Bubble Wrap Calculator
Estimate bubble wrap length, area, roll count, and cost with a stated rectangular wrapping model and waste allowance.
Free to use · Calculated in your browserYour packing numbers
A is the chosen product axis. B and C are the other two dimensions. Each end flap is half the shorter side. The final seam is added once; the waste allowance is then applied to the entire cut.
How this result was calculated
- Use the product length across the roll. Minimum width = 0.3 + 0.1 = 0.4 m, allowing one half-short-side flap at each end.
- Continuous cut = 2 × (0.2 + 0.1) × 2 layers + 0.05 seam overlap = 1.25 m.
- Reserved length per product = 1.25 × (1 + 10%) = 1.375 m.
- Complete cuts per roll = floor(100 ÷ 1.375) = 72. Rolls = ceil(100 ÷ 72) = 2.
Detailed breakdown
| Wrapping dimension | Value |
|---|---|
| Product axis across roll | Length |
| Minimum sheet width (m) | 0.4 |
| Actual roll width (m) | 0.5 |
| Cut length before waste (m) | 1.25 |
| Reserved length per product (m) | 1.375 |
| Unused purchased length (m) | 62.5 |
Model: one continuous rectangular sleeve wrapped around two product axes, with folded end flaps. Each layer is a full perimeter; seam overlap is added once at the end of the continuous cut.
The width allowance is axial length plus the shorter cross-section dimension. It gives half that shorter side at each end for folding; test your closure and add allowance if extra end overlap is needed.
The model uses the full roll width and does not reuse offcuts or splice pieces across rolls. Waste is reserved per product, so roll counts respect full-sheet cuts.
Irregular shapes, bubble compression, layer thickness growth and extra protection are not modeled. Trial-wrap a sample before ordering.
How to use this tool
For the selected wrapping axis, required sheet width = axial dimension + shorter cross-section dimension. Cut length = 2 × (cross-section dimensions added together) × layers + seam overlap. Reserved length per piece = cut length × (1 + waste fraction). Whole pieces per roll = floor(roll length ÷ reserved length); round required rolls up.
A worked example
Wrap along the 30 cm axis of a 30 × 20 × 10 cm product. One layer with 5 cm seam overlap needs a 65 cm cut and at least 40 cm roll width. Ten products with 10% waste reserve 7.15 m. A 10 m roll supplies 13 complete reserved pieces, so one roll is enough.
Put the result to work
This estimator assumes rectangular products and the wrapping method described below. Bubble height, compressed thickness, irregular shapes, seam placement, and handling can change material use. Confirm coverage on a sample and allow for unusable offcuts.
Read the complete guideCommon questions
Is surface area enough to estimate a roll?
No. A wrapping sheet needs seams, overlap, and end coverage, and roll width can leave offcuts. Required linear roll length is often the more practical purchasing figure.
Why does roll width affect fit?
The roll must cover the product along the wrapping axis plus the modeled end folds. If it is too narrow, try another axis or a wider roll. This model does not join narrow strips.
Does the result guarantee protection?
No. Material quantity does not establish cushioning performance. Choose and test protection for the product's weight, fragility, and handling environment.