Pounds/foot/hour to Pound Force Seconds/sq. inch Converter (lb/(ft·h) to lbf·s/in²)

Rate this converter

Instant calculation with 0ms overhead

Popular Converters

Live Conversion • ISO 80000-4:2019 Certified

1 Pound/foot/hour = 5.99555366 × 10⁻⁸ Pound-force second/sq. inch

1 lb/(ft·h) = 5.995554 × 10⁻⁸ lbf·s/in² • 1 lbf·s/in² = 1.667903 × 10⁷ lb/(ft·h)

Decimals:

Certified Authority Value

0.00000006

lbf·s/in²

From / Input

lb/(ft·h)

Swap to Pound-force second/sq. inch to Pound/foot/hour

To / Result

lbf·s/in²

Quick Values:

Conversion Formula

To convert Pound/foot/hour to Pound-force second/sq. inch, multiply by 5.99555366 × 10⁻⁸

lb/(ft·h) × 5.99555366 × 10⁻⁸ = lbf·s/in²

Calculation: 1 lb/(ft·h) × 5.99555366 × 10⁻⁸ = 5.99555366 × 10⁻⁸ lbf·s/in²

Common Pound/foot/hour to Pound-force second/sq. inch Calculations

Quick-lookup reference table showing calculated equivalents for standard increments between Pound/foot/hour (lb/(ft·h)) and Pound-force second/sq. inch (lbf·s/in²).

Tap any row to calculate

Pound/foot/hour to Pound-force second/sq. inch: Primary Direct Table (15 Steps)

Rule: 1 Pound/foot/hour is equal to 5.995554 × 10⁻⁸ lbf·s/in² (Pound-force second/sq. inch)

Pound/foot/hour to Pound-force second/sq. inch Conversion Reference Table
Conversion & Equivalent Value	Scientific Notation
0.001 lb/(ft·h) 5.995554 × 10⁻¹¹ lbf·s/in²	5.996 × 10⁻¹¹
0.01 lb/(ft·h) 5.995554 × 10⁻¹⁰ lbf·s/in²	5.996 × 10⁻¹⁰
0.1 lb/(ft·h) 5.995554 × 10⁻⁹ lbf·s/in²	5.996 × 10⁻⁹
0.5 lb/(ft·h) 2.997777 × 10⁻⁸ lbf·s/in²	2.998 × 10⁻⁸
1 lb/(ft·h) 5.995554 × 10⁻⁸ lbf·s/in²	5.996 × 10⁻⁸
2 lb/(ft·h) 1.199111 × 10⁻⁷ lbf·s/in²	1.199 × 10⁻⁷
5 lb/(ft·h) 2.997777 × 10⁻⁷ lbf·s/in²	2.998 × 10⁻⁷
10 lb/(ft·h) 5.995554 × 10⁻⁷ lbf·s/in²	5.996 × 10⁻⁷
20 lb/(ft·h) 1.199111 × 10⁻⁶ lbf·s/in²	1.199 × 10⁻⁶
25 lb/(ft·h) 1.498888 × 10⁻⁶ lbf·s/in²	1.499 × 10⁻⁶
50 lb/(ft·h) 2.997777 × 10⁻⁶ lbf·s/in²	2.998 × 10⁻⁶
100 lb/(ft·h) 5.995554 × 10⁻⁶ lbf·s/in²	5.996 × 10⁻⁶
250 lb/(ft·h) 1.498888 × 10⁻⁵ lbf·s/in²	1.499 × 10⁻⁵
500 lb/(ft·h) 2.997777 × 10⁻⁵ lbf·s/in²	2.998 × 10⁻⁵
1000 lb/(ft·h) 5.995554 × 10⁻⁵ lbf·s/in²	5.996 × 10⁻⁵

Pound-force second/sq. inch to Pound/foot/hour: Reciprocal Summary

Rule: 1 Pound-force second/sq. inch is equal to 1.667903 × 10⁷ lb/(ft·h) (Pound/foot/hour)

Pound-force second/sq. inch to Pound/foot/hour Conversion Reference Table
Reciprocal & Equivalent Value	Scientific Notation
1 lbf·s/in² 1.667903 × 10⁷ lb/(ft·h)	1.668 × 10⁷
5 lbf·s/in² 8.339513 × 10⁷ lb/(ft·h)	8.34 × 10⁷
10 lbf·s/in² 1.667903 × 10⁸ lb/(ft·h)	1.668 × 10⁸
50 lbf·s/in² 8.339513 × 10⁸ lb/(ft·h)	8.34 × 10⁸
100 lbf·s/in² 1.667903 × 10⁹ lb/(ft·h)	1.668 × 10⁹

