How do you calculate profile cut length yield?

Divide accepted cut length by total profile length extruded, then multiply by 100. With 9,400 ft accepted out of 10,000 ft extruded, yield is 94%.

What is a good cut length yield for profile extrusion?

Dialed-in rigid PVC and profile lines usually run 95-98% saleable yield. At 94% against a 97% target you are 3 points short, which on a 10,000 ft run is 300 ft of lost saleable product.

Why is my cut length yield below target?

The most common causes are excessive startup purge trimmed before dimensions stabilize, wall-thickness drift pushing sections out of tolerance, saw-length variation, and sink or warp on cooling. Each shows up as trimmed or rejected footage, not as machine downtime.

Does cut length yield include startup scrap?

Yes. Any footage extruded but not accepted as saleable is in the denominator, so purge and dimension-settling scrap at line start directly pull the yield down. Long runs dilute that startup penalty.

Cut length yield vs first-pass yield: what's the difference?

Cut length yield is length-based and specific to how much extruded profile becomes saleable cut stock. First-pass yield is typically piece-based and counts whole units passing all checks the first time; for continuous profile, length-based yield is the more honest measure.

How do I convert a yield gap into lost feet?

Multiply the point gap by total extruded length. A 3-point gap on 10,000 ft equals 300 ft of profile you paid to make but cannot sell.

Plastics Extrusion - Pipe, Film & Profile calculator

Profile Cut Length Yield Calculator

Profile cut length yield is the share of extruded linear footage that survives cutoff, tolerance checks, and end-trim to become saleable profile. Process engineers and line leads on window lintel, decking, and vinyl trim lines track it because scrap in profile extrusion is measured in feet, not pieces, and a few points of yield loss on a 24/7 line is real resin and machine hours gone. It separates true saleable output from raw throughput, feeding directly into resin cost-per-foot and OEE quality figures. Unlike a simple scrap count, it captures short shots, out-of-tolerance sections, and startup purge trimmed before the saw.

What this calculator does

Measure yield from acceptable cut lengths versus total profile length extruded, including saw scrap and short pieces.
Use it when profile extrusion teams need to understand cut length loss, saw setup loss, and usable footage.
It computes the percentage of total extruded profile length accepted as saleable cut lengths, plus the point gap to your target.

Formula used

Profile Cut Length Yield = accepted cut length ÷ total profile length extruded
Gap to target = target cut length yield - calculated rate

Inputs explained

Accepted profile length after cutoff:
Total profile length extruded:
Target cut length yield:

How to use the result

Use it per run or per shift to grade a profile line's cut-length performance and quantify how far off target you are before chasing root causes.
It treats all accepted footage as equal value and ignores where in the run loss occurred, so a line with heavy startup scrap and one with steady mid-run rejects can show the same yield.

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 plastic resins and materials stands at 319.371 (BLS, May 2026), up 19.5% from a year earlier. Quotes priced off last quarter's material cost miss this move.
The U.S. has 3,569 primary metal manufacturing establishments employing about 354,911 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate profile cut length yield? Divide accepted cut length by total profile length extruded, then multiply by 100. With 9,400 ft accepted out of 10,000 ft extruded, yield is 94%.
What is a good cut length yield for profile extrusion? Dialed-in rigid PVC and profile lines usually run 95-98% saleable yield. At 94% against a 97% target you are 3 points short, which on a 10,000 ft run is 300 ft of lost saleable product.
Why is my cut length yield below target? The most common causes are excessive startup purge trimmed before dimensions stabilize, wall-thickness drift pushing sections out of tolerance, saw-length variation, and sink or warp on cooling. Each shows up as trimmed or rejected footage, not as machine downtime.
Does cut length yield include startup scrap? Yes. Any footage extruded but not accepted as saleable is in the denominator, so purge and dimension-settling scrap at line start directly pull the yield down. Long runs dilute that startup penalty.
Cut length yield vs first-pass yield: what's the difference? Cut length yield is length-based and specific to how much extruded profile becomes saleable cut stock. First-pass yield is typically piece-based and counts whole units passing all checks the first time; for continuous profile, length-based yield is the more honest measure.

Last reviewed 2026-05-12.