Free tool
Balloon Arch Calculator
Estimate how many balloons, how much arch strip and how many glue dots you need for a garland or arch.
How it estimates
An organic-style garland uses roughly 10 balloons per foot for an airy look, about 14 for a standard full garland and around 18 for a dense photo backdrop. These are rules of thumb: inflation size changes everything, so a garland of slightly under-inflated 12 in balloons needs more of them.
| Balloon size | Share of total | Job |
|---|---|---|
| 18 in | About 10% | Anchors and focal points |
| 12 in | About 55% | The body of the garland |
| 5 in | About 35% | Fill gaps, added last with glue dots |
Arch strip length is the garland length plus 10% for the ends and hanging loops. Step-by-step setup is in the balloon arch strip guide, and a ready kit is in the 50 ft balloon arch strip with glue dots.