Inch-Pounds to Foot-Pounds Converter

Convert torque from inch-pounds to foot-pounds.

How the Math Works

The inch-pounds to foot-pounds conversion relies on the fundamental relationship between inches and feet. Since 1 foot equals 12 inches, torque values must be divided by 12 to convert from inch-pounds (in·lb) to foot-pounds (ft·lb). For example, 120 inch-pounds equals 10 foot-pounds because 120 ÷ 12 = 10. This linear scaling ensures the torque measurement maintains its physical meaning while adjusting to the larger foot-pound unit.

Practical Applications

To apply this conversion practically, start by determining the required tightening torque in inch-pounds using manufacturer specifications or engineering diagrams. Divide this value by 12 to obtain the equivalent in foot-pounds. For instance, if a bolt specification calls for 72 inch-pounds of torque, the calculation would be 72 ÷ 12 = 6 foot-pounds. This conversion is essential when working with torque wrenches calibrated in different units or when comparing specifications across various technical documents.

Day-to-Day Use

This conversion helps in everyday mechanical tasks around the home or garage. Whether you're assembling furniture, installing ceiling fans, or performing car maintenance, torque specifications often appear in inch-pounds for small fasteners and foot-pounds for larger components. Understanding this relationship prevents over-tightening that could strip threads or under-tightening that could cause loosening. It's particularly useful when working with precision instruments like power tools, where proper torque ensures optimal performance and longevity of components without guesswork.

Worked example

120 in·lb → 10 ft·lb.

FAQ