Centipoise to Pascal-Second Converter

How it is calculated

Both units measure dynamic viscosity, and the conversion is a fixed multiplication: Pa·s = cP × 0.001 and poise = cP × 0.01. One centipoise equals one millipascal-second (1 cP = 1 mPa·s), so the number stays the same if you read it in mPa·s. Both results are shown with four decimals, so a viscosity below 0.05 cP gives 0.0000 Pa·s even though it is not zero. A negative entry returns no result, because a real viscosity cannot be negative; zero is accepted. Only dynamic viscosity is converted: kinematic viscosity (centistokes, mm²/s) also depends on the fluid density and must not be entered here.

Common mistakes

• Entering kinematic viscosity (centistokes) as centipoise. They are different quantities, and converting between them needs the fluid's density.
• Dividing instead of multiplying: converting cP to Pa·s makes the number 1000 times smaller, not larger.
• Mixing up poise and centipoise. 1 poise is 100 cP, so a datasheet value given in P must be multiplied by 100 before you enter it here.
• Reading a viscosity measured at one temperature as if it held at another. Viscosity changes strongly with temperature, so keep the test temperature with the number.
• Using one value for a fluid whose viscosity depends on shear rate (paints, polymers); the reading holds only for the conditions it was measured under.