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Pounds/foot/hour to Poise Converter (lb/(ft·h) to P)

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Live Conversion • ISO 80000-4:2019 Certified
1 Pound/foot/hour = 0.0041337887 Poise
1 lb/(ft·h) = 0.00413379 P • 1 P = 241.908831 lb/(ft·h)
Pound/foot/hour to Poise: One Pound/foot/hour is equal to 0.0041337887 Poise.
Certified Authority Value
0.00413379
P
Exact: 1 P ≡ 241.9088310502 lb/(ft·h)
lb/(ft·h)
lb/(ft·h)
Swap to Poise to Pound/foot/hour
Swap to Poise to Pound/foot/hour
P
P 0.0041337887
Quick Values:
Conversion Formula
To convert Pound/foot/hour to Poise, multiply by 0.0041337887
lb/(ft·h) × 0.0041337887 = P

Calculation: 1 lb/(ft·h) × 0.0041337887 = 0.0041337887 P

Common Pound/foot/hour to Poise Calculations

Quick-lookup reference table showing calculated equivalents for standard increments between Pound/foot/hour (lb/(ft·h)) and Poise (P).

Tap any row to calculate
Pound/foot/hour to Poise: Primary Direct Table (15 Steps)
Pound/foot/hour to Poise Conversion Reference Table
Conversion & Equivalent Value Scientific Notation
0.001 lb/(ft·h) 4.133789 × 10⁻⁶ P 4.134 × 10⁻⁶
0.01 lb/(ft·h) 4.133789 × 10⁻⁵ P 4.134 × 10⁻⁵
0.1 lb/(ft·h) 0.000413379 P 4.134 × 10⁻⁴
0.5 lb/(ft·h) 0.00206689 P 2.067 × 10⁻³
1 lb/(ft·h) 0.00413379 P 4.134 × 10⁻³
2 lb/(ft·h) 0.00826758 P 8.268 × 10⁻³
5 lb/(ft·h) 0.0206689 P 2.067 × 10⁻²
10 lb/(ft·h) 0.0413379 P 4.134 × 10⁻²
20 lb/(ft·h) 0.0826758 P 8.268 × 10⁻²
25 lb/(ft·h) 0.103345 P 1.033 × 10⁻¹
50 lb/(ft·h) 0.206689 P 2.067 × 10⁻¹
100 lb/(ft·h) 0.413379 P 4.134 × 10⁻¹
250 lb/(ft·h) 1.033447 P 1.033 × 10⁰
500 lb/(ft·h) 2.066894 P 2.067 × 10⁰
1000 lb/(ft·h) 4.133789 P 4.134 × 10⁰
Poise to Pound/foot/hour: Reciprocal Summary
Poise to Pound/foot/hour Conversion Reference Table
Reciprocal & Equivalent Value Scientific Notation
1 P 241.908831 lb/(ft·h) 2.419 × 10²
5 P 1209.544155 lb/(ft·h) 1.21 × 10³
10 P 2419.088311 lb/(ft·h) 2.419 × 10³
50 P 12095.441553 lb/(ft·h) 1.21 × 10⁴
100 P 24190.883105 lb/(ft·h) 2.419 × 10⁴
View Complete 15-Row Poise to Pound/foot/hour Table

Real-World Context & Everyday Benchmarks

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To help contextualize these units in everyday life, science, and engineering, here are verified real-world reference points for Pound/foot/hour (lb/(ft·h)) and Poise (P):

Pound/foot/hour References:

  • Chemical engineering pipe fluid friction calculations for oil 200 lb/(ft·h)

Poise References:

  • Pure liquid water dynamic viscosity at room temperature (0.01 P / 1 cP) 0.01 P
  • Commercial culinary golden pancake syrup dynamic viscosity 25 P

Tap any benchmark above to automatically calculate its exact equivalent in Poise.

ISQ Dimension: [M L⁻¹ T⁻¹] Coherent SI Unit: pascal second (Pa·s) Fluid Dynamics & Rheology

How to Convert Pound/foot/hour to Poise

Converting Pound/foot/hour (lb/(ft·h)) to Poise (P) is a core calculation in Dynamic Viscosity, which quantifies a fluid's internal tangential resistance to shear deformation and laminar flow. This calculation bridges modern MKSA metric standards with the historical Gaussian centimetre-gram-second (CGS) electrostatic and electromagnetic framework. In CGS systems, electromagnetic units (such as statvolts, abvolts, dynes, ergs, and gauss) are formulated directly from mechanical dimensions, with electrostatic-to-electromagnetic relations tied to the speed of light in vacuum (c ≈ 2.99792458 × 1010 cm/s). Exactly 1 Pound/foot/hour translates to 0.00413379 Poise (1 P = 241.908831 lb/(ft·h)).

