pascal second [Pa*s] Unit Converter

Definition of pascal second [Pa*s] unit

The pascal second (Pa·s) is the SI derived unit of dynamic viscosity. It quantifies a fluid’s resistance to shear flow: a one-pascal shear stress produces a shear rate of one reciprocal second.

History of pascal second [Pa*s] unit

The pascal second emerged from the International System of Units (SI), adopted in 1960, which named the pascal after French mathematician and physicist Blaise Pascal. Before SI standardization, viscosity was often expressed in poise, defined through the centimetre-gram-second system. The SI replaced that convention with the pascal second, coherently linking viscosity to the pascal, metre, and second. Although the poise and centipoise remain common in some technical contexts, the pascal second is the internationally recognized SI unit for dynamic viscosity in scientific reporting.

Applications of pascal second [Pa*s] unit

The pascal second is used to report the viscosity of highly resistant fluids, including heavy oils, asphalt binders, polymer solutions, paints, and some industrial lubricants. Engineers apply it when designing pumps, pipelines, bearings, and processing equipment. For less viscous liquids, values are commonly given in millipascal seconds, where 1 Pa·s equals 1,000 mPa·s.

Complete list of pascal second [Pa*s] unit conversion

• kilogram-force second/square meter = 9.80665 pascal second [Pa*s]
• newton second/square meter = 1 pascal second [Pa*s]
• millinewton second/sq. meter = 0.001 pascal second [Pa*s]
• dyne second/sq. centimeter = 0.1 pascal second [Pa*s]
• poise [P] = 0.1 pascal second [Pa*s]
• exapoise [EP] = 1.0E+17 pascal second [Pa*s]
• petapoise [PP] = 1.0E+14 pascal second [Pa*s]
• terapoise [TP] = 100000000000 pascal second [Pa*s]
• gigapoise [GP] = 100000000 pascal second [Pa*s]
• megapoise [MP] = 100000 pascal second [Pa*s]
• kilopoise [kP] = 100 pascal second [Pa*s]
• hectopoise [hP] = 10 pascal second [Pa*s]
• dekapoise [daP] = 1 pascal second [Pa*s]
• decipoise [dP] = 0.01 pascal second [Pa*s]
• centipoise [cP] = 0.001 pascal second [Pa*s]
• millipoise [mP] = 0.0001 pascal second [Pa*s]
• micropoise [µP] = 1.0E-7 pascal second [Pa*s]
• nanopoise [nP] = 1.0E-10 pascal second [Pa*s]
• picopoise [pP] = 1.0E-13 pascal second [Pa*s]
• femtopoise [fP] = 1.0E-16 pascal second [Pa*s]
• attopoise [aP] = 1.0E-19 pascal second [Pa*s]
• pound-force second/sq. inch = 6894.7572931684 pascal second [Pa*s]
• pound-force second/sq. foot = 47.880258980336 pascal second [Pa*s]
• poundal second/square foot = 1.4881639435696 pascal second [Pa*s]
• gram/centimeter/second = 0.1 pascal second [Pa*s]
• slug/foot/second = 47.880258980315 pascal second [Pa*s]
• pound/foot/second = 1.4881639435696 pascal second [Pa*s]
• pound/foot/hour [lb/(ft*h)] = 0.00041337887321376 pascal second [Pa*s]