Convert Micropascal to Attopascal (μPa to Attopascal)

Micropascal (μPa) and Attopascal (Attopascal) are both units of pressure. With the conversion form below, you can effortlessly and accurately convert micropascal to attopascal. This free online calculator tool makes it simple and easy to perform the conversion from μPa unit to the Attopascal 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 micropascal (symbol: µPa) is an SI-derived unit of pressure equal to one millionth (10^-6) of a pascal. It is commonly used in acoustics, sound pressure measurements, atmospheric science, and precision laboratory applications involving extremely small pressure variations. The micropascal uses the SI prefix micro, representing a factor of one millionth.

One micropascal is equal to 0.000001 pascal, 0.001 millipascal, 1,000 nanopascals, 1×10^-11 bar, and 9.86923×10^-12 standard atmosphere. The micropascal is particularly important in acoustics, where it is used as the reference unit for sound pressure levels.

The attopascal (symbol: aPa) is an SI-derived unit of pressure equal to one quintillionth (10^-18) of a pascal. It is an extremely small pressure unit used mainly in theoretical physics, nanotechnology, and scientific research involving ultra-low pressure measurements. The attopascal uses the SI prefix atto, representing a factor of 10^-18.

One attopascal is equal to 0.000000000000000001 pascal, 0.001 femtopascal, 0.000000001 nanopascal, 1×10^-23 bar, and 9.86923×10^-24 standard atmosphere. Although rarely used outside research, the attopascal is part of the complete SI pressure scale.