How do you convert coil weight to lineal feet?

Divide coil weight by the strip's weight per foot. A 10,000 lb coil at 8 lb/ft gives 10,000 ÷ 8 = 1,250 lineal feet.

How do I find weight per foot for my strip?

Multiply width × thickness × density to get weight per cubic inch of strip, then scale to a foot — or take it from the coil's spec sheet. It's specific to each width and gauge combination.

What is the conversion factor for?

It's a multiplier on the raw footage. Leave it at 1 for feet, use about 0.3048 to convert to meters, or apply a usable-length factor to account for crop and threading loss.

Will a 10,000 lb coil cover my job?

At 8 lb/ft it yields 1,250 feet. Compare that to your job's required footage plus setup and crop allowance; if the job needs more, you'll need a second coil.

Why does my footage seem too high or too low?

Almost always a wrong weight-per-foot. Because footage scales inversely with it, a value that's 10% off makes your footage 10% off in the opposite direction.

Can I go from lineal feet back to coil weight?

Yes — multiply lineal feet by weight per foot. That's the inverse of this calculation and is handy when ordering enough coil weight to cover a known footage.

Metals, Steel, Aluminum & Coil Processing calculator

Lineal Feet From Coil Calculator

Lineal feet from coil converts a weight-priced coil into the running length your line will actually feed, by dividing total coil weight by the strip's weight per foot. Roll formers, stampers, tube mills, and production planners rely on it because metal is bought by the pound but scheduled by the foot — you can't plan a run, set a cut count, or check inventory in pounds. The optional conversion factor lets you flip between feet and meters or apply a usable-length correction. Getting this right keeps you from over- or under-committing material on a job.

What this calculator does

Estimate the lineal feet on a coil by dividing the coil weight by the weight per foot, with an optional factor if you need another basis.
Use it when a planner or operator needs to know how many feet a coil will yield before scheduling a cut-to-length or roll forming run.
It divides coil weight by weight per foot to give raw lineal feet, then applies a conversion factor to produce a final converted length.

Formula used

Lineal feet = coil weight ÷ weight per foot
Converted lineal feet = lineal feet × conversion factor

Inputs explained

Coil weight:
Weight per foot:
Conversion factor:

How to use the result

Use it to turn a coil's pound weight into runnable footage for scheduling, to check whether a coil covers a job, or to convert units.
Accuracy depends entirely on a correct weight-per-foot for the exact width and gauge; a stale or wrong value scales the whole footage result proportionally.

Current U.S. benchmarks

The producer price index for steel mill products stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. Quotes priced off last quarter's material cost miss this move.
The producer price index for aluminum mill shapes stands at 404.859 (BLS, May 2026), up 36.8% from a year earlier. Quotes priced off last quarter's material cost miss this move.
The producer price index for copper and brass mill shapes stands at 559.593 (BLS, May 2026), up 76.8% from a year earlier. Quotes priced off last quarter's material cost miss this move. Global copper trades at $13,484 per tonne (IMF via FRED, May 2026).

Common questions

How do you convert coil weight to lineal feet? Divide coil weight by the strip's weight per foot. A 10,000 lb coil at 8 lb/ft gives 10,000 ÷ 8 = 1,250 lineal feet.
How do I find weight per foot for my strip? Multiply width × thickness × density to get weight per cubic inch of strip, then scale to a foot — or take it from the coil's spec sheet. It's specific to each width and gauge combination.
What is the conversion factor for? It's a multiplier on the raw footage. Leave it at 1 for feet, use about 0.3048 to convert to meters, or apply a usable-length factor to account for crop and threading loss.
Will a 10,000 lb coil cover my job? At 8 lb/ft it yields 1,250 feet. Compare that to your job's required footage plus setup and crop allowance; if the job needs more, you'll need a second coil.
Why does my footage seem too high or too low? Almost always a wrong weight-per-foot. Because footage scales inversely with it, a value that's 10% off makes your footage 10% off in the opposite direction.

Last reviewed 2026-05-12.