Team Physics -
Created by: Team Physics -, Last Updated: April 25, 2024


What is Foot-pound?

A foot-pound is a unit of energy in the English system, representing the amount of work done when a force of one pound is applied over a distance of one foot in the direction of the Force.

F = Force × Distance

SI multiples of Foot-pound

Kilofoot-poundkft-lbkilo-1 kft-lb=1000 ft-lb
Megafoot-poundMft-lbmega-1 Mft-lb=106 ft-lb
Gigafoot-poundGft-lbgiga-1 Gft-lb=109 ft-lb
Terafoot-poundTft-lbtera-1 Tft-lb=1012 ft-lb
Petafoot-poundPft-lbpeta-1 Pft-lb=1015 ft-lb
Exafoot-poundEft-lbexa-1 Eft-lb=1018 ft-lb

Conversion of Foot-pound into other Units

Copy-of-Foot- Pound-1
From/ToConversion Factor
Foot-pound to Joules (J)10 ft-lb = 1.35582 J10 ft-lb = 13.5582 J
Foot-pound to Calories (cal)10 ft-lb = 0.323831 cal10 ft-lb = 3.23831 cal
Foot-pound to Kilowatt-hours (KWh)10 ft-lb = 0.000376616 kWh10 ft-lb = 0.00376616 kWh
Foot-pound to Ergs (ergs)10 ft-lb = 135581 ergs10 ft-lb = 1.35581×10⁶ ergs
Foot-pound to British Thermal Unit (BTU)10 ft-lb = 0.00128507 BTU10 ft-lb = 0.0128507 BTU
Foot-pound to Watt-hours (Wh)10 ft-lb = 0.000376616 Wh10 ft-lb = 0.00376616 Wh
Foot-pound to Kilocalories (kcal)10 ft-lb = 0.000323831 kcal10 ft-lb = 0.00323831 kcal
Foot-pound to Electronvolts (eV)10 ft-lb = 2.24978×10¹⁹ eV10 ft-lb = 2.24978×10²⁰ eV
Foot-pound to Megajoules (MJ)10 ft-lb = 1.35582×10⁻³ MJ10 ft-lb = 1.35582×10⁻² MJ
Foot-pound to Gigawatt-hours (GWh)10 ft-lb = 3.768×10⁻¹⁰ GWh10 ft-lb = 3.768×10⁻⁹ GWh


  • Energy units like foot-pounds are vital in physics and engineering, representing the work done by a force acting through a distance.
  • Understanding energy conversions allows for seamless communication and calculation across different systems of measurement.
  • Converting between units facilitates practical applications such as engineering design, construction, and energy efficiency assessments.
  • Energy units serve as fundamental building blocks in fields like mechanics, thermodynamics, and electrical engineering.
  • Familiarity with energy conversions enables efficient energy management and optimization in various industries.
  • Conversions between energy units play a crucial role in renewable energy projects, energy audits, and sustainability initiatives.
  • Mastery of energy unit conversions is essential for engineers, scientists, and professionals working in diverse technical fields.

Foot-pound to Joules (J)

10 ft-lb = 1.35582 J
  • Conversion from foot-pounds to joules involves understanding the relationship between force and distance.
  • Joules, as the standard unit of energy in the International System of Units (SI), provide a common basis for energy measurement.

Foot-pound to Calories (cal)

Foot-pound to Calories (cal)
  • Converting foot-pounds to calories sheds light on the energy content of food and physical activity.
  • Calories, commonly used in nutrition, quantify the energy obtained from food and expended during exercise.

Foot-pound to Kilowatt-hours (KWh)

10 ft-lb = 0.000376616 kWh
  • Transitioning from foot-pounds to kilowatt-hours offers insights into electrical energy consumption.
  • Kilowatt-hours are a practical unit for measuring electricity usage in households and industries.

Foot-pound to Ergs (ergs)

10 ft-lb = 135581 ergs
  • Converting foot-pounds to ergs enables exploration of energy at the microscopic level.
  • Ergs, commonly used in physics, represent the work done by a force of one dyne over a distance of one centimeter.

Foot-pound to British Thermal Unit (BTU)

Foot-pound to British Thermal Unit (BTU)
  • Transitioning from foot-pounds to BTU facilitates understanding energy in heating and cooling systems.
  • BTU, or British thermal units, quantify the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.

