What is a pound-force inch?

A pound-force inch is a unit of energy representing the work done by a one pound-force acting through a one-inch displacement, used primarily in US customary mechanical contexts.

How is a poundal foot defined?

A poundal foot is a unit of energy in the foot–pound–second system, equal to the work done by one poundal force acting through a displacement of one foot.

Why convert between lbf·in and pdl·ft?

Converting between these units helps interpret mechanical work values from different measurement systems, especially for legacy data reconciliation and classical mechanics applications.

How to Convert from Pound-force inch [lbfin] to Poundal foot [pdlft]?

Learn how to convert energy units from pound-force inch to poundal foot using our easy online converter. Understand the conversion rate and practical applications in mechanical engineering and classical mechanics.

Pound-force inch [lbf*in]

Poundal foot [pdl*ft]

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

Pound-force inch [lbfin] to Poundal foot [pdlft] Conversion Table

Pound-force inch [lbf*in]	Poundal foot [pdl*ft]

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-force inch [lbf*in] to Poundal foot [pdl*ft] Conversion Table
Pound-force inch [lbf*in]	Poundal foot [pdl*ft]

Explore More Energy Units Converter

What Is This Tool?

This tool helps you convert energy measurements from pound-force inch (lbf·in) to poundal foot (pdl·ft). It is designed for use in mechanical and classical mechanics contexts where small-scale work is measured using traditional US customary and foot–pound–second units.

How to Use This Tool?

Enter the energy value in pound-force inch in the input field.
Select pound-force inch as the input unit and poundal foot as the output unit.
Click the convert button to see the equivalent energy in poundal foot.
Use the result to reconcile legacy mechanical data or complete educational exercises.

Key Features

Simple conversion between pound-force inch and poundal foot units.
Accurate conversion rate based on established mechanical unit relationships.
Supports legacy mechanical engineering and classical mechanics workflows.
Browser-based and easy to use without software installation.

Examples

Convert 1 pound-force inch to poundal foot: 1 lbf·in equals 2.6811707189 pdl·ft.
Convert 5 pound-force inches to poundal foot: 5 lbf·in equals 13.4058535945 pdl·ft.

Common Use Cases

Quantifying small mechanical work such as torque per turn of screws.
Translating legacy US customary mechanical work values into FPS system units.
Analyzing classical mechanics problems using foot–pound–second measurements.
Converting historical engineering data for modern simulations.

Tips & Best Practices

Double-check input unit selection to ensure accurate conversions.
Use the tool for small amounts of mechanical work relevant to legacy systems.
Apply conversions carefully in precision-sensitive mechanical calculations.
Consult conversion context to avoid confusion across different unit systems.

Limitations

Both units represent relatively small energy amounts, requiring careful measurement.
Mismatch between mechanical unit systems can lead to confusion if not handled properly.
This converter is not intended for units outside of pound-force inch and poundal foot.

Frequently Asked Questions

What is a pound-force inch?: A pound-force inch is a unit of energy representing the work done by a one pound-force acting through a one-inch displacement, used primarily in US customary mechanical contexts.
How is a poundal foot defined?: A poundal foot is a unit of energy in the foot–pound–second system, equal to the work done by one poundal force acting through a displacement of one foot.
Why convert between lbf·in and pdl·ft?: Converting between these units helps interpret mechanical work values from different measurement systems, especially for legacy data reconciliation and classical mechanics applications.

Key Terminology

Pound-force inch [lbf·in]: A unit of energy equal to the work done by a one pound-force acting through a one-inch displacement in US customary units.
Poundal foot [pdl·ft]: A unit of energy in the foot–pound–second system representing work done by a force of one poundal acting over one foot.
Foot–pound–second (FPS) system: A system of units used in classical mechanics, employing feet, pounds, and seconds as base units.

Quick Knowledge Check

Which unit measures the work done by a pound-force acting through an inch?

Poundal foot [pdl*ft]

Pound-force inch [lbf*in]

Joule [J]

What does 1 poundal foot approximately equal in joules?

0.113 joules

0.0421401 joules

1 joule

Why is converting lbf·in to pdl·ft useful?

For converting small mechanical work values between systems

To measure electrical power

To calculate gravitational force

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How to Convert from Pound-force inch [lbf*in] to Poundal foot [pdl*ft]?

Pound-force inch [lbf*in] to Poundal foot [pdl*ft] Conversion Table