Torque unit conversion

Inch-Pounds to Foot-Pounds Calculator

Convert torque from pound-inches (lbf·in) to pound-feet (lbf·ft) while preserving its sign.

Torque input

Enter torque in pound-inches

lbf·in → lbf·ft
Converted torque

Pound-feet equivalent

The converted torque will appear here

Enter a signed torque value in pound-inches.

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What is Inch-Pounds to Foot-Pounds?

The Inch-Pounds to Foot-Pounds Calculator helps you convert torque from pound-inches to pound-feet. Both units describe torque: a force multiplied by perpendicular lever-arm distance. Because one foot contains 12 inches, the numeric conversion is a simple division by 12.

Use it as a transparent arithmetic check. The worked example below follows the same inputs and rounding as the live form, while the notes explain what the result can and cannot support.

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How to Use This Calculator

  1. Enter torque in pound-inches (lbf·in). Positive and negative values are accepted so direction conventions can be preserved.
  2. Calculate to divide the number by 12.
  3. Report the result as pound-feet (lbf·ft), rounded to four decimal places, and keep force and distance meanings clear rather than reading either unit as energy.

Write down the source and date of a real torque value before entering it. That small habit makes the result reproducible and helps another reader spot a unit or timing mismatch.

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Formula Used

Torque in lbf·ft = torque in lbf·in ÷ 12. The relationship follows 1 ft = 12 in while the pound-force part stays unchanged.

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Variables Explained

Input or resultMeaning
Pound-inchTorque produced by one pound-force acting at a one-inch perpendicular arm.
Pound-footTorque produced by one pound-force acting at a one-foot perpendicular arm.
SignMay represent direction under the user’s chosen convention.
Conversion factorExactly 12 inch-pounds per foot-pound.
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Worked Example

For 120 lbf·in, divide by 12: 120/12 = 10 lbf·ft.

Reversing the check, 10 lbf·ft × 12 in/ft = 120 lbf·in. No rounding is needed for this example.

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Why Use This Calculator?

The conversion changes the unit, not the physical torque. A negative input remains negative. Manufacturer specifications may distinguish tightening torque, breakaway torque and operating torque, so match the converted number to the correct specification and tool range.

Practical use: People usually open this page when they need to convert torque from pound-inches to pound-feet without building a spreadsheet for a single question. Both units describe torque: a force multiplied by perpendicular lever-arm distance. Because one foot contains 12 inches, the numeric conversion is a simple division by 12. For a real decision, calculate a central case and then change the most uncertain input to a reasonable lower and upper value. Seeing that range is often more informative than treating one rounded answer as permanent.

A useful result should be repeatable: keep the original inputs, unit choices and relevant date beside the pound-feet. If a second source uses another convention, reconcile that difference before comparing the numbers.

When sharing the answer, include a short label such as “pound-feet from the stated inputs.” That label keeps the number attached to its meaning. It also prevents a reader from mistaking a converted value, model output or planning estimate for a direct observation.

Scope: It converts units only and does not calculate torque from force and geometry.

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Common Mistakes

  • Multiplying by 12 when converting inches to feet.
  • Calling pound-foot torque a unit of ordinary linear force.
  • Confusing lbf·ft with foot-pound force used as an energy expression.
  • Rounding before comparing with a narrow tolerance specification.

Do a quick reasonableness check after calculating. A correct-looking decimal can still answer the wrong question when the source torque value uses a different definition.

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Frequently Asked Questions

What does the Inch-Pounds to Foot-Pounds Calculator calculate?

It is designed to convert torque from pound-inches to pound-feet. The output is a pound-feet based only on the values and conventions described on this page.

Which inputs should I check before using this Inch-Pounds to Foot-Pounds Calculator?

Check the unit, time period, sign and source definition for every entry. For this page in particular, confirm the meaning of the torque value rather than copying an unlabeled number from another source.

Why might my result differ from another calculator?

Another tool may use different rounding, units, timing or assumptions. Compare its stated formula with this page’s formula and scope. For Inch-Pounds to Foot-Pounds Calculator, even a valid alternative convention can produce a different result without either arithmetic operation being mistyped.

How many decimal places should I keep?

Keep the displayed precision for an ordinary check, but retain source precision when the result feeds another calculation. Do not imply more measurement certainty than the original torque value provides.

Can I use the result as an official decision?

The result is an educational estimate. It converts units only and does not calculate torque from force and geometry. Use the governing document, qualified professional or official service when a decision has financial, medical, legal or safety consequences.

What is a good way to verify the worked example?

Repeat each substitution in the displayed formula, keep units beside the numbers, and reverse the operation where possible. The example is also checked against the working calculator shown on the Inch-Pounds to Foot-Pounds Calculator.

Does changing the unit change the underlying quantity?

A legitimate unit conversion changes the numeral while preserving the quantity. A selector that merely labels currency or a model convention does not fetch outside data; the instructions above identify which behavior applies to this Inch-Pounds to Foot-Pounds Calculator.

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Sources & References