How much helium do I need?

Modified on Sat, 24 May at 11:37 AM

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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