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Fabric Consumption Calculator for Garments

Fabric is usually 50 to 70 percent of the cost of a woven or knit garment, so a small error in consumption turns into a large cost error across an order. This calculator converts marker data into the metres you should book per garment and for the whole order.

Your numbers

Marker length

Length of the marker paper used for the lay, excluding end allowance.

Garments per marker

pcs

Complete garments (all body parts) nested in one marker.

End allowance per ply

Total extra length left at both ends of each ply for cutting and splicing.

Fabric shrinkage

Expected length shrinkage after wash or finish, from the shrinkage test.

Process wastage

Fabric defects, splices, remnants and sample cutting.

Order quantity

pcs

Fabric price

per m

Your results

Booking consumption per garment

1.2671

The figure to use when booking fabric.

Total fabric for order

15,205

Metres to book for the full order.

Base consumption per garment

1.205

Metres of fabric per garment before shrinkage and wastage.

After shrinkage

1.2423

Shrinkage is divided out because finished length is what remains after wash.

Fabric cost for order

$72,986

Fabric cost per garment

Estimates for planning. Confirm against an actual cut report and a shrinkage test on the production lot.

Save results:

Booking consumption vs shrinkage

Sweeps Fabric shrinkage from 0 to 15, holding your other inputs fixed.

Consumption variance review

Optional: we can outline how to compare booked and actual fabric consumption by style from your ERP data.

Optional. The tool and every export work without this. No spam.

How to use the calculator

Take the marker length from the CAD marker report, then enter the number of complete garments nested in that marker. Add the end allowance used on your cutting table, normally a few centimetres per ply. Enter shrinkage from your lab test and a wastage percentage from past cutting reports for the same fabric type. The result is the booking consumption per garment and the total metres for the order.

Use one marker per size group, then average weighted by size ratio.
Enter shrinkage as a positive number, for example 3 for three percent.
Use the order quantity you will actually cut, including any planned overage.

The formula behind the result

Base consumption equals (marker length plus end allowance) divided by garments per marker. Shrinkage then increases the quantity you need because the fabric comes out shorter, so base consumption is divided by (1 minus shrinkage). Wastage is added as a multiplier. This is the same sequence most buying houses expect on a consumption sheet: marker, allowances, shrinkage, wastage.

Final = ((L + E) / N) / (1 - S) x (1 + W)
L is marker length, E end allowance in metres, N garments per marker
S is shrinkage and W is wastage, both as fractions

Reading the result and common mistakes

Compare the booking figure with the costing figure agreed with the buyer. If actual cutting consumption runs above it, look at marker efficiency, splice count and width variation before blaming the fabric. A frequent mistake is using the cuttable width printed on the roll label instead of the measured usable width, which makes every marker look better than it cuts. Another is adding shrinkage as a multiplier instead of dividing, which understates the requirement.

Tying it to your ERP

In most apparel ERP setups consumption lives on the BOM line as quantity per plus a scrap percent. Use the booking consumption here as the quantity per and keep wastage separate where the system allows, so planned versus actual variance stays visible after the cut.

Frequently Asked Questions

How do I calculate fabric consumption for a shirt?

Take the marker length for the size mix, add the end allowance, divide by the number of shirts in the marker, then adjust for shrinkage and wastage. Enter those values above and the booking consumption per shirt is produced automatically.

What is a normal wastage percentage?

It depends on fabric and style. Plain solids often run low single digits, while checks, stripes and prints need more for matching. Use your own cutting report history for the same fabric type rather than a generic figure.

Should shrinkage be added or divided?

Divide by one minus the shrinkage fraction. Fabric that shrinks three percent in length delivers only 97 percent of the cut length, so you need slightly more than three percent extra, not exactly three percent.

Why does end allowance matter?

Each ply is cut slightly longer than the marker so the knife and splicing have room. Across hundreds of plies this adds up to real metres, so it must be counted in the per-garment figure.

If your BOM consumption and cutting actuals live in different systems, Netray can build a read-only view in your ERP that flags styles drifting above booked consumption.

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