What does pound-force second per square foot measure?

It measures dynamic (absolute) viscosity in the Imperial/US customary system, representing fluid resistance to shear flow as force per area with velocity gradient.

What is the poise unit used for?

The poise is a CGS unit of dynamic viscosity, widely used to describe fluid internal resistance to shear in tribology, polymer processing, and rheology.

Why is precise conversion important between these units?

Because these units stem from different measurement systems, accurate conversion avoids errors in engineering and scientific calculations involving fluid viscosity.

Convert Pound-force second/sq. foot to Poise [P] – Dynamic Viscosity Converter

Quickly convert dynamic viscosity values from pound-force second per square foot (lbf·s/ft²) to poise (P). Ideal for petroleum engineering, lubrication, and rheology applications using Imperial and CGS units.

Pound-force second/sq. foot

Poise [P]

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Pound-force second/sq. foot to Poise [P] Conversion Table

Pound-force second/sq. foot	Poise [P]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

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Pound-force second/sq. foot to Poise [P] Conversion Table
Pound-force second/sq. foot	Poise [P]

Explore More Viscosity Dynamic Units Converter

What Is This Tool?

This online converter transforms dynamic viscosity measurements from pound-force second per square foot, an Imperial unit, into poise, a CGS unit. It helps users bridge unit systems when analyzing fluid resistance to shear flow in engineering and scientific fields.

How to Use This Tool?

Enter the dynamic viscosity value in pound-force second per square foot.
Select the original measurement unit (pound-force second/sq. foot).
Select the target unit as poise [P].
Click the convert button to see the result in poise.
Use the examples as a guide to verify your conversions.

Key Features

Converts dynamic viscosity from pound-force second/sq. foot to poise with a precise factor.
Supports use cases in petroleum engineering, lubrication technology, and rheology labs.
Browser-based tool accessible anywhere without installation.
Includes example conversions for quick reference.
Facilitates comparison between Imperial/US customary and CGS unit systems.

Examples

2 pound-force second/sq. foot equals approximately 957.61 poise [P].
0.5 pound-force second/sq. foot converts to around 239.40 poise [P].

Common Use Cases

Specifying or testing viscosity of heavy oils, greases, and tars in petroleum and lubrication engineering.
Calculating pipe flow and pump designs that require viscosity in Imperial units.
Performing empirical rheology for sludges or highly viscous industrial fluids reported in customary units.
Characterizing lubricant viscosities and motor oils in tribology and engine design.
Assessing flow behavior of polymer melts and viscous industrial fluids during processing.
Reporting lab rheological measurements in centipoise or poise units.

Tips & Best Practices

Always double-check the units before converting to prevent errors.
Apply the conversion factor accurately without early rounding to maintain precision.
Use this tool to compare viscosity data consistently between different unit systems.
Consider the context of use when working across Imperial, CGS, and SI units.

Limitations

Imperial-based pound-force second/sq. foot and CGS-based poise units require careful conversion to avoid unit incompatibility.
Applying incorrect conversion in SI or metric unit contexts can cause errors.
Rounding the conversion factor prematurely may impact the accuracy of viscosity calculations.

Frequently Asked Questions

What does pound-force second per square foot measure?: It measures dynamic (absolute) viscosity in the Imperial/US customary system, representing fluid resistance to shear flow as force per area with velocity gradient.
What is the poise unit used for?: The poise is a CGS unit of dynamic viscosity, widely used to describe fluid internal resistance to shear in tribology, polymer processing, and rheology.
Why is precise conversion important between these units?: Because these units stem from different measurement systems, accurate conversion avoids errors in engineering and scientific calculations involving fluid viscosity.

Key Terminology

Pound-force second/sq. foot: An Imperial unit of dynamic viscosity representing the resistance of a fluid to shear flow with a force of one pound over a square foot area per second.
Poise [P]: A CGS unit of dynamic viscosity defined as 1 g·cm⁻1·s⁻1, indicating fluid resistance to shear, equivalent to 0.1 pascal-second.
Dynamic Viscosity: A measure of a fluid's internal resistance to flow under an applied shear stress.

Quick Knowledge Check

Which unit system does pound-force second per square foot belong to?

CGS system

Imperial/US customary system

SI unit system

What is the poise unit mainly used to represent?

Pressure

Dynamic viscosity

Temperature

Why should early rounding be avoided when converting viscosity units here?

To save conversion time

To maintain calculation accuracy

To simplify the unit names

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