What this calculator does
Balloon arch balloon count works out balloons needed for a single-row or garland balloon arch from its size and balloon diameter. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaArch length L = h+w (wide arch), 1.5h+w (roughly square), or 2h+w (tall arch); single row N = 0.87×L/d; garland N = 4.8×L/d (4-per-cluster) or 6.3×L/d (5-per-cluster)
The inputs explained
| Field | What to enter |
|---|---|
| Arch height (ft) | A number, measured in ft. Starts at 8. |
| Arch width (ft) | A number, measured in ft. Starts at 6. |
| Balloon diameter (in) | A number, measured in in. Starts at 11. |
| Arch style | Choose from Single row, Garland, 4 balloons per cluster, Garland, 5 balloons per cluster. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with arch height
Every other input is held at the calculator’s starting values while arch height varies. Select any row to load that scenario into the calculator.