Plan the balloons before the party, not halfway through inflating them.
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About this tool
How it works
The calculator approximates the arch as half an ellipse, then applies balloon size and packing density. Real totals vary with inflation, overlap, clusters, and frame shape.
Example
A 3 m wide, 2.4 m high standard arch using 28 cm balloons needs a practical estimate plus a spare allowance.
Private by default
The calculation or transformation happens in this browser. There is no account, and the values you enter are not sent to NaughtyBear Labs.
How to use Balloon Arch
- Enter the arch width and height, then choose the main balloon size.
- Select a packing style and spare allowance that suits the design.
- Use the total and colour split as a shopping estimate, rounding up to available pack sizes.
Common questions
- How accurate is a balloon arch estimate?
- It is a planning estimate. Frame shape, balloon inflation, cluster size, overlap, and organic styling all change the real total.
- Should I buy spare balloons?
- Yes. Spares cover breakage, uneven sizes, colour balancing, and last-minute design changes.