About this calculator
Estimate strapping from two explicit rectangular vertical loop routes around loaded pallets. Length-height loops and width-height loops can have different counts; every loop includes its joint allowance.
Inputs
How to use this calculator
Loaded pallet group
- Outer loop length span (in)Actual horizontal span of the length-height loop, including any pallet route.
- Outer loop width span (in)Actual horizontal span of the width-height loop.
- Outer loop vertical span (in)Include the full under-pallet/over-load route where applicable.
- Identical palletsA whole non-negative count.
Shared inputs
- Length–height loops per palletEach loop follows 2 × (length + height), plus joint allowance.
- Width–height loops per palletEach loop follows 2 × (width + height), plus joint allowance.
- Extra length per joint (in)Your measured overlap/sealing allowance, once per loop.
- Additional allowance (%)Applied to the calculated total. This is an editable example, not a material performance standard.
- Usable strap length per roll (in)Enter in the selected length unit; 3,600 in = 300 ft. No roll size standard is assumed.
Enter the shipment or scenario values, then select Calculate result.
Method
Formula and variables
Per pallet = length-loop count × [2 × (length + height) + joint] + width-loop count × [2 × (width + height) + joint]. Multiply group quantities and sum. Add allowance, then round total length ÷ usable roll length upward.
- Outer loop length span (in)
- Actual horizontal span of the length-height loop, including any pallet route.
- Outer loop width span (in)
- Actual horizontal span of the width-height loop.
- Outer loop vertical span (in)
- Include the full under-pallet/over-load route where applicable.
- Identical pallets
- A whole non-negative count.
- Length–height loops per pallet
- Each loop follows 2 × (length + height), plus joint allowance.
- Width–height loops per pallet
- Each loop follows 2 × (width + height), plus joint allowance.
- Extra length per joint (in)
- Your measured overlap/sealing allowance, once per loop.
- Additional allowance (%)
- Applied to the calculated total. This is an editable example, not a material performance standard.
- Usable strap length per roll (in)
- Enter in the selected length unit; 3,600 in = 300 ft. No roll size standard is assumed.
Interpret the result
Total length includes the entered allowance. The roll count pools total length and can understate purchases when offcuts cannot form complete loops.
Outputs: Total strap length and minimum roll count
Two rectangular vertical routes only. No horizontal belly band, corner path, feed-path geometry, tension, strap strength or securement compliance. A loop longer than a roll is rejected. Minimum rolls by total length can understate purchases when offcuts cannot form complete loops; no cutting-stock solver is used.
Worked example
Check the arithmetic
This example uses the starting values shown above. The arithmetic below is calculated independently of the interactive result.
Work through the calculation
- Length loop = 2 × (48 + 54) + 12 = 216 in; width loop = 2 × (40 + 54) + 12 = 200 in.
- Two loops each way: 2 × 216 + 2 × 200 = 832 in per pallet; ten pallets = 8,320 in.
- With 10% allowance: 9,152 in ÷ 12 = 762.666667 ft. Roll minimum = ceil(9,152 ÷ 3,600) = 3.
Compare the displayed result
Expected displayed result: 762.667 ft
FAQs
Does the roll count include a cutting plan?
No. It is a total-length lower bound. A complete loop must fit on a roll, and unused offcuts may require additional rolls.
Example inputs and options
Starting values are examples unless a field identifies a dated rule. Unit selectors convert only fields marked for conversion. Rates and model options keep the units and basis shown in their labels.
- Outer loop length span (in)
- Example: 48
- Outer loop width span (in)
- Example: 40
- Outer loop vertical span (in)
- Example: 54
- Identical pallets
- Example: 10
- Length–height loops per pallet
- Example: 2
- Width–height loops per pallet
- Example: 2
- Extra length per joint (in)
- Example: 12
- Additional allowance (%)
- Example: 10
- Usable strap length per roll (in)
- Example: 3600