Direct Factor1 lb/(ft·h) = 0.00413379 P
Inverse Ratio1 P = 241.908831 lb/(ft·h)
Conversion ScaleSI to CGS Gaussian / ESU / EMU Bridge
First-Principles SI Derivation ProofNIST SP 811 / ISO 80000 Compliance

Mathematical Conversion Derivation via Coherent SI Base Unit

Under the International System of Quantities (ISQ), dimensional conversion between non-SI units is rigorously resolved by bridging through the coherent SI base unit (pascal second (Pa·s)) without arbitrary rounding:

Vtarget=Vsource×(ksource→SIktarget→SI)V_{\text{target}} = V_{\text{source}} \times \left( \frac{k_{\text{source} \to \text{SI}}}{k_{\text{target} \to \text{SI}}} \right)
Universal Dimensional Conversion Law (ISO 80000 / NIST SP 811)
1. Source SI Bridge (ksource):1 lb/(ft·h) = 0.000413379 pascal second (Pa·s)
2. Target SI Bridge (ktarget):1 P = 0.1 pascal second (Pa·s)
Step-by-step substitution for Pound/foot/hour → Poise:V(P) = V(lb/(ft·h)) × ( 0.000413379 / 0.1 ) = V(lb/(ft·h)) × 0.00413379
Mathematical FormulaValue in Poise = Value in Pound/foot/hour × 0.0041337887Direct computational formula applied for standard conversion.
Worked Example

Converting 15 lb/(ft·h) yields an exact output of 0.0620068 P in Poise. Under higher industrial throughput, 480 lb/(ft·h) translates to 1.984219 P.

Inverse check: 1 P = 241.908831 lb/(ft·h).

Understanding Pound/foot/hour and Poise

Pound/foot/hour

lb/(ft·h)
Imperial / US

A Pound/foot/hour (lb/(ft·h)) is an imperial and US customary unit for dynamic viscosity.

Applications & Practical Context

In practical viscosity dynamic terms, a pure drinking water dynamic viscosity at 20 degrees Celsius equals 2.4191 lb/(ft·h), a culinary extra virgin olive oil dynamic viscosity at room temperature equals 193.53 lb/(ft·h), a automotive engine motor oil SAE 30 dynamic viscosity at 20°C equals 483.82 lb/(ft·h).

Physical Setup

A physical magnitude of 1 lb/(ft·h) corresponds to 0.000413379 Pa·s in standard SI measurement.

Conversion to SI Unit: pascal second (Pa·s)
1 lb/(ft·h) = 0.000413379 Pa·s

Poise

P
CGS System

A Poise (P) is a unit of dynamic viscosity in the centimeter-gram-second (CGS) system.

Applications & Practical Context

In practical viscosity dynamic terms, a pure liquid water dynamic viscosity at room temperature (0.01 P / 1 cP) equals 0.01 P, a commercial culinary golden pancake syrup dynamic viscosity equals 25 P.

Physical Setup

A physical magnitude of 1 P corresponds to 0.1 Pa·s in standard SI measurement.

Conversion to SI Unit: pascal second (Pa·s)
1 P = 0.1 Pa·s

Domain Metrology & Engineering Applications

Governing Law & Equation

Newton's Law of Viscosity (τ = μ · du/dy)

Measurement Instrumentation

Rigorously quantified in laboratory and field settings using rotational cone-and-plate rheometers, falling ball Höppler viscometers, and vibrating wire viscometers.

Primary Industry Sectors

Applied across lubricating oil tribology (SAE engine grades), polymer extrusion, paint and coating formulation, and pharmaceutical liquid processing under international metrology standard ISO 80000-4:2019, ASTM D445.

Institutional Metrology & Standard Authority:

Formulas, conversion coefficients, and base definitions on this page strictly adhere to the ISO 80000-4:2019, ASTM D445 and the BIPM SI Brochure (9th Edition). Governed by Newton's Law of Viscosity (τ = μ · du/dy) under ISO 80000 dimensional vector [M L⁻¹ T⁻¹].

