Is pound-force foot the same as torque?

No, although they share similar units and symbols, pound-force foot refers to energy while torque is a different physical quantity. Care must be taken to distinguish between them.

What is a watt-second equivalent to?

A watt-second is equivalent to one joule, representing the energy transferred by one watt of power sustained for one second.

Why convert pound-force foot to watt-second?

Converting to watt-second expresses energy in SI units, facilitating scientific calculations and compatibility with electrical and thermal energy measurements.

How to Convert from Pound-force foot [lbfft] to Watt-second [Ws]?

Learn how to convert energy measurements from pound-force foot (lbf*ft) to watt-second (W*s) using our easy-to-follow guide and examples, ideal for engineers and technicians.

Pound-force foot [lbf*ft]

Watt-second [W*s]

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

Pound-force foot [lbfft] to Watt-second [Ws] Conversion Table

Pound-force foot [lbf*ft]	Watt-second [W*s]

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 foot [lbf*ft] to Watt-second [W*s] Conversion Table
Pound-force foot [lbf*ft]	Watt-second [W*s]

Explore More Energy Units Converter

What Is This Tool?

This unit converter transforms energy values from pound-force foot, an imperial unit of work or energy, into watt-seconds, an SI unit equal to joules. It helps users express mechanical work or energy in internationally recognized standard units.

How to Use This Tool?

Enter the energy value in pound-force foot (lbf*ft)
Select pound-force foot as the input unit
Choose watt-second (W*s) as the target output unit
Perform the conversion to obtain the equivalent energy value in watt-seconds

Key Features

Converts pound-force foot (lbf*ft) to watt-second (W*s) accurately
Includes clear examples demonstrating the conversion process
Supports use cases in mechanical engineering, ballistics, and electrical testing
Browser-based and simple to use without installation

Examples

Convert 5 lbf*ft to watt-seconds: 5 × 1.3558179483 = 6.7790897415 W·s
Convert 10 lbf*ft to watt-seconds: 10 × 1.3558179483 = 13.558179483 W·s

Common Use Cases

Calculating mechanical work or potential energy using imperial units
Expressing energy in SI units for scientific calculations
Converting torque-related energy values in tool calibration and ballistics
Measuring energy in electrical systems testing, such as capacitor discharges

Tips & Best Practices

Always verify the physical quantity (energy vs torque) before converting
Use this converter to maintain unit consistency between imperial and SI systems
Understand that watt-seconds are dimensionally identical to joules
Use watt-seconds when describing impulse energy in electrical or mechanical contexts

Limitations

Pound-force foot is often confused with torque units despite similar symbols
Watt-seconds and joules are dimensionally the same but context matters to avoid confusion
Conversion assumes energy quantities; applying it to torque without caution may lead to errors

Frequently Asked Questions

Is pound-force foot the same as torque?: No, although they share similar units and symbols, pound-force foot refers to energy while torque is a different physical quantity. Care must be taken to distinguish between them.
What is a watt-second equivalent to?: A watt-second is equivalent to one joule, representing the energy transferred by one watt of power sustained for one second.
Why convert pound-force foot to watt-second?: Converting to watt-second expresses energy in SI units, facilitating scientific calculations and compatibility with electrical and thermal energy measurements.

Key Terminology

Pound-force foot (lbf*ft): An imperial unit of energy representing work done by a force of one pound-force over a distance of one foot.
Watt-second (W*s): An SI unit of energy equal to the energy transferred by one watt of power sustained for one second; dimensionally equivalent to a joule.
Torque: A physical quantity related to rotational force, often expressed with the same units as energy but conceptually different.

Quick Knowledge Check

What does 1 pound-force foot approximately equal in watt-seconds?

0.7355 W·s

1.3558 W·s

2.2046 W·s

Which statement is true about watt-seconds?

They quantify torque

They are dimensionally equal to joules

They measure force directly

What should you be careful about when converting lbf*ft?

Mixing energy and torque units

Confusing pounds with watts

Converting seconds to minutes

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How to Convert from Pound-force foot [lbf*ft] to Watt-second [W*s]?

Pound-force foot [lbf*ft] to Watt-second [W*s] Conversion Table