When inflating balloons with helium, it is important to know how much gas each balloon size requires. Different sizes of balloons require different amounts of helium.
Disclaimer: Smaller size latex and foil balloons will not float with helium. For example, a 5" latex balloon will not float with helium, this is because the weight of the balloon will be heavier than the helium weight, causing the balloon to sink.
Small Airfill balloons cannot be inflated with helium, they are intended to be inflated with air only. Please ensure to read the additional product details carefully to learn more. (See the image below)
Helium Balloon Chart
Common Sizes are listed below.
| 18-inch Foil (Mylar) Helium Balloons | 0.50 Cubic Feet |
| Jumbo Foil (Mylar) Helium Balloons | 1 to 2.5 Cubic Feet |
| 9-inch Latex Helium Balloons | 0.25 Cubic Feet |
| 11-inch Latex Helium Balloons | 0.50 Cubic Feet |
| 17-inch Latex Helium Balloons | 2 Cubic Feet |
| 3-foot (inflated to 2.5 to 3 feet) | 8 to 15 Cubic Feet |
See the attached PDF document to view the Helium Calculator.
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