Atmosphere to Pascal Converter
Convert atmosphere pascal between units instantly. Includes conversion tables, common equivalents, and calculation formulas.
Formula
Pa = atm x 101325 | 1 bar = 100000 Pa | 1 PSI = 6894.76 Pa
One standard atmosphere equals exactly 101,325 pascals. All pressure conversions use the pascal as the base SI unit. Key relationships: 1 bar = 100,000 Pa, 1 PSI = 6,894.76 Pa, 1 mmHg (torr) = 133.322 Pa, 1 inHg = 3,386.39 Pa. The pascal is defined as one newton per square meter.
Worked Examples
Example 1: Tire Pressure Conversion
Problem: Convert 32 PSI tire pressure to pascals and bar.
Solution: Pascals: 32 x 6,894.76 = 220,632.32 Pa\nKilopascals: 220,632.32 / 1000 = 220.63 kPa\nBar: 220,632.32 / 100,000 = 2.2063 bar\nAtmospheres: 220,632.32 / 101,325 = 2.178 atm
Result: 32 PSI = 220,632 Pa = 2.21 bar
Example 2: Weather Pressure
Problem: A barometer reads 760 mmHg. What is this in pascals and atmospheres?
Solution: Pascals: 760 x 133.322 = 101,324.72 Pa\nAtmospheres: 101,324.72 / 101,325 = 1.0000 atm\nBar: 101,324.72 / 100,000 = 1.0132 bar
Result: 760 mmHg = 101,325 Pa = 1.0 atm (standard pressure)
Frequently Asked Questions
How many pascals are in one atmosphere?
One standard atmosphere (atm) equals exactly 101,325 pascals (Pa) or 101.325 kilopascals (kPa). This value was defined by the International Union of Pure and Applied Chemistry (IUPAC) based on the average atmospheric pressure at sea level and 15 degrees Celsius. The pascal is the SI unit of pressure defined as one newton per square meter. Standard atmospheric pressure is used as a reference in chemistry, aviation, and meteorology.
What is a pascal and what is it used for?
A pascal (Pa) is the SI unit of pressure equal to one newton of force per square meter of area. Named after French mathematician Blaise Pascal, it is used in engineering, physics, meteorology, and material science. Because one pascal is a very small pressure (about 0.000145 psi), kilopascals (kPa) and megapascals (MPa) are more commonly used in practice. Tire pressure, blood pressure, and weather reports often use related units like bar, mmHg, or millibar.
Is my data stored or sent to a server?
No. All calculations run entirely in your browser using JavaScript. No data you enter is ever transmitted to any server or stored anywhere. Your inputs remain completely private.
What formula does Atmosphere to Pascal Converter use?
The formula used is described in the Formula section on this page. It is based on widely accepted standards in the relevant field. If you need a specific reference or citation, the References section provides links to authoritative sources.
Can I share or bookmark my calculation?
You can bookmark the calculator page in your browser. Many calculators also display a shareable result summary you can copy. The page URL stays the same so returning to it will bring you back to the same tool.
Does Atmosphere to Pascal Converter work offline?
Once the page is loaded, the calculation logic runs entirely in your browser. If you have already opened the page, most calculators will continue to work even if your internet connection is lost, since no server requests are needed for computation.