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Feet Per Pound Calculator

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The Feet Per Pound Calculator helps determine how many feet of material are contained in each pound of weight. This tool is particularly useful in industries like wire distribution, fabric handling, or piping, where weight-based purchasing needs to be translated into usable lengths.

By inputting the total length and total weight, users can understand the linear density of a material, which makes it easier to plan for transportation, storage, or installation. This tool simplifies planning and budgeting by giving quick access to essential unit conversions.

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formula of Feet Per Pound Calculator

Feet Per Pound = Total Length (feet) / Total Weight (pounds)

Where:

  • Feet Per Pound = number of feet in each pound of material
  • Total Length = overall material length in feet
  • Total Weight = total mass of the material in pounds

Rearranged Formulas:

  • Total Length = Feet Per Pound × Total Weight
  • Total Weight = Total Length / Feet Per Pound

This calculation is unitless beyond the defined feet/pound and helps users convert easily between length and weight for linear materials.

Common Reference Table: Feet Per Pound by Material Type

Material TypeTypical Feet per PoundNotes
Copper Wire (AWG 12)20 – 25 ft/lbDepending on insulation
Steel Cable (1/4")2 – 3 ft/lbVaries by coating or jacket type
Nylon Rope (1/2")4 – 6 ft/lbLightweight synthetic rope
PVC Tubing (1")0.8 – 1.2 ft/lbWall thickness affects this ratio
Cotton Fabric (Light)3.5 – 5 ft/lbDepends on weave and width
Aluminum Rod (3/8")1.5 – 2.5 ft/lbAlloy and finish influence weight

This table gives practical values that help users estimate without using the calculator every time.

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Example of Feet Per Pound Calculator

Suppose you have a spool of cable that weighs 80 pounds and contains 160 feet of cable.

Step-by-step:

  • Feet Per Pound = 160 / 80 = 2 ft/lb

This means that for every pound of this cable, you receive 2 feet of usable length. If a future job requires 500 feet of this cable, you would estimate the weight as:

  • Total Weight = 500 / 2 = 250 pounds

The calculator helps predict requirements without physically measuring or weighing each time.

Most Common FAQs

Is feet per pound always a fixed value?

No. It can vary depending on the material's density, insulation, moisture content, or external coatings. Always check the material specs if exactness matters.

Can I convert feet per pound to another unit, like meters per kilogram?

Yes. Multiply feet per pound by 0.3048 to get meters per pound, then divide by 2.20462 to convert pounds to kilograms. The result will be meters per kilogram.

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