Femtopascal Unit | All you need to know

The femtopascal (symbol: fPa) is an SI-derived unit of pressure equal to one quadrillionth (10^-15) of a pascal. It is used in scientific research, nanotechnology, vacuum science, and precision measurements involving extremely small pressure values. The femtopascal uses the SI prefix femto, representing a factor of 10^-15.

One femtopascal is equal to 0.000000000000001 pascal, 1,000 attopascals, 0.001 picopascal, 1×10^-20 bar, and 9.86923×10^-21 standard atmosphere. The femtopascal is part of the SI pressure scale for representing ultra-low pressure values.