Multi-Variable Engineering Bridge Rheology & Fluid Boundary Layers

Dynamic to Kinematic Viscosity Bridge (m²/s • cSt • Stokes • ft²/s • in²/s • mm²/s)

Calculate fluid kinematic momentum diffusivity ν = μ / ρ across process liquids, bridging dynamic viscosity [M L⁻¹ T⁻¹] and kinematic viscosity [L² T⁻¹] via metrological density (ρ).

ν = μ / ρ
Vector: [Pa·s] ÷ [kg/m³] → [m²/s]
Live Calculated Bridge Equivalent:
1 lb/(ft·h) at Engine Lubricating Oil (SAE 30, 20°C) = 4.670948 × 10⁻⁷ m²/s
Equals 0.4671 cSt • 0.004671 St • 5.0278 × 10⁻⁶ ft²/s
SI Kinematic Viscosity
4.670948 × 10⁻⁷
m²/s
Square Meters per Second
Lubricant ISO VG
0.4671
cSt
Centistokes
CGS Viscosity
0.004671
St
Stokes
US Customary
5.0278 × 10⁻⁶
ft²/s
Square Feet per Second
Aero Hydraulics
0.00072
in²/s
Square Inches per Second
ISO Viscosity
0.4671
mm²/s
Square Millimeters per Second
  1. 1. Normalize Input to SI Base Unit (Pa·s):
    μ = 1 lb/(ft·h) × 0.00041338 = 0.00041338 Pa·s
  2. 2. Apply Engineering Parameter (ρ):
    Selected condition: Engine Lubricating Oil (SAE 30, 20°C) at ρ = 885 kg/m³
  3. 3. Execute Governing Physical Law in SI Units:
    ν = μ / ρ = (0.00041338 Pa·s) ÷ (885 kg/m³) = 4.670948 × 10⁻⁷ m²/s
  4. 4. Convert to Standard Engineering Units:
    • m²/s: 4.670948 × 10⁻⁷ × 1 = 4.670948 × 10⁻⁷ m²/s (Square Meters per Second) • cSt: 4.670948 × 10⁻⁷ × 1000000 = 0.4671 cSt (Centistokes) • St: 4.670948 × 10⁻⁷ × 10000 = 0.004671 St (Stokes) • ft²/s: 4.670948 × 10⁻⁷ × 10.7639 = 5.0278 × 10⁻⁶ ft²/s (Square Feet per Second) • in²/s: 4.670948 × 10⁻⁷ × 1550.0031 = 0.00072 in²/s (Square Inches per Second) • mm²/s: 4.670948 × 10⁻⁷ × 1000000 = 0.4671 mm²/s (Square Millimeters per Second)
Explore Full Density Converter →
Engineering Substance / Operating Standard Parameter Value (kg/m³) Reference State / Condition Typical Industrial & Engineering Application
Water (20°C / Standard Ambient) 998.2 998.2 kg/m³ Hydronic HVAC & cooling water (NIST)
Engine Lubricating Oil (SAE 30, 20°C) 885 885.0 kg/m³ Crankcase lubrication & turbo bearing feeds
Hydraulic Oil (ISO VG 46, 20°C) 870 870.0 kg/m³ Industrial hydraulic systems & servo controls
Heavy Fuel Oil (Bunker C / HFO, 50°C) 920 920.0 kg/m³ Marine diesel engines & power plant burners
Pure Glycerol (100% C₃H₈O₃, 20°C) 1260 1,260.0 kg/m³ High-viscosity metrology reference fluid
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Frequently Asked Questions

There are exactly 0.0041337887 poise (P) in 1 pound/foot/hour (lb/(ft·h)). To calculate larger amounts manually, simply multiply your total number of pounds/foot/hour by the conversion multiplier of 0.0041337887.

The mathematical formula to convert pounds/foot/hour to poise is: [value] * 0.0041337887 = poise. Rather than doing the math manually, you can use our high-precision online calculator to process this exact equation instantly without rounding errors.

To perform the reverse calculation from poise back to pounds/foot/hour, you must divide your starting value by 0.0041337887. Our bidirectional tool automatically computes this inverse equation the moment you type into the poise input field.

1 Poise is larger than 1 Pound/foot/hour. Specifically, 1 Pound/foot/hour equals 0.0041337887 poise, meaning 1 Poise is 241.9088 times larger than 1 Pound/foot/hour (a difference of 2.38 orders of magnitude). Expressing measurements in pounds/foot/hour requires a larger numerical value to represent the equivalent physical magnitude.

Under standard international measurement guidelines, 1 Pound/foot/hour converts to 0.0041337887 poise. Precise numerical conversion factors ensure consistency across laboratory, engineering, and field data.

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