Convert ft lb to watt hours

Foot-pound

A foot-pound is the work done by one pound-force acting through one foot of distance.

Foot-pounds developed from customary force and length units and remain common in US mechanical contexts.

ft-lb is used in mechanical work, impact energy, equipment specifications, torque-related documents, and engineering comparisons.

Watt-hour

A watt-hour is the energy delivered by one watt of power over one hour.

Watt-hours became common as electrical systems needed a practical unit for energy use and storage over time.

Wh is used for batteries, electronics, chargers, portable power stations, solar systems, and small electrical energy estimates.

How to Convert Foot-pound to Watt-hour

Mathematically, watt-hour (Wh) = foot-pound (ft·lbf) converted with the formula below.

1 ft·lbf = 0.000377 Wh

1 Wh = 2,655.223737 ft·lbf

Formula: value × 0.000376616096759

Example: 15 ft·lbf = 0.005649 Wh

1. Start with the energy value in foot-pounds.
2. Convert foot-pounds to joules using 1 ft-lb = 1.3558179483314004 J.
3. Use 3600 J for each watt-hour.
4. Divide the joule value by 3600 to get watt-hours.

Precision note: This converter uses 1 ft-lb = 1.3558179483314004 J and 1 Wh = 3600 J. The conversion gives ideal energy equivalence, not system efficiency.

How many ft·lbf in Wh and Wh in ft·lbf

1 ft·lbf = 0.000377 Wh

1 Wh = 2,655.223737 ft·lbf

Common Use Cases for ft·lbf to Wh

• Comparing mechanical work with battery or device energy.
• Translating impact or force-distance work into electrical storage terms.
• Checking educational examples that connect ft-lb, joules, and Wh.
• Preparing mixed mechanical and electrical energy references.

FAQ