Joule to Foot-pound

Joules to Foot-Pounds Calculator

⚙️ Joules to Foot-Pounds Calculator

Convert energy units between joules and foot-pounds for mechanical engineering, physics, and torque calculations.

Single Conversion
Batch Mode
Joule to Foot-pound
Table of Contents

Joule to Foot-Pounds

Foot-pounds (ft·lb) are a traditional unit of work and energy in the imperial system. They represent the energy required to move one pound of mass one foot against gravity. This unit is commonly used in mechanical engineering, automotive applications, and torque specifications.

1 ft·lb = 1.35582 J
The exact conversion factor between foot-pounds and joules, based on the international pound and foot definitions.

Practical Applications

🔧 Torque Wrench

50 ft·lb
Typical torque for lug nuts on a car wheel. This equals about 68 joules of rotational energy applied to tighten the bolt.

🏗️ Construction Work

100 ft·lb
Energy from a hammer striking a nail. This represents the work done to drive the nail 1 foot with 100 pounds of force.

⚙️ Engine Power

500 ft·lb
Torque output of a high-performance car engine at peak RPM. This equals approximately 678 joules of rotational force.

🏋️ Weightlifting

200 ft·lb
Work done lifting a 100-pound barbell 2 feet. This mechanical energy conversion shows how gravity affects lifting work.

🔨 Impact Tools

1,200 ft·lb
Energy delivered by a pneumatic hammer. This high-impact energy is used in construction and demolition work.

🚗 Brake System

300 ft·lb
Torque required to stop a vehicle safely. This represents the mechanical work needed to overcome inertia and friction.
Joules to Kilojoules Joule to Foot-Pound Foot-Pound to BTU BTU to Pound-Force Foot Horsepower to Torque
📋 Batch Conversion Instructions:
Enter energy values one per line or separated by commas. The calculator will convert each value to the selected output unit. Perfect for processing multiple torque measurements from engineering projects.

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Author

  • Manish Kumar

    Manish holds a B.Tech in Electrical and Electronics Engineering (EEE) and an M.Tech in Power Systems, with over 10 years of experience in Metro Rail Systems, specializing in advanced rail infrastructure.

    He is also a NASM-certified fitness and nutrition coach with more than a decade of experience in weightlifting and fat loss coaching. With expertise in gym-based training, lifting techniques, and biomechanics, Manish combines his technical mindset with his passion for fitness.

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