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Pressure Calculations

For making conversions please select the metric that you convert from, the value and the metric that you convert to ordinarily.


General Informations About Pressure Metrics

  • Pascal: Most Known pressure metric that took it's name from a french mathematician, philosopher and physicist Blaise Pascal. It's most widely used on engineering and physics.
  • Bar: One of the most known pressure metrics, it took it's name from a greek word "baros" which means "weight". It found by an english physicist William Napier Shaw in 1909.
  • Torr: One of the oldest pressure metrics ever found. It found by an italian physicist Evangelista Torricelli in 1643. It's used on especially measuring the pressure of vacuum tubes. It was defined relative to pressure of mercury.
  • Atmosphere: Other oldest pressure metric, it also found by Evangelista Torricelli in 1643 by invention of barometer. It's widely used on Science and also meteorology. The difference between two of them is atmosphere defined relative to atmospheric pressure.
  • Pound Per Square Inch, Pound Per Square Foot: One of the oldest pressure metrics found by english scientists Robert Boyle and Robert Hook in seventeenth century. It has wide usage on british heritage countries.