Convert Pounds per foot-second to Poise
Instantly convert Pounds per foot-second (lb/(ft·s)) to Poise (P) with our free online calculator.
Formula: lb/(ft·s) to P — multiply by 14.8816
Reference Table
| Pounds per foot-second (lb/(ft·s)) | Poise (P) |
|---|---|
| 1 | 14.8816 |
| 5 | 74.408 |
| 10 | 148.816 |
| 25 | 372.04 |
| 50 | 744.08 |
| 100 | 1488.16 |
How to Convert Pounds per foot-second to Poise
Formula
To convert Pounds per foot-second (lb/(ft·s)) to Poise (P): multiply by 14.8816
Step-by-Step
- Start with your value in Pounds per foot-second (lb/(ft·s)).
- Multiply by 14.8816 to perform the conversion.
- The result is your value expressed in Poise (P).
Conversion Factor
1 lb/(ft·s) = 14.8816 P
Reverse Factor
1 P = 0.0671971 lb/(ft·s)
Worked Example
Convert 25 Pounds per foot-second to Poise: 25 lb/(ft·s) = 372.04 P
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.
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 Although superseded by Pa·s in modern SI usage, the poise still appears in: older fluid-dynamics literature (pre-1980 US and European textbooks), geophysics and Earth-science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.
Quick Facts
- 1 Pound per foot-second equals 14.8816 Poise
- 1 Poise equals 0.0671971 Pounds per foot-second
- Pound per foot-second is a unit of dynamic viscosity
- Poise is a unit of dynamic viscosity
- This conversion is commonly used in lubricant selection, chemical processing, and fluid dynamics
- The Pound per foot-second belongs to the imperial system
- The Poise belongs to the metric system
Common Pound per foot-second to Poise Conversions
| Pounds per foot-second (lb/(ft·s)) | Poise (P) |
|---|---|
| 0.01 | 0.148816 |
| 0.1 | 1.48816 |
| 0.25 | 3.7204 |
| 0.5 | 7.4408 |
| 1 | 14.8816 |
| 2 | 29.7632 |
| 3 | 44.6448 |
| 5 | 74.408 |
| 10 | 148.816 |
| 15 | 223.224 |
| 20 | 297.632 |
| 25 | 372.04 |
| 50 | 744.08 |
| 75 | 1116.12 |
| 100 | 1488.16 |
| 250 | 3720.4 |
| 500 | 7440.8 |
| 1000 | 14881.6 |
| 5000 | 74408 |
| 10000 | 148816 |
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.
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.
Why Convert Pounds per foot-second to Poise?
Converting between Pounds per foot-second and Poise 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 Pounds per foot-second to Poise?
An imperial dynamic-viscosity unit using pound-mass per foot-second (≈ 1. To convert Pounds per foot-second to Poise, multiply by 14.8816. For example, 25 lb/(ft·s) equals 372.04 P.
How many Poise are in 1 Pound per foot-second?
There are 14.8816 Poise in 1 Pound per foot-second.
How many Pounds per foot-second are in 1 Poise?
There are 0.0671971 Pounds per foot-second in 1 Poise.
What is the formula for Pound per foot-second to Poise conversion?
The formula is: multiply by 14.8816. This means 1 lb/(ft·s) = 14.8816 P.
Is a Pound per foot-second bigger than a Poise?
No. One Pound per foot-second is smaller than one Poise because 1 lb/(ft·s) equals 14.8816 P, which is greater than 1.
When do you need to convert between Pounds per foot-second and Poise?
The CGS unit of dynamic viscosity, equal to exactly 0. Pound per foot-second and Poise 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.