What is a pound-force foot (lbf*ft)?

It is an imperial unit of energy defined as the work done by one pound-force acting through a displacement of one foot in the force direction.

Why is therm (US) used for energy measurement?

Therm (US) is a unit commonly used in the United States to measure heat energy, especially for natural gas billing and heating system energy ratings.

Can I use pound-force foot to measure torque directly?

While the same units are sometimes used for torque, torque and energy are physically different quantities; this tool converts energy values, not torque.

How to Convert from Pound-force foot [lbf*ft] to Therm (US)?

Convert energy measurements from pound-force foot (lbf*ft), an imperial unit of mechanical energy, to therm (US), a unit commonly used to measure heat energy in natural gas and heating applications.

Pound-force foot [lbf*ft]

Therm (US)

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

Pound-force foot [lbf*ft] to Therm (US) Conversion Table

Pound-force foot [lbf*ft]	Therm (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

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 Therm (US) Conversion Table
Pound-force foot [lbf*ft]	Therm (US)

Explore More Energy Units Converter

What Is This Tool?

This converter helps you transform energy values expressed in pound-force foot (lbf*ft), an imperial mechanical energy unit, into therm (US), a unit used primarily for measuring heat energy in natural gas and heating systems.

How to Use This Tool?

Enter the energy value in pound-force foot (lbf*ft) into the input field
Select pound-force foot as the input unit and therm (US) as the output unit
Click convert to see the equivalent energy value in therm (US)

Key Features

Converts values from pound-force foot (lbf*ft) to therm (US) based on defined conversion rates
Supports energy conversions bridging mechanical work with thermal energy measurements
Easy-to-use interface suitable for natural gas billing, HVAC design, and energy auditing

Examples

100,000 lbf*ft converts to approximately 0.0012853743 therm (US)
1,000,000 lbf*ft converts to approximately 0.0128537429 therm (US)

Common Use Cases

Calculating work or potential energy in imperial units and relating it to heating energy metrics
Natural gas billing and invoicing for residential and commercial customers
Sizing and rating heating furnaces, boilers, and building energy systems
Estimating fuel energy content in industrial processes and for energy accounting

Tips & Best Practices

Double-check the unit symbols to avoid confusing torque values with energy
Use the conversion primarily when relating mechanical work values to thermal energy contexts
Keep in mind that resulting therm values may be small due to unit magnitude differences

Limitations

Pound-force foot is a small energy unit compared to therm (US), resulting in very small converted values
Torque and energy use similar units but represent different physical quantities; avoid mixing them
This conversion is less relevant if your application is exclusively mechanical or thermal without bridging contexts

Frequently Asked Questions

What is a pound-force foot (lbf*ft)?: It is an imperial unit of energy defined as the work done by one pound-force acting through a displacement of one foot in the force direction.
Why is therm (US) used for energy measurement?: Therm (US) is a unit commonly used in the United States to measure heat energy, especially for natural gas billing and heating system energy ratings.
Can I use pound-force foot to measure torque directly?: While the same units are sometimes used for torque, torque and energy are physically different quantities; this tool converts energy values, not torque.

Key Terminology

Pound-force foot (lbf*ft): An imperial unit of energy equal to the work done by a one pound-force acting through one foot in the direction of the force.
Therm (US): A non-SI unit of heat energy equal to 100,000 British thermal units, commonly used in the United States to measure natural gas and heating energy.

Quick Knowledge Check

What type of energy does pound-force foot (lbf*ft) represent?

Heat energy used in natural gas measurement

Mechanical work or energy in imperial units

Electrical energy for industrial processes

For what purpose is the therm (US) unit commonly used?

Measuring the speed of mechanical torque

Billing and rating of natural gas and heating energy

Calculating potential energy in mechanical systems

Why should you be careful when converting pound-force foot to therm (US)?

Because both units measure the same physical quantity

Because pound-force foot is much smaller compared to therm and values get very small

Because therm (US) is not used in HVAC applications

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