Pascal
Definition: The pascal (symbol: Pa) is the SI derived unit of pressure. It is defined as one newton per square meter.
History/origin: Named after the French polymath Blaise Pascal, who made important contributions to hydrodynamics and hydrostatics. It was officially adopted in 1971.
Current use: Pascals are used in science and high-end engineering. Because it is a small unit, it is more commonly used as Kilopascals (kPa) or Megapascals (MPa).
Torr
Definition: The torr (symbol: Torr) is a unit of pressure based on an absolute scale, now defined as exactly 1/760 of a standard atmosphere.
History/origin: Named after Evangelista Torricelli, an Italian physicist and mathematician who discovered the principle of the barometer in 1643.
Current use: The torr is frequently used in high-vacuum physics and engineering to measure very low pressures.
Pascal to Torr Conversion Table
| Pascal [pa] | Torr [torr] |
|---|---|
| 0.01 pa | 0.00007501 torr |
| 0.1 pa | 0.00075006 torr |
| 1 pa | 0.00750062 torr |
| 2 pa | 0.01500123 torr |
| 3 pa | 0.02250185 torr |
| 5 pa | 0.03750308 torr |
| 10 pa | 0.07500617 torr |
| 20 pa | 0.15001234 torr |
| 50 pa | 0.37503084 torr |
| 100 pa | 0.75006169 torr |
| 1000 pa | 7.50061685 torr |
How to Convert Pascal to Torr
1 pa = 0.00750062 torr
1 torr = 133.322368 pa
Example: convert 15 pa to torr:
15 pa = 15 × 0.00750062 torr = 0.11250925 torr
Did You Know?
- The Pascal is a very small unit. The pressure of a single sheet of paper lying flat on a table is approximately 1 Pascal.