Convert Poise to Pounds per foot-second
Instantly convert Poise (P) to Pounds per foot-second (lb/(ft·s)) with our free online calculator.
Formula: P to lb/(ft·s) — multiply by 0.0671971
Reference Table
| Poise (P) | Pounds per foot-second (lb/(ft·s)) |
|---|---|
| 1 | 0.0671971 |
| 5 | 0.335985 |
| 10 | 0.671971 |
| 25 | 1.67993 |
| 50 | 3.35985 |
| 100 | 6.71971 |
How to Convert Poise to Pounds per foot-second
Formula
To convert Poise (P) to Pounds per foot-second (lb/(ft·s)): multiply by 0.0671971
Step-by-Step
- Start with your value in Poise (P).
- Multiply by 0.0671971 to perform the conversion.
- The result is your value expressed in Pounds per foot-second (lb/(ft·s)).
Conversion Factor
1 P = 0.0671971 lb/(ft·s)
Reverse Factor
1 lb/(ft·s) = 14.8816 P
Worked Example
Convert 25 Poise to Pounds per foot-second: 25 P = 1.67993 lb/(ft·s)
About Poise (P)
The CGS unit of dynamic viscosity, equal to exactly 0.1 Pa·s. Named after French physician Jean Léonard Marie Poiseuille, whose 1840s experimental and theoretical work on blood-flow in small tubes produced the Hagen-Poiseuille equation that underpins modern laminar-flow analysis. Although superseded by Pa·s in modern SI usage, the poise still appears in: older fluid-dynamics literature (pre-1980 US and European textbooks), geophysics and Earth-science publications for highly viscous fluids where the magnitude is convenient (asthenosphere ~10¹⁸ P, lower mantle ~10²² P, basaltic lava 10² to 10⁴ P at eruption temperature, rhyolitic lava 10⁹ to 10¹¹ P), glass-manufacturing process tables (the working point of glass = 10⁴ P; softening point = 10⁷·⁶ P; annealing point = 10¹³·² P; strain point = 10¹⁴·⁵ P), and some polymer-rheology / extrusion literature where melt viscosities of 10⁴ to 10⁷ P are common.
About Pound per foot-second (lb/(ft·s))
An imperial dynamic-viscosity unit using pound-mass per foot-second (≈ 1.4882 Pa·s per NIST SP 811 = 1,488 cP). Primarily encountered in US petroleum engineering (older API and SPE journal articles quote downhole-fluid viscosities in lb/(ft·s) alongside cP for drilling-fluid rheology and well-cementing calcs per API RP 13B), legacy ASME fluid-mechanics and heat-transfer textbooks (older editions of Streeter, McCabe-Smith-Harriott, Bird-Stewart-Lightfoot, Incropera-DeWitt), and HVAC calculations performed in fully-imperial unit systems where consistency with lb / ft / s eliminates conversion factors in Reynolds-number and Prandtl-number dimensionless-group formulas. Most modern US engineering has migrated to centipoise / Pa·s for new work; lb/(ft·s) is most useful for interpreting pre-1990s US-edition specifications, journal articles, and ASME-code background calculation derivations. Convert lb/(ft·s) to Pa·s by multiplying by 1.4882; to cP / mPa·s by multiplying by 1,488.2; to lb/(ft·hr) by multiplying by 3,600.
