How is steel coil developed length calculated?

Theoretical developed length is calculated from coil mass, material density, strip thickness, and strip width.

Can package weight be limited to five tonnes?

Yes. The tool creates a theoretical package plan using maximum package weight and maximum plate count.

Is the calculated result a final price?

No. It is a technical pre-calculation; feasibility, tolerances, price, and lead time require FMS approval.

Contract Coil Opening and Cut to Length

Multi-Coil Cut-to-Length Calculator and Quote Engine

Enter the weight or diameters of one or multiple coils to calculate developed length, head and tail allowance, cut quantities, remaining balance, and package plan.

Coil information Coil 1

Selecting a grade fills its density automatically. Custom grades can be entered manually.

Batch / coil number Steel grade Density (kg/m³) Thickness (mm) Width (mm)

How should coil weight be determined? Enter weight directly Calculate from inner and outer diameter

Coil weightUnit

Head and tail allowance

If unchanged, the pre-calculation uses the standard 1% allowance; the final value is confirmed during production approval.

Advanced allowance and head/tail settings

Calculation methodHead/tail valueHead/tail plates

Cut plan

Enter the cut length first, then choose how you want to request it. Tonnage is approximate; the calculator shows the nearest whole-sheet quantity and actual theoretical weight.

Balance and packaging

Packaging does not change the cutting quantity; it only determines how the resulting sheets are divided into packages.

Remaining balance Should sheets be packaged? How should the package limit be defined? Maximum package tonnage (tonnes)

Review calculation results

Live Pre-Calculation

Coil 1 production and packaging summary

Coil weight-

Developed length-

Net usable length-

Planned product-

Total sheets-

Final balance-

Packages-

Cut plan
Length	Requested	Planned	Per sheet	Total

Package plan
Package	Contents	Net weight

Technical quote request

Send the pre-calculation to FMS; final price and lead time follow technical review.

Full nameCompanyEmailPhoneDelivery location / requested date / notes

How is coil developed length calculated?

Coil mass can be derived from material density and the annular volume between outer and inner diameters. Developed length is calculated from mass, density, strip thickness, and width. The planner deducts each requested plate from net coil length and reports the remaining balance.

Why is technical approval still required?

Surface condition, actual head and tail deformation, tolerances, levelling behaviour, scale variation, and packaging can change in production. The online result is a pre-calculation, not a binding price or production commitment.