How do you calculate coil yield?

Divide prime output weight by master coil weight processed and multiply by 100. With 24,000 lb of prime from a 25,000 lb master coil, yield is 96 percent, meaning 1,000 lb became scrap or trim.

What is a good coil yield?

It varies by process: slitting often runs 96 to 99 percent, cut-to-length 95 to 98 percent, and blanking or stamping can drop to 60 to 80 percent due to skeleton scrap. Benchmark against your own target, here 95 percent.

Why is my coil yield below target?

Typical causes are excessive edge trim, wide crop allowances at coil ends, off-gauge or wavy starts, camber, and rejected sections. The 1,000 lb of loss in the default case is where the dollars hide.

How much does one yield point cost?

On a 25,000 lb coil, each percentage point is 250 lb of metal. At a typical steel cost that is real money per coil, and across thousands of coils a single point swing moves plant margin meaningfully.

Coil yield vs material utilization, are they the same?

They overlap but differ. Coil yield is prime weight over input weight for one process; material utilization often spans the full part nest or multiple operations. Yield is the cleaner per-coil line metric.

Can coil yield exceed 100 percent?

No. Prime output can never exceed the master coil weight it came from. A reading above 100 percent means a weighing or data-entry error, usually a wrong tare or mixed-up coil tag.

Metals, Steel, Aluminum & Coil Processing calculator

Coil Yield Calculator

Coil Yield is the percentage of an incoming master coil that leaves as prime, sellable product after slitting, cut-to-length, blanking, or stamping. In coil processing, the difference between 94 and 97 percent yield is pure margin, because every lost point is scrap steel or aluminum you paid full price for. Process engineers, slitter operators, and plant controllers track coil yield to expose excess edge trim, crop loss, off-gauge starts, and rejects. This calculator divides prime output weight by master coil weight and compares the result to your target, so you instantly see whether a line is giving back metal you cannot afford to lose.

What this calculator does

Calculate coil yield by comparing the prime weight you ship against the master coil weight you ran, then see how far the result sits from your yield target.
Use it when a slitting, cut-to-length, or blanking run needs a clean prime yield percentage and gap-to-target for the production board.
It computes the percentage of master coil weight that becomes prime output and the point gap between that yield and your target.

Formula used

Coil yield = prime output weight ÷ master coil weight processed × 100
Yield gap to target = coil yield - target coil yield

Inputs explained

Prime output weight:
Master coil weight processed:
Target coil yield:

How to use the result

Use it after a run or shift to grade line performance, compare gauges and alloys, or quantify scrap loss in dollars.
Yield by weight does not tell you where loss occurred; a low number could be edge trim, crop ends, or in-process rejects, so pair it with a scrap breakdown to act on it.

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 calculate coil yield? Divide prime output weight by master coil weight processed and multiply by 100. With 24,000 lb of prime from a 25,000 lb master coil, yield is 96 percent, meaning 1,000 lb became scrap or trim.
What is a good coil yield? It varies by process: slitting often runs 96 to 99 percent, cut-to-length 95 to 98 percent, and blanking or stamping can drop to 60 to 80 percent due to skeleton scrap. Benchmark against your own target, here 95 percent.
Why is my coil yield below target? Typical causes are excessive edge trim, wide crop allowances at coil ends, off-gauge or wavy starts, camber, and rejected sections. The 1,000 lb of loss in the default case is where the dollars hide.
How much does one yield point cost? On a 25,000 lb coil, each percentage point is 250 lb of metal. At a typical steel cost that is real money per coil, and across thousands of coils a single point swing moves plant margin meaningfully.
Coil yield vs material utilization, are they the same? They overlap but differ. Coil yield is prime weight over input weight for one process; material utilization often spans the full part nest or multiple operations. Yield is the cleaner per-coil line metric.

Last reviewed 2026-05-12.