Quick Facts
- 1 Poise equals 0.0671971 Pounds per foot-second
- 1 Pound per foot-second equals 14.8816 Poise
- Poise is a unit of dynamic viscosity
- Pound per foot-second is a unit of dynamic viscosity
- This conversion is commonly used in lubricant selection, chemical processing, and fluid dynamics
- The Poise belongs to the metric system
- The Pound per foot-second belongs to the imperial system
Common Poise to Pound per foot-second Conversions
| Poise (P) | Pounds per foot-second (lb/(ft·s)) |
|---|---|
| 0.01 | 0.000671971 |
| 0.1 | 0.00671971 |
| 0.25 | 0.0167993 |
| 0.5 | 0.0335985 |
| 1 | 0.0671971 |
| 2 | 0.134394 |
| 3 | 0.201591 |
| 5 | 0.335985 |
| 10 | 0.671971 |
| 15 | 1.00796 |
| 20 | 1.34394 |
| 25 | 1.67993 |
| 50 | 3.35985 |
| 75 | 5.03978 |
| 100 | 6.71971 |
| 250 | 16.7993 |
| 500 | 33.5985 |
| 1000 | 67.1971 |
| 5000 | 335.985 |
| 10000 | 671.971 |
Understanding Poise
The Poise (symbol: P) is a unit of dynamic viscosity. The CGS unit of dynamic viscosity, equal to exactly 0.1 Pa·s. Named after French physician Jean Léonard Marie Poiseuille, whose 1840s experimental and theoretical work on blood-flow in small tubes produced the Hagen-Poiseuille equation that underpins modern laminar-flow analysis. Although superseded by Pa·s in modern SI usage, the poise still appears in: older fluid-dynamics literature (pre-1980 US and European textbooks), geophysics and Earth-science publications for highly viscous fluids where the magnitude is convenient (asthenosphere ~10¹⁸ P, lower mantle ~10²² P, basaltic lava 10² to 10⁴ P at eruption temperature, rhyolitic lava 10⁹ to 10¹¹ P), glass-manufacturing process tables (the working point of glass = 10⁴ P; softening point = 10⁷·⁶ P; annealing point = 10¹³·² P; strain point = 10¹⁴·⁵ P), and some polymer-rheology / extrusion literature where melt viscosities of 10⁴ to 10⁷ P are common.
It belongs to the metric measurement system.
Poise are commonly used in lubricant selection, chemical processing, and fluid dynamics.
Understanding Pounds per foot-second
The Pound per foot-second (symbol: lb/(ft·s)) is a unit of dynamic viscosity. An imperial dynamic-viscosity unit using pound-mass per foot-second (≈ 1.4882 Pa·s per NIST SP 811 = 1,488 cP). Primarily encountered in US petroleum engineering (older API and SPE journal articles quote downhole-fluid viscosities in lb/(ft·s) alongside cP for drilling-fluid rheology and well-cementing calcs per API RP 13B), legacy ASME fluid-mechanics and heat-transfer textbooks (older editions of Streeter, McCabe-Smith-Harriott, Bird-Stewart-Lightfoot, Incropera-DeWitt), and HVAC calculations performed in fully-imperial unit systems where consistency with lb / ft / s eliminates conversion factors in Reynolds-number and Prandtl-number dimensionless-group formulas. Most modern US engineering has migrated to centipoise / Pa·s for new work; lb/(ft·s) is most useful for interpreting pre-1990s US-edition specifications, journal articles, and ASME-code background calculation derivations. Convert lb/(ft·s) to Pa·s by multiplying by 1.4882; to cP / mPa·s by multiplying by 1,488.2; to lb/(ft·hr) by multiplying by 3,600.
It belongs to the imperial measurement system.
Pounds per foot-second are commonly used in lubricant selection, chemical processing, and fluid dynamics.
Why Convert Poise to Pounds per foot-second?
Converting between Poise and Pounds per foot-second is a frequent requirement for engineers, scientists, and students working with dynamic viscosity values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate dynamic viscosity conversion is essential.
Frequently Asked Questions
How do I convert Poise to Pounds per foot-second?
The CGS unit of dynamic viscosity, equal to exactly 0. To convert Poise to Pounds per foot-second, multiply by 0.0671971. For example, 25 P equals 1.67993 lb/(ft·s).
How many Pounds per foot-second are in 1 Poise?
There are 0.0671971 Pounds per foot-second in 1 Poise.
How many Poise are in 1 Pound per foot-second?
There are 14.8816 Poise in 1 Pound per foot-second.
What is the formula for Poise to Pound per foot-second conversion?
The formula is: multiply by 0.0671971. This means 1 P = 0.0671971 lb/(ft·s).
Is a Poise bigger than a Pound per foot-second?
Yes. One Poise is larger than one Pound per foot-second because 1 P equals 0.0671971 lb/(ft·s), which is less than 1.
When do you need to convert between Poise and Pounds per foot-second?
An imperial dynamic-viscosity unit using pound-mass per foot-second (≈ 1. Poise and Pound per foot-second are both dynamic viscosity units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.