Convert dynamic viscosity units — Pascal-second, Poise, centipoise, lb/(ft·s) and more.
| Unit | Name | Value |
|---|---|---|
| Pa·s | Pascal-second | 0.001 |
| P | Poise | 0.01 |
| lb/(ft·s) | Pound/(Foot·Second) | 0.00067197076 |
| kg/(m·s) | Kilogram/(Meter·Second) | 0.001 |
| mPa·s | Millipascal-second | 1 |
Formula: Millipascal-second = Pascal-second × 1000
Multiply any Pascal-second value by 1000 to get Millipascal-second.
Reverse: Pascal-second = Millipascal-second × 0.001
Water reference (20°C): 0.001002 Pa·s = 1.002 mPa·s
Values at ~20°C unless noted. Factor: 1 Pa·s = 1000 mPa·s
| Pascal-second (Pa·s) | Millipascal-second (mPa·s) | Fluid |
|---|---|---|
| 1.800e-05 Pa·s | 0.018 mPa·s | Air (20°C) |
| 0.001002 Pa·s | 1.002 mPa·s | Water (20°C) |
| 0.0012 Pa·s | 1.2 mPa·s | Ethanol |
| 0.0035 Pa·s | 3.5 mPa·s | Blood (37°C) |
| 0.065 Pa·s | 65 mPa·s | SAE 10W motor oil |
| 0.084 Pa·s | 84 mPa·s | Olive oil |
| 0.2 Pa·s | 200 mPa·s | Maple syrup |
| 0.3 Pa·s | 300 mPa·s | SAE 30 motor oil |
| 5 Pa·s | 5000 mPa·s | Honey |
| 50 Pa·s | 5e+04 mPa·s | Ketchup |
| 100 Pa·s | 1e+05 mPa·s | Molten glass (700°C) |
| 250 Pa·s | 2.5e+05 mPa·s | Peanut butter |
| 3e+04 Pa·s | 3e+07 mPa·s | Tar (room temp) |
| 2.3e+08 Pa·s | 2.300e+11 mPa·s | Pitch (20°C) |
Pa·s × 1,000 = mPa·s.
0.001 Pa·s = 1 mPa·s = 1 cP (water). 1 Pa·s = 1,000 mPa·s.
mPa·s ÷ 1,000 = Pa·s.
Specifies oil viscosity in cP or mPa·s for formulation and quality control of lubricants.
Uses Pa·s and cP for pipeline flow calculations, pump design, and mixing operations.
Measures sauce, syrup, and dough viscosity in cP for texture optimization and process control.
Controls drug formulation viscosity in mPa·s for injectables, topical creams, and oral suspensions.
Specifies paint, ink, and adhesive viscosity in cP for application equipment compatibility.
Characterizes polymer melt viscosity in Pa·s for extrusion and injection molding process design.
The pascal-second (Pa·s) is the SI unit of dynamic viscosity, defined as the force per unit area (Pa) times time (s). It equals 1 N·s/m² = 1 kg/(m·s) = 10 Poise. The unit was formalized with the SI system in 1960 and replaced the Poise as the standard.
Pa·s values: water at 20°C = 0.001 Pa·s; honey ≈ 2–10 Pa·s; peanut butter ≈ 250 Pa·s; molten glass ≈ 10,000 Pa·s; pitch (room temperature) ≈ 100 billion Pa·s. In the Pa·s system, water is conveniently close to 0.001 Pa·s = 1 mPa·s = 1 cP.
Interesting fact: The famous pitch drop experiment at the University of Queensland has been running since 1927. Pitch (a form of bitumen) has a viscosity of about 100 billion Pa·s — it drops at a rate of approximately one drop per decade, with only 9 drops having fallen in nearly 100 years.
Millipascal-second (mPa·s) equals exactly 1 centipoise (cP) = 0.001 Pa·s. It is the preferred SI notation for the centipoise, used in pharmaceutical, food, and chemical industries that require SI-compliant units while retaining the convenient water = 1 value.
mPa·s = cP numerically, making conversion trivial. EU pharmacopoeias and food regulations increasingly specify viscosity in mPa·s. Pharmaceutical injections must be within specific mPa·s ranges for safe administration. Many modern viscometer readouts display in mPa·s.
Interesting fact: The equivalence cP = mPa·s is exact by definition. The International Union of Pure and Applied Chemistry (IUPAC) recommends mPa·s as the preferred SI expression of centipoise — allowing modern data tables to be SI-compliant while remaining numerically compatible with decades of cP data.
Dynamic viscosity measures a fluid's resistance to flow. The SI unit is Pa·s (= kg/(m·s)); cP and mPa·s are numerically identical and most widely used; P (Poise) is the CGS unit. Key anchor: water at 20°C ≈ 1 cP = 1 mPa·s = 0.001 Pa·s = 0.01 P.
Exact factor: 1 Pa·s = 1000 mPa·s. Reverse: 1 mPa·s = 0.001 Pa·s.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.