Helium Canister Guide
A disposable helium cylinder is the easiest way to float balloons at home. This guide covers how many balloons each size fills, how to use one safely and what to do with it afterwards.
How many balloons per canister
As a guide, a standard disposable cylinder fills roughly 30 x 9in latex balloons, and a larger cylinder around 50. Foils and bigger latex use more gas, so you will get fewer. Always check the pack, as fill counts assume you do not over-inflate.
Using it safely
- Use in a well-ventilated room, never inhale helium.
- Sit the cylinder upright on a flat surface.
- Press the nozzle gently to release gas, and stop when the balloon is firm.
- Keep away from children during inflation.
Frequently asked questions
Can I keep a part-used cylinder?
Yes, close the valve fully and store upright. The gas keeps, though it can slowly seep over weeks.
How do I dispose of an empty cylinder?
Release any leftover gas outdoors, then recycle it with scrap metal at your local recycling centre.
Shop helium cylinders and the balloons to float with them.