What is pound foot/square second?

It is a force unit in the foot–pound–second system defined as one pound mass accelerated at one foot per second squared, often called the poundal.

How is pound-force [lbf] defined?

Pound-force is the force exerted by standard gravity on a one avoirdupois pound mass, commonly used in US customary and Imperial systems to express weight.

Why convert between pound foot/square second and pound-force?

To interpret forces measured as mass times acceleration in FPS units into weight-based forces used in engineering, aerospace, and mechanical applications.

Convert Pound foot/square second to Pound-force [lbf] Online

Easily convert force values from pound foot/square second to pound-force [lbf] using this reliable online unit converter. Ideal for engineering, mechanics, and aerospace applications.

Pound foot/square second

Pound-force [lbf]

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

Pound foot/square second to Pound-force [lbf] Conversion Table

Pound foot/square second	Pound-force [lbf]

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/square second to Pound-force [lbf] Conversion Table
Pound foot/square second	Pound-force [lbf]

Explore More Force Units Converter

What Is This Tool?

This converter transforms force measurements from pound foot/square second, a FPS system unit based on mass times acceleration, into pound-force [lbf], the unit expressing force as weight under standard gravity. It supports education, legacy engineering, and practical force reporting in imperial units.

How to Use This Tool?

Enter the force value in pound foot/square second
Select pound foot/square second as the input unit
Choose pound-force [lbf] as the output unit
Click convert to see the result in pound-force [lbf]
Use the output for interpreting force in terms of gravitational weight

Key Features

Converts pound foot/square second to pound-force [lbf] instantly
Supports classical mechanics and legacy FPS unit contexts
Based on standard gravity conditions for accurate translation
Browser-based tool requiring no installation
Useful for engineering, aerospace thrust, and mechanical load conversions

Examples

10 pound foot/square second converts to 0.310809502 pound-force [lbf]
50 pound foot/square second converts to 1.55404751 pound-force [lbf]

Common Use Cases

Solving classroom and textbook mechanics problems using FPS units where pound is a mass unit
Legacy engineering calculations from older American or British documentation using FPS units
Estimating small-scale dynamics or ballistic forces in imperial units
Expressing weight forces for objects in US customary units
Specifying thrust values for aircraft, rockets, and jet engines
Reporting mechanical loads such as bolt tension and lifting capacities

Tips & Best Practices

Always verify the context to distinguish between pound foot/square second and pound-force
Use pound-force for practical force measurements under gravity
Apply this conversion primarily for educational, historical, or legacy engineering purposes
Remember conversions assume standard gravity and not local variations
Use consistent units when calculating mechanical loads or forces

Limitations

Pound foot/square second is less commonly used in modern engineering compared to pound-force
Can be confused with pound-force if unit context is ignored
Conversion assumes standard gravity and does not include variations in local gravitational acceleration
Mainly academic or historical with limited direct practical application

Frequently Asked Questions

What is pound foot/square second?: It is a force unit in the foot–pound–second system defined as one pound mass accelerated at one foot per second squared, often called the poundal.
How is pound-force [lbf] defined?: Pound-force is the force exerted by standard gravity on a one avoirdupois pound mass, commonly used in US customary and Imperial systems to express weight.
Why convert between pound foot/square second and pound-force?: To interpret forces measured as mass times acceleration in FPS units into weight-based forces used in engineering, aerospace, and mechanical applications.

Key Terminology

Pound foot/square second: A FPS system force unit equal to one pound mass accelerated at one foot per second squared, called the poundal.
Pound-force [lbf]: A unit of force defined as the force exerted by standard gravity on a one avoirdupois pound mass, commonly used to express weight in US customary units.
Standard Gravity: The acceleration due to gravity defined as exactly 9.80665 m/s², used to relate mass to weight in force conversions.

Quick Knowledge Check

What does one pound foot/square second represent?

A unit of energy in FPS system

A unit of force as mass accelerated at 1 ft/s²

A unit of pressure

Pound-force [lbf] is defined as the force due to:

Standard gravity on one pound mass

One pound mass moving one foot

Force required to accelerate one pound mass by 1 m/s²

Why is the pound foot/square second unit less common today?

It is a newer metric unit

It is mainly academic or historical with practical force measured in lbf

It measures torque, not force

Share Us

Similar Calculators

Online Fuel Efficiency Volume Units Converter Online Acceleration Units Converter Online Specific Heat Capacity Units Converter Online Digital Image Resolution Units Converter Online Length Units Converter