Torr to PSI Converter
Convert pressure values from Torr (mmHg) to Pounds per Square Inch (PSI) instantly
Conversion Formula: 1 Torr = 0.0193368 PSI
Reverse Conversion: 1 PSI = 51.7149 Torr
Common Torr to PSI Conversion Values
| Torr | PSI | Common Application |
|---|---|---|
| 1 Torr | 0.0193368 PSI | Laboratory vacuum measurements |
| 10 Torr | 0.193368 PSI | Low vacuum systems |
| 50 Torr | 0.966839 PSI | Medium vacuum processes |
| 100 Torr | 1.933677 PSI | Industrial vacuum applications |
| 400 Torr | 7.734710 PSI | Partial vacuum systems |
| 760 Torr | 14.695949 PSI | Standard atmospheric pressure at sea level |
| 1000 Torr | 19.336775 PSI | Slightly above atmospheric pressure |
| 1500 Torr | 29.005162 PSI | Low pressure industrial systems |
| 2000 Torr | 38.673549 PSI | Medium pressure applications |
| 5000 Torr | 96.683874 PSI | High pressure industrial processes |
Understanding Torr to PSI Conversion
What are Torr and PSI?
Torr (symbol: Torr) is a unit of pressure named after Evangelista Torricelli, an Italian physicist and mathematician. One Torr is defined as 1/760 of standard atmospheric pressure, which is approximately equal to the pressure exerted by a column of mercury that is 1 millimeter high. For this reason, Torr is often used interchangeably with mmHg (millimeters of mercury).
PSI (Pounds per Square Inch) is a unit of pressure that represents the force in pounds applied to one square inch of area. It is commonly used in the United States and the United Kingdom for various pressure measurements, including tire pressure, hydraulic systems, and industrial applications.
Conversion Formula
The mathematical relationship between Torr and PSI is:
Or conversely:
Derivation of the Conversion Factor
This conversion factor is derived from the relationship between these units and the pascal (Pa), which is the SI unit of pressure:
- 1 Torr = 133.322 pascals (Pa)
- 1 PSI = 6,894.76 pascals (Pa)
Therefore, to convert from Torr to PSI:
Practical Applications
Understanding the conversion between Torr and PSI is important in various scientific and industrial contexts:
- Laboratory Equipment: Many scientific instruments measure pressure in Torr, especially in vacuum applications.
- Medical Devices: Blood pressure measurements are often recorded in mmHg (equivalent to Torr).
- Industrial Processes: Manufacturing processes may require pressure specifications in different units.
- Engineering: Engineers may need to convert between pressure units when working with international specifications.
Historical Context
The Torr unit was named after Evangelista Torricelli, who invented the mercury barometer in 1643. The PSI unit evolved from the Imperial system of measurement. Both units continue to be widely used in specific applications despite the push toward standardization with SI units (pascals).