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torr to pascal – How to convert Torr to Pa
The torr is a traditional pressure unit used in vacuum science and medicine, while the pascal (Pa) is the SI base unit of pressure, widely used in physics, meteorology, and engineering. Converting torr to pascal bridges historic scientific practice with modern international standards.
What is a torr?
A torr equals 1/760 of an atmosphere, approximately 133.322 Pa. It is commonly used in vacuum technology, plasma physics, and blood gas measurements in medicine.
What is a pascal (Pa)?
A pascal is defined as one newton per square meter. It is the foundation of the SI system for pressure, though often used in larger multiples like kPa, MPa, or GPa to handle real-world values.
How to convert torr to pascal
Pascal (Pa) = Torr × 133.322
Example:
Pascal = 20 Torr × 133.322 = 2666 Pa
For quick calculations, you can use the Conversion Tools. Other handy converters, such as the Speed Converter, are also available.
Do you know?
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About torr: In medical science, arterial oxygen pressure is typically around 100 Torr — which equals 13,332 Pa.
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About pascal: A housefly landing on a table applies about 1 Pa of pressure with its tiny feet. Compare that to atmospheric pressure at sea level: 101,325 Pa.
Torricelli’s Legacy in Modern Labs
The torr is named after Evangelista Torricelli, the 17th-century Italian physicist who invented the mercury barometer. His discovery that air has measurable weight was revolutionary, laying the groundwork for pressure science.
Today, vacuum labs and medical devices still use Torr as a reference. But to align with SI standards, results are often converted to pascals. This conversion keeps Torricelli’s legacy alive while ensuring modern research remains consistent and globally understood.
One Formula, Two Eras
The formula is simple: multiply Torr by 133.322. Yet converting torr to pascal connects two scientific eras — the traditional laboratory unit and the modern SI standard. From barometers to space research, this conversion keeps the science of pressure accurate and universal.
