What does the poundal measure?

The poundal is a unit of force in the foot–pound–second system, defined as the force needed to accelerate a 1 pound mass at one foot per second squared.

Is the stone a mass or force unit?

The stone is a unit of mass, traditionally equal to 14 avoirdupois pounds, commonly used for body weight measurements in the UK.

Why is converting from poundal to stone complicated?

Because poundal measures force and stone measures mass, the conversion requires considering physical context and cannot be done directly without assumptions.

How to Convert from Poundal [pdl] to Stone (US)?

Learn how to convert weight and force measurements from poundal (pdl) in the FPS system to the traditional British stone (US) unit, commonly used for body and commodity weights.

Poundal [pdl]

Stone (US)

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Poundal [pdl] to Stone (US) Conversion Table

Poundal [pdl]	Stone (US)

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

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Interval

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

Poundal [pdl] to Stone (US) Conversion Table
Poundal [pdl]	Stone (US)

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What Is This Tool?

This converter helps transform values from poundal, a force unit in the foot–pound–second system, to stone (US), a traditional mass unit used mostly in historical and informal contexts.

How to Use This Tool?

Enter the value in poundals you want to convert
Select poundal [pdl] as the input unit and stone (US) as the output unit
Click convert to see the equivalent value in stone (US)
Use the provided formula or examples as a reference for manual calculations
Apply the conversion carefully considering the difference between force and mass

Key Features

Converts from poundal (force) to stone (mass) units
Uses the exact conversion rate based on standard definitions
Supports interpretations of historical, engineering, and medical data
Browser-based and easy to use for various fields
Provides examples for practical understanding

Examples

10 poundals [pdl] equals 0.02484472 stone (US)
100 poundals [pdl] equals 0.2484472 stone (US)

Common Use Cases

Solving classical mechanics problems in the FPS system
Interpreting older engineering or ballistics documents using FPS units
Converting between poundals and pound-force for historical data analysis
Reporting human body weight informally in the UK and Ireland using stone
Analyzing agricultural and livestock weight records
Transforming older imperial weights to metric units in medical and engineering contexts

Tips & Best Practices

Be mindful that poundal measures force, whereas stone measures mass
Use the conversion in appropriate physical contexts where connecting force to mass makes sense
Consult historical or engineering references when dealing with older data
Remember that stone (US) is rarely used in modern U.S. measurements
Double-check the units used in your source material for accurate application

Limitations

Direct conversion between force and mass units assumes standard gravity or context
The stone (US) unit is uncommon in modern U.S. practice, limiting practical use
Conversion may not apply correctly without proper contextual understanding
Users should avoid using this conversion for precise scientific calculations without adjustments

Frequently Asked Questions

What does the poundal measure?: The poundal is a unit of force in the foot–pound–second system, defined as the force needed to accelerate a 1 pound mass at one foot per second squared.
Is the stone a mass or force unit?: The stone is a unit of mass, traditionally equal to 14 avoirdupois pounds, commonly used for body weight measurements in the UK.
Why is converting from poundal to stone complicated?: Because poundal measures force and stone measures mass, the conversion requires considering physical context and cannot be done directly without assumptions.

Key Terminology

Poundal [pdl]: A force unit in the foot–pound–second system, defined as force causing 1 lb mass to accelerate at 1 ft/s².
Stone (US): A traditional British unit of mass equal to 14 avoirdupois pounds, used especially for body and commodity weights.
Foot–pound–second (FPS) system: A system of units commonly used in classical mechanics where poundal is a unit of force.

Quick Knowledge Check

What type of unit is the poundal?

Unit of mass

Unit of force

Unit of length

Which quantity does the stone represent?

Force

Mass

Acceleration

Why should you be cautious converting poundals to stone (US)?

Because stone (US) is not a recognized unit

Because converting between force and mass requires physical context

Because poundal is no longer used

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