View Complete 15-Row Pound-force second/sq. inch to Pound/foot/hour Table

Real-World Context & Everyday Benchmarks

Tap to load into converter

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 Pound-force second/sq. inch (lbf·s/in²):

Pound/foot/hour References:

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

Pound-force second/sq. inch References:

Reyn unit: Heavy industrial steam turbine bearing oil film 5.0E-6 lbf·s/in²

Tap any benchmark above to automatically calculate its exact equivalent in Pound-force second/sq. inch.

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

How to Convert Pound/foot/hour to Pound-force second/sq. inch

Converting Pound/foot/hour (lb/(ft·h)) to Pound-force second/sq. inch (lbf·s/in²) is a core calculation in Dynamic Viscosity, which quantifies a fluid's internal tangential resistance to shear deformation and laminar flow. This calculation navigates the boundary between the International Metric System (SI) and British Imperial / US Customary engineering standards. In contemporary metrology, Imperial units are defined in terms of exact SI standards via international agreements—notably NIST SP 811 and the 1959 International Yard and Pound Agreement. Exactly 1 Pound/foot/hour equals 5.995554 × 10⁻⁸ Pound-force second/sq. inch, while 1 lbf·s/in² equals 1.667903 × 10⁷ lb/(ft·h).

Direct Factor1 lb/(ft·h) = 5.995554 × 10⁻⁸ lbf·s/in²

Inverse Ratio1 lbf·s/in² = 1.667903 × 10⁷ lb/(ft·h)

Conversion ScaleMetric SI to British Imperial / US Customary 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:

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 (k_source):1 lb/(ft·h) = 0.000413379 pascal second (Pa·s)

2. Target SI Bridge (k_target):1 lbf·s/in² = 6894.757293 pascal second (Pa·s)

Step-by-step substitution for Pound/foot/hour → Pound-force second/sq. inch:V(lbf·s/in²) = V(lb/(ft·h)) × ( 0.000413379 / 6894.757293 ) = V(lb/(ft·h)) × 5.995554 × 10⁻⁸

Mathematical FormulaValue in Pound-force second/sq. inch = Value in Pound/foot/hour × 5.99555366 × 10⁻⁸Direct computational formula applied for standard conversion.

Worked Example

For an engineering input of 8 lb/(ft·h), applying the conversion factor yields exactly 4.796443 × 10⁻⁷ lbf·s/in². At larger operational scale, 5000 Pound/foot/hour corresponds to 0.000299778 lbf·s/in².

Inverse check: 1 lbf·s/in² = 1.667903 × 10⁷ lb/(ft·h).

Understanding Pound/foot/hour and Pound-force second/sq. inch

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).

Input Dynamic (Absolute) Viscosity (μ): lb/(ft·h)

Select Fluid Density: 885 kg/m³

Governing Law: 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

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

Step-by-Step Numerical Derivation Proof View Derivation

1. Normalize Input to SI Base Unit (Pa·s):
μ = 1 lb/(ft·h) × 0.00041338 = 0.00041338 Pa·s
2. Apply Engineering Parameter (ρ):
Selected condition: Engine Lubricating Oil (SAE 30, 20°C) at ρ = 885 kg/m³
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. 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

Frequently Asked Questions

There are exactly 5.99555366 × 10⁻⁸ pound force seconds/sq. inch (lbf·s/in²) 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 5.99555366 × 10⁻⁸.

The mathematical formula to convert pounds/foot/hour to pound force seconds/sq. inch is: [value] * 5.99555366 × 10⁻⁸ = pound force seconds/sq. inch. 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 pound force seconds/sq. inch back to pounds/foot/hour, you must divide your starting value by 5.99555366 × 10⁻⁸. Our bidirectional tool automatically computes this inverse equation the moment you type into the pound-force second/sq. inch input field.

1 Pound-force second/sq. inch is larger than 1 Pound/foot/hour. Specifically, 1 Pound/foot/hour equals 5.99555366 × 10⁻⁸ pound force seconds/sq. inch, meaning 1 Pound-force second/sq. inch is 1.6679 × 10⁷ times larger than 1 Pound/foot/hour (a difference of 7.22 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 5.99555366 × 10⁻⁸ pound force seconds/sq. inch. Precise numerical conversion factors ensure consistency across laboratory, engineering, and field data.