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Packs per kg Calculator

Estimate nominal pack output from one kilogram of film using web width, repeat, lanes and GSM. The layout connects purchased film mass with its finished-unit allocation.

Use a saved product specification (optional)
01 / INPUTS

Enter your values

First time using this calculator?

Replace the example values with figures from your supplier sheet or measurements. Choose the unit beside each value. Results update as you type; fix any highlighted field before using the result.

GSM means grams per square metre. Net weight excludes the core and other packaging. MOQ means the minimum order quantity. An optional field can stay blank unless the result you need depends on it.

Prices keep the selected currency; changing its label does not convert an exchange rate. Save or export the result after checking your inputs.

Help with web width

Measure the full width of the flat material from edge to edge, rather than the width of one finished pack. Choose the matching unit.

lanes
g/m²

Use actual supplier or measured GSM when available.

Help with film gsm

GSM is the weight of one square metre of material, in grams. Find it on the supplier specification; use the complete laminate value for layered film.

Results update as you edit. Nothing is saved until you choose to.
02 / RESULTExample result — replace the inputs

Nominal packs per kg

125.00 packs/kg
Film weight per pack8.00 g/pack
Film area per pack0.1000 m²/pack

Nominal yield before process waste. Use the actual production web geometry, not only finished face dimensions.

THE CALCULATION

Packs/kg = 1,000 ÷ (width (m) × repeat (m) ÷ lanes × GSM)

1,000 ÷ (0.8 × 0.25 ÷ 2 × 80) = 125 packs/kg
Example result — replace the sample valuesThe formula works, but the values are illustrative.

Saved calculations stay in this browser. No account or cloud backup is created.

Save to a product project (optional)Choose or create a saved product project ↗

This is an illustrative example. Saved or transferred values must be checked against your job.

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Calculated from your inputs. Confirm specifications with your supplier.

How sensitive is this result to your assumptions?

Vary one input and inspect nominal packs per kg

All other entered inputs stay fixed. Ranges are your scenarios, not statistical confidence or supplier performance predictions. This uses the same validated calculator engine.

UNDERSTAND THE CALCULATION

The formula, made clear.

Area/pack = Width × Repeat ÷ Lanes; Packs/kg = 1,000 ÷ (Area/pack × GSM)

Full web width multiplied by repeat gives the area consumed by one machine repeat. Dividing by lanes allocates that area to one nominal pack. Multiplying by GSM gives grams per pack, and dividing 1,000 grams by that mass gives packs per kilogram. The web method captures film allocated to seals and layout margins when those are already present in the full width and repeat dimensions.

How to use this calculator

  1. 01

    Enter full purchased web width and the production repeat.

  2. 02

    Set the lane count and complete-film GSM.

  3. 03

    Review nominal units per kilogram before accounting for any additional process waste.

WORKED EXAMPLE

A calculation you can check

The example determines how many nominal pack allocations fit into a kilogram of the specified production web.

Web width
800 mm
Print / pack repeat
250 mm
Lanes across the web
2 lanes
Film GSM
80 g/m²
1,000 ÷ (0.8 × 0.25 ÷ 2 × 80) = 125 packs/kg
Nominal packs per kg125.00 packs/kg
HOW TO VERIFY THIS RESULT

Check the displayed formula and units against your quotation. Use measured GSM, net weight and actual layout dimensions where available. Default densities are planning assumptions, not certified material properties. Calculated cost does not certify strength, compatibility or safe loading.

Method, units and material assumptions ↗