Pressure Converter
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).
Atmosphere (atm)
Definition: The standard atmosphere (symbol: atm) is a unit of pressure defined as being equal to 101,325 pascals. It represents the average atmospheric pressure at sea level.
History/origin: Originally defined as the pressure exerted by a 760 mm column of mercury at 0°C. It was later standardized to a fixed Pascal value for scientific precision.
Current use: Mainly used in chemistry, physics, and aeronautics to describe environmental pressure or gas storage tank pressures.
Pascal to Atmosphere (atm) Conversion Table
| Pascal [pa] | Atmosphere (atm) [atm] |
|---|---|
| 0.01 pa | 0.0000001 atm |
| 0.1 pa | 0.00000099 atm |
| 1 pa | 0.00000987 atm |
| 2 pa | 0.00001974 atm |
| 3 pa | 0.00002961 atm |
| 5 pa | 0.00004935 atm |
| 10 pa | 0.00009869 atm |
| 20 pa | 0.00019738 atm |
| 50 pa | 0.00049346 atm |
| 100 pa | 0.00098692 atm |
| 1000 pa | 0.00986923 atm |
How to Convert Pascal to Atmosphere (atm)
1 pa = 0.00000987 atm
1 atm = 101325 pa
Example: convert 15 pa to atm:
15 pa = 15 × 0.00000987 atm = 0.00014804 atm
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.
- At sea level, the Earth's atmosphere exerts a pressure of exactly 1 atm on everything. As you go higher up a mountain, this pressure decreases, which is why your ears might "pop".