Convert Standard Atmosphere to Petapascal (atm to Petapascal)

Standard Atmosphere (atm) and Petapascal (Petapascal) are both units of pressure. With the conversion form below, you can effortlessly and accurately convert standard atmosphere to petapascal. This free online calculator tool makes it simple and easy to perform the conversion from atm unit to the Petapascal unit.

Pressure is the force applied perpendicular to a surface per unit area: P = F / A. The SI unit is the pascal (Pa), equal to one newton per square metre (1 Pa = 1 N/m²). Practical applications use larger units: the bar (1 bar = 100,000 Pa, close to standard atmospheric pressure), atmosphere (atm) (1 atm = 101,325 Pa), and psi (pounds per square inch, used in the US for tire and gas pressures). Blood pressure is measured in mmHg (millimetres of mercury), also called torr.

The standard atmosphere (symbol: atm) is a non-SI unit of pressure defined as exactly 101,325 pascals. It represents the average atmospheric pressure at sea level under standard conditions and is widely used in chemistry, physics, meteorology, and engineering. The standard atmosphere provides a convenient reference for pressure measurements and scientific calculations. Additional information is available in the standard atmosphere reference.

One standard atmosphere is equal to 101,325 pascals, 1.01325 bars, 101.325 kilopascals, 14.6959 pounds per square inch, and 760 millimeters of mercury. The standard atmosphere is one of the most important reference units in science and engineering.

The petapascal (symbol: PPa) is an SI-derived unit of pressure equal to one quadrillion (10¹⁵) pascals. It is an extremely large pressure unit used primarily in astrophysics, geophysics, high-energy physics, and theoretical research involving exceptionally high pressures. The petapascal uses the SI prefix peta, representing a factor of 10¹⁵.

One petapascal is equal to 1,000 terapascals, 1,000,000 gigapascals, 1,000,000,000 megapascals, 10,000,000,000 bars, and 1×10¹⁵ pascals. Although rarely encountered outside advanced scientific research, the petapascal is part of the complete SI pressure scale.