01
Cardboard box weight formula
Convert the full flat blank dimensions to metres, multiply them for square metres, then multiply by combined-board grams per square metre.
CalculatorsFREE · NO SIGNUP
Cardboard Box Weight Calculator
Estimate empty corrugated-box weight from the supplier's flat blank dimensions, combined-board grammage, and box quantity.
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01 USE IT NOW02 NO ACCOUNT03 FIELD NOTES BELOW
WORKING INPUTS
Use the flat converting blank, not assembled box dimensions.
LIVE RESULT
Estimated weight per box
385.00 gBlank-board estimate only; finishing, moisture, adhesive, and manufacturing tolerances are excluded.BLANK AREA0.7000 m²
COMBINED BOARD550 g/m²
BATCH WEIGHT38.50 kg
BOX QUANTITY100
59
THE WEIGHT STARTS FLAT
Measure the board before it becomes a box.
A supplier dieline gives the flat area that actually consumes corrugated board. Multiplying that area by combined-board grammage produces a transparent tare estimate.
WORKING VIEW
385.00 G PER BOX0.70 M² BLANK · 550 GSM
METHODblank area × combined-board grams per square metre
WORKING NOTE38.50 kg across 100 boxes
INPUTS → CLEAR OUTPUT
THE FIELD NOTES
Quick answer above. Better decisions below.
Use the result now, then read the practical notes for assumptions, examples, limitations, and the choices behind it.
0.70 M² BLANK · 550 GSM385.00 G PER BOX
38.50 kg across 100 boxes
02
Use the supplier blank dimensions
Assembled length, width, and height do not uniquely determine the converting blank because box styles, flaps, joints, and allowances differ.
03
Use combined-board grammage
Enter the measured or declared grammage of the finished corrugated board rather than a single liner's paper weight.
04
Treat the result as a tare estimate
Tape, glue, print, coatings, moisture, tolerances, handles, and inserts can change the finished carton weight.
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Cardboard box weight formula
Convert the full flat blank dimensions to metres, multiply them for square metres, then multiply by combined-board grams per square metre.
Multiply the unrounded per-box weight by quantity for the batch total.
Use the supplier blank dimensions
Assembled length, width, and height do not uniquely determine the converting blank because box styles, flaps, joints, and allowances differ.
Use the dieline or specification for the exact box construction.
Use combined-board grammage
Enter the measured or declared grammage of the finished corrugated board rather than a single liner's paper weight.
Flute take-up, adhesive, liners, and medium affect the combined value.
Treat the result as a tare estimate
Tape, glue, print, coatings, moisture, tolerances, handles, and inserts can change the finished carton weight.
Weigh a production sample when shipping or compliance decisions require an exact tare.
Questions, answered.
How do I calculate cardboard box weight?
Multiply the flat blank area in square metres by the combined-board grammage in grams per square metre.
Can I use assembled box dimensions?
Not reliably. Different box styles create different flap, joint, and waste areas, so use the supplier's flat blank or dieline dimensions.
Does the estimate include tape and printing?
No. Tape, extra glue, coatings, ink, moisture, tolerances, inserts, and other finishing can change the actual tare weight.
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