) in Pressure

What is Torr (Torr)

The Torr is a unit of pressure that is commonly used in various scientific fields, including chemistry and physics. It is defined based on the standard atmospheric pressure and is closely related to the millimeter of mercury (mmHg). One Torr is the pressure exerted by a column of mercury that is exactly 1 millimeter high at a specific temperature and gravity. This makes it a practical unit for measuring small pressures.

In terms of SI, the Torr is not an official unit but is accepted for use with the International System of Units (SI). The name "Torr" honors the Italian scientist Evangelista Torricelli, who is known for his work on barometers and the invention of the mercury barometer.

Common conversion values

Converting Torr to other pressure units can be useful in different applications. Here are some common conversion values:

• 1 (Torr) = 0.001315789 (atm)
• 1 (Torr) = 0.00135951 (at)
• 1 (Torr) = 0.001333224 (bar)
• 1 (Torr) = 1.333224 (mbar)
• 1 (Torr) = 1333.224 (Pa)
• 1 (Torr) = 0.1333224 (kPa)
• 1 (Torr) = 133.3224 (N/m²)
• 1 (Torr) = 0.0001333224 (MPa)
• 1 (Torr) = 0.0001333224 (MN/m²)
• 1 (Torr) = 0.0000135951 (kgf/mm²)
• 1 (Torr) = 0.00135951 (kgf/cm²)
• 1 (Torr) = 13.5951 (kgf/m²)
• 1 (Torr) = 0.01933677 (psi)
• 1 (Torr) = 2.784496 (psf)
• 1 (Torr) = 0.003280839 (ftHg)
• 1 (Torr) = 0.03937007 (inHg)
• 1 (Torr) = 0.0135951 (mH₂0)
• 1 (Torr) = 1.35951 (cmH₂0)
• 1 (Torr) = 13.5951 (mmH₂0)
• 1 (Torr) = 0.04460334 (ftH₂0)
• 1 (Torr) = 0.5352401 (inH₂0)
• 1 (Torr) = 999.9998 (µmHg)
• 1 (Torr) = 0.09999998 (cmHg)
• 1 (Torr) = 0.9999998 (mmHg)

For calculations involving pressure, the relationship can be represented using scientific notation. For example, when converting from Torr to Pascal (Pa), you can express:

This makes the Torr a versatile unit, easily convertible to and from many other common pressure units.