The calculation, without hidden assumptions
Estimate the material mass of a regular slotted carton from the paper specification instead of guessing a generic tare. Enter finished box dimensions, liner and medium GSM, your board supplier’s flute take-up factor, joint tab and converting allowances. MAXScanner exposes the estimated blank, combined board grammage, per-box mass and batch material.
How to use this calculator
Enter finished carton length, width and height using one dimension unit.
Enter the outer liner, inner liner and corrugating-medium grammages from the board specification.
Enter the measured or supplier-specified flute take-up factor; do not assume one value fits every flute and machine.
Enter joint-tab and converting allowances that match your supplier dieline or estimating convention.
Review the blank dimensions, combined GSM, per-box mass and batch material before using the estimate for costing or freight planning.
Where people use it
- •Estimate empty-carton tare before physical samples arrive.
- •Compare paper combinations during packaging development.
- •Estimate corrugated material kilograms for a production quantity.
- •Feed a better carton-tare estimate into Pieces per Carton and freight planning.
400 × 300 × 250 mm single-wall RSC
With 150 GSM outer and inner liners, 120 GSM medium, a 1.40 take-up factor, 8 GSM glue contribution, a 40 mm joint tab and no extra converting allowance, the estimated blank is 1,440 × 550 mm. Combined board grammage is 476 GSM and estimated box mass is about 377 g.
What the result does not assume
- •This is an RSC planning model, not a production dieline generator. Use the converter’s actual CAD/dieline for purchasing.
- •Flute take-up varies with flute geometry, corrugator setup and board specification. Keep the factor editable and replace the default with supplier data.
- •Finished inside, outside and score-to-score dimensions are not interchangeable; use one dimension convention consistently and let entered allowances bridge to your blank estimate.
- •Moisture, coatings, print, wax, tape, staples, stitching, trim, slots and adhesive can change finished mass. Verify production cartons on a calibrated scale.
- •This calculator estimates material mass, not ECT, burst strength, compression strength or safe product load.
Frequently asked questions
How is corrugated box weight calculated?+
Estimate the flat blank area, estimate combined board grammage from liners plus flute medium adjusted by its take-up factor, then multiply area in square metres by grams per square metre.
Why is flute take-up factor needed?+
The corrugating medium follows a wave rather than a straight line, so more medium paper is consumed than the flat board length. The actual factor depends on flute geometry and production conditions.
Can I use this for 5-ply or 7-ply board?+
This owner models a two-liner, one-medium single-wall board transparently. Multi-wall boards need additional liner/medium layers and potentially different take-up factors; do not fake them by multiplying a single-wall result.
Are the blank dimensions exact?+
No. They are an RSC estimating geometry. Manufacturer score allowances, slots, trim and joint construction differ, so production work should use the supplier dieline.
Does this calculate dimensional shipping weight?+
No. This estimates empty corrugated material mass. Use the Dimensional Weight Calculator for carrier volumetric billing.
Can I estimate material cost?+
Yes. Enter your material cost per kilogram and the calculator multiplies it by estimated batch corrugated mass. It does not add conversion, printing, tooling, freight, tax or margin.
Semantic next steps
Continue the calculation
These links move to a different input, formula or project stage rather than a keyword variation of this page.
Pieces per Carton Calculator — Units, Fit & Boxes Needed
Calculate how many identical rectangular products fit in a master carton using permitted 90-degree orientations, then check gross-weight capacity, volume fill and cartons needed.
OpenDimensional Weight Calculator — Volumetric & Chargeable Weight
Calculate dimensional (volumetric) and chargeable shipping weight from parcel dimensions, actual weight, quantity and an editable DIM divisor.
OpenCBM Calculator — Carton & Shipping Volume in m³
Calculate carton CBM and total shipment volume from packed dimensions and quantity. Convert mm, cm, m, inches or feet to m³, ft³ and litres, with optional gross-weight and volume-rate planning.
OpenPallet Calculator — Boxes per Pallet, TI-HI, Weight & Pallets Needed
Calculate cartons per pallet from box dimensions, pallet footprint, loaded-height and gross-weight limits. Get TI-HI, coverage, limiting constraint and pallets required.
OpenPackage Girth Calculator — Length + Girth for Shipping
Calculate package girth and combined length plus girth from three box dimensions in any order. Compare the result with an optional limit from your current carrier service guide.
OpenFreight Density Calculator — lb/ft³, kg/m³ & Estimated NMFC Class
Calculate LTL freight density from packaged dimensions, weight and quantity, then see the matching 2025 NMFC full-density class band with metric and imperial totals.
OpenAir Freight Cost Calculator — Chargeable Weight & Quote Breakdown
Estimate air freight from carton dimensions, actual weight and your quoted rate per kg. Compare volumetric vs actual chargeable weight, then model fuel, security, handling, documentation and a minimum charge.
OpenRecipe Scaling Calculator — Fractions, Servings & Ingredient List
Scale a pasted ingredient list from original to target servings, parse common decimals, fractions, mixed numbers and Unicode fractions, and return practical scaled quantities without pretending cooking time scales linearly.
OpenMore in this calculator collection
Browse nearby calculators in the same topic cluster so related pages reinforce each other instead of sitting as isolated URLs.
Free publisher widget
Put this calculator on your website
Give readers the live calculator without rebuilding the math. Copy the responsive embed in one click, or customize width, height, border and corner radius before publishing. The branded MAXScanner attribution stays visible.
Calculator embed HTML
Paste this code into your page. Focus the code box to select it manually.
Keep the result connected to the real job
MAXScanner keeps the formula and assumptions beside the result so you can verify the number before using it in a drawing, estimate, specification, worksheet or document. Where a supplier, manufacturer, drawing or applicable standard owns a requirement, that source remains authoritative.