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 = lb/(ft·s) × 1488
Multiply any lb/(ft·s) value by 1488 to get Millipascal-second.
Reverse: lb/(ft·s) = Millipascal-second × 0.000672
Water reference (20°C): 0.0006733 lb/(ft·s) = 1.002 mPa·s
Values at ~20°C unless noted. Factor: 1 lb/(ft·s) = 1488 mPa·s
| lb/(ft·s) (lb/(ft·s)) | Millipascal-second (mPa·s) | Fluid |
|---|---|---|
| 1.210e-05 lb/(ft·s) | 0.018 mPa·s | Air (20°C) |
| 0.0006733 lb/(ft·s) | 1.002 mPa·s | Water (20°C) |
| 0.0008064 lb/(ft·s) | 1.2 mPa·s | Ethanol |
| 0.002352 lb/(ft·s) | 3.5 mPa·s | Blood (37°C) |
| 0.04368 lb/(ft·s) | 65 mPa·s | SAE 10W motor oil |
| 0.05645 lb/(ft·s) | 84 mPa·s | Olive oil |
| 0.1344 lb/(ft·s) | 200 mPa·s | Maple syrup |
| 0.2016 lb/(ft·s) | 300 mPa·s | SAE 30 motor oil |
| 3.36 lb/(ft·s) | 5000 mPa·s | Honey |
| 33.6 lb/(ft·s) | 5e+04 mPa·s | Ketchup |
| 67.2 lb/(ft·s) | 1e+05 mPa·s | Molten glass (700°C) |
| 168 lb/(ft·s) | 2.5e+05 mPa·s | Peanut butter |
| 2.016e+04 lb/(ft·s) | 3e+07 mPa·s | Tar (room temp) |
| 1.546e+08 lb/(ft·s) | 2.300e+11 mPa·s | Pitch (20°C) |
1 lb/(ft·s) = 1488 mPa·s.
Water at 20°C ≈ 1 cP = 1 mPa·s = 0.001 Pa·s = 0.01 P. Use as reference.
Multiply result by 0.000672 to recover the original lb/(ft·s) value.
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.
Pound per foot per second (lb/(ft·s)) is the Imperial dynamic viscosity unit, equal to 1.48816 Pa·s. It is rarely used in modern practice but appears in older US engineering handbooks and some aerospace fluid specifications in the foot-pound-second system.
Water at 20°C ≈ 0.000672 lb/(ft·s). Air at 20°C ≈ 1.21×10⁻⁵ lb/(ft·s). The poundal-second per square foot (pdl·s/ft²) is sometimes confused with lb/(ft·s) — they differ by a factor of 32.174 (g). Most US engineering now uses cP even in Imperial contexts.
Interesting fact: Viscosity in Imperial units involves multiple conventions that confuse even experienced engineers. The slug/(ft·s) = 47.88 Pa·s is the viscosity unit consistent with pound-force; lb/(ft·s) uses pound-mass. These give numerically different values for the same fluid.
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 lb/(ft·s) = 1488 mPa·s. Reverse: 1 mPa·s = 0.000672 lb/(ft·s).
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.