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).
Bar
Definition: The bar is a metric unit of pressure, but not part of the SI system. It is defined as exactly 100,000 pascals, which is slightly less than the average atmospheric pressure at sea level.
History/origin: Introduced by the Norwegian meteorologist Vilhelm Bjerknes in 1909. The word "bar" comes from the Greek word "baros," meaning weight.
Current use: Widely used in meteorology, oceanography, and industrial vacuum systems. Many scuba diving pressure gauges are calibrated in bar.
Pascal to Bar Conversion Table
| Pascal [pa] | Bar [bar] |
|---|---|
| 0.01 pa | 0.0000001 bar |
| 0.1 pa | 0.000001 bar |
| 1 pa | 0.00001 bar |
| 2 pa | 0.00002 bar |
| 3 pa | 0.00003 bar |
| 5 pa | 0.00005 bar |
| 10 pa | 0.0001 bar |
| 20 pa | 0.0002 bar |
| 50 pa | 0.0005 bar |
| 100 pa | 0.001 bar |
| 1000 pa | 0.01 bar |
How to Convert Pascal to Bar
1 pa = 0.00001 bar
1 bar = 100000 pa
Example: convert 15 pa to bar:
15 pa = 15 × 0.00001 bar = 0.00015 bar
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.
- Weather forecasters often use "millibars" to track storms. A significant drop in barometric pressure usually indicates that rain or a storm is coming.