What does pound/foot/hour measure in viscosity?

Pound/foot/hour is an imperial engineering unit expressing a fluid's internal resistance to shear, relating shear stress to velocity gradient in dynamic viscosity.

When should I use pound-force second per square inch?

This unit is used to describe viscosity of thick greases, heavy oils, and polymer melts in US customary contexts, especially in industrial or technical specifications.

Why is the conversion factor so small between these units?

Because pound/foot/hour uses hour and foot units, and pound-force second per square inch uses seconds and inches, the conversion factor accounts for differences in time and area scales, resulting in a very small value.

How to Convert from Pound/foot/hour [lb/(ft*h)] to Pound-force second/sq. inch?

Learn how to accurately convert dynamic viscosity values from pound/foot/hour [lb/(ft*h)] to pound-force second per square inch (lbf·s/in²) with this easy-to-use online unit converter designed for US customary units.

Pound/foot/hour [lb/(ft*h)]

Pound-force second/sq. inch

Please check your input. It must be a valid numeric value.

Pound/foot/hour [lb/(ft*h)] to Pound-force second/sq. inch Conversion Table

Pound/foot/hour [lb/(ft*h)]	Pound-force second/sq. inch

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Pound/foot/hour [lb/(ft*h)] to Pound-force second/sq. inch Conversion Table
Pound/foot/hour [lb/(ft*h)]	Pound-force second/sq. inch

Explore More Viscosity Dynamic Units Converter

What Is This Tool?

This tool converts dynamic viscosity measurements from the imperial unit pound/foot/hour (lb/(ft*h)) to pound-force second per square inch (lbf·s/in²). It helps translate viscosity values commonly found in legacy engineering data into psi-based units relevant for thick fluids and industrial materials.

How to Use This Tool?

Enter the viscosity value in pound/foot/hour [lb/(ft*h)]
Select pound-force second per square inch (lbf·s/in²) as the target unit
Click convert to see the equivalent viscosity in lbf·s/in²
Use the results for engineering calculations, reporting, or materials specifications

Key Features

Converts between pound/foot/hour and pound-force second per square inch units
Supports dynamic viscosity measurements used in US customary engineering
Browser-based and easy to use with quick input and output
Facilitates interpretation of legacy viscosity data and supports industrial applications

Examples

10 lb/(ft*h) converts to 5.9955536596387e-7 lbf·s/in²
1000 lb/(ft*h) converts to 5.9955536596387e-5 lbf·s/in²

Common Use Cases

Specifying lubricant viscosity in US customary engineering documents
Performing viscous flow calculations for piping or rotating equipment
Reporting viscosity values of fuels, heavy oils, or bitumen using psi-based units
Interpreting legacy technical data involving hour-based viscosity units

Tips & Best Practices

Ensure time units (hours vs seconds) and area units (feet vs inches) are properly interpreted
Use scientific notation for small conversion results to maintain clarity
Verify unit selection carefully when working within imperial unit systems
Cross-check conversions when using values from legacy datasets or reports

Limitations

Different base quantities in imperial units require careful interpretation
Small conversion factor results can lead to very low numerical values
Time and area unit differences may cause errors if not handled accurately
Not intended for metric or non-imperial unit conversions

Frequently Asked Questions

What does pound/foot/hour measure in viscosity?: Pound/foot/hour is an imperial engineering unit expressing a fluid's internal resistance to shear, relating shear stress to velocity gradient in dynamic viscosity.
When should I use pound-force second per square inch?: This unit is used to describe viscosity of thick greases, heavy oils, and polymer melts in US customary contexts, especially in industrial or technical specifications.
Why is the conversion factor so small between these units?: Because pound/foot/hour uses hour and foot units, and pound-force second per square inch uses seconds and inches, the conversion factor accounts for differences in time and area scales, resulting in a very small value.

Key Terminology

Pound/foot/hour [lb/(ft*h)]: An imperial unit of dynamic viscosity expressing internal fluid resistance to shear using force-time per unit area with hour-based time.
Pound-force second per square inch (lbf·s/in²): An imperial dynamic viscosity unit relating shear stress to shear rate, commonly used for thick fluids with psi-based area units.

Quick Knowledge Check

What type of measurement does pound/foot/hour represent?

Force

Dynamic viscosity

Pressure

Which unit is equivalent to 1 pound-force second per square inch?

6.895×10³ pascal-seconds

1 pascal

1 newton

When converting lb/(ft*h) to lbf·s/in², the conversion factor is:

Approximately 6.9×10⁻³

Approximately 6×10⁻⁸

Approximately 1

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