Practical tape, manufacturing and procurement calculators — roll length, roll diameter, roll weight, grammage, slitting yield, tape consumption and carton sealing. Everything runs in your browser; nothing is sent anywhere.
Wound tape length from roll outer diameter, core diameter and tape thickness.
Assumes a tight, gap-free wind. Total thickness = backing + adhesive.
Finished roll outer diameter from wound length, core diameter and tape thickness.
Inverse of the length calculation; useful for checking build against a target OD.
Approximate roll weight from length, width, thickness and material density.
Density guide: PVC ≈ 1.3, PET ≈ 1.4, PP/BOPP ≈ 0.91, paper ≈ 0.8. Excludes liner unless included in thickness.
Grammage (GSM) of a film or coating layer from its thickness and density.
Use adhesive density + dry coat thickness for adhesive coat weight; film density + film thickness for backing GSM.
Finished rolls from one jumbo — slit lanes across the width, cut lengths down the roll.
Lanes are whole; leftover width becomes trim. Finished rolls = lanes × whole cut lengths per lane.
Monthly and annual tape demand from a daily usage rate, plus a suggested reorder quantity.
Assumes 12 months per year. Suggested reorder covers one month plus a 20% safety buffer.
Total sealing tape for a carton run, from box length, tab overlap, seal pattern and quantity.
Tape per strip = carton length + two tabs. Seal pattern sets strip count: 1 (top), 2 (top & bottom), 6 (H-tape).
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