Foot-pound to Watt-hours (Wh)

10 ft-lb = 0.000376616 Wh
  • Converting foot-pounds to watt-hours provides insights into energy consumption and production.
  • Watt-hours, commonly used in electricity billing and renewable energy, measure the amount of energy used or generated over time.

Foot-pound to Kilocalories (kcal)

10 ft-lb = 0.000323831 kcal
  • Transitioning from foot-pounds to kilocalories relates to energy expenditure and dietary intake.
  • Kilocalories, often referred to simply as calories in nutrition, represent the energy content of food and beverages.

Foot-pound to Electronvolts (eV)

10 ft-lb = 2.24978×10¹⁹ eV
  • Converting foot-pounds to electronvolts delves into energy levels in particle physics.
  • Electronvolts, commonly used in atomic and particle physics, represent the kinetic energy gained by an electron when accelerated through an electric potential difference of one volt.

Foot-pound to Megajoules (MJ)

10 ft-lb = 1.35582×10⁻³ MJ
  • Transitioning from foot-pounds to megajoules offers insights into large-scale energy applications.
  • Megajoules, equivalent to one million joules, are often used to quantify energy in industrial and engineering contexts.

Foot-pound to Gigawatt-hours (GWh)

10 ft-lb = 3.768×10⁻¹⁰ GWh
  • Converting foot-pounds to gigawatt-hours relates to energy generation and consumption on a massive scale.
  • Gigawatt-hours, equivalent to one billion watt-hours, are used to measure the energy produced or consumed by large power plants and electricity grids.

What are the Uses of Foot-pound?

Automotive Engineering:

  • Engine Performance: Foot-pounds are used to measure the power output of engines, influencing acceleration and speed.
  • Vehicle Dynamics: Foot-pounds play a role in determining the handling characteristics of vehicles, affecting stability and maneuverability.

Construction Industry:

  • Heavy Machinery: Foot-pounds are utilized in heavy equipment such as cranes and excavators to lift and move large loads safely and efficiently.
  • Structural Integrity: In construction, foot-pounds are important for ensuring the proper tightening of bolts and fasteners, maintaining the structural integrity of buildings and infrastructure.

Sports and Fitness:

  • Strength Training: Foot-pounds are employed in weightlifting exercises to measure the force exerted on equipment such as barbells and dumbbells, facilitating muscle development and athletic performance.
  • Biomechanics: In sports science, foot-pounds are studied to understand the mechanics of human movement, contributing to the optimization of training programs and injury prevention strategies.

Manufacturing Processes:

  • Assembly Lines: Foot-pounds are used in manufacturing assembly lines to tighten bolts and fasteners with precision, ensuring product quality and reliability.
  • Quality Control: In quality assurance processes, foot-pounds are monitored to verify the consistency and accuracy of assembly operations, minimizing defects and recalls.

Aerospace Industry:

  • Flight Dynamics: Foot-pounds are considered in the design and operation of aircraft to calculate thrust and propulsion, influencing flight performance and efficiency.
  • Structural Design: In aerospace engineering, foot-pounds play a role in determining the structural strength and durability of aircraft components.

Renewable Energy Sector:

  • Ship Propulsion: Foot-pounds are utilized in maritime propulsion systems to calculate the torque required for propellers, influencing ship speed and maneuverability.
  • Mooring Systems: In marine engineering, foot-pounds are considered when designing mooring systems to secure vessels to docks or buoys, ensuring stability and safety in harbors and offshore locations.


How does the concept of foot-pounds relate to everyday experiences?

Understanding foot-pounds can help individuals grasp the effort required to perform tasks such as tightening screws, lifting weights, or operating machinery, contributing to better comprehension of mechanical principles in daily life.

Why is torque measured in foot-pounds and how does it differ from other torque units?

Foot-pounds offer a practical measurement of torque in industries where English units are commonly used. While other torque units exist, such as newton-meters, foot-pounds remain prevalent in certain applications due to historical and practical reasons.

What role does understanding foot-pounds play in engineering design and analysis?

Engineers use foot-pounds to evaluate the performance and efficiency of mechanical systems, ensuring components are designed to withstand specified loads and operate effectively within given parameters.

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