Vinyl decal roll length calculator
Plan a regular grid of identical decals across a vinyl roll, including gaps and leader waste.
Your measurements
01 / INPUTUse the units shown beside each field. Whole counts must be whole numbers.
Your result
02 / PLANNo saved baseline.
What changes when…
Baseline comparison
Save a baseline, then change your inputs. The difference is current minus baseline. Saved values stay in this browser.
| Result | Baseline | Current | Difference |
|---|
Use the result
Check that at least one decal fits across, then add the cutter’s feed allowance before ordering a roll.
Assumptions that matter
- If the across-roll result is zero, the chosen orientation does not fit; the length result is not a feasible cutting plan.
- Use the cutter’s usable width after pinch-roller exclusions.
- Weeding borders and registration marks need their own allowance in decal size or gap.
- Grain, pattern direction or adhesive orientation can prevent rotation.
Common questions
How is the result calculated?
The formula reference shows every equation and defines the input variables. Whole-item results explicitly round to whole quantities where needed.
How should I use the example?
The initial numbers are a worked example. Replace them with measurements from your own project before making a plan. Three calculated scenarios appear on the examples page.
Can I compare two plans?
Yes. Save a baseline, change one or more inputs, and compare the result table. The chart changes only one input at a time.
Does this upload my measurements?
No. Calculations run in this browser. Saving a baseline uses local browser storage; the scenario-link button includes entered numbers in a URL fragment you choose to share.
Need a paper record? Use the measurement worksheet.