What Size Helium Tank Do I Need to Fill 50 Balloons?

Planning a party with balloons is always exciting — but one of the most common questions is: what size helium tank do I need to fill 50 balloons? Choosing the right size ensures your balloons float perfectly without wasting helium.

Helium Tank Size for 50 Balloons

On average, a standard 9-inch to 12-inch latex balloon requires about 0.5 cubic feet of helium. This means to inflate 50 balloons, you’ll need a helium tank with at least 25 cubic feet capacity.

• Small Tank (14.9 cu. ft) – Inflates about 27–30 balloons.
• Medium Tank (25–30 cu. ft) – Inflates around 50 balloons, perfect for small parties.
• Large Tank (60+ cu. ft) – Ideal for events with 100+ balloons.

Pro Tip

If you’re planning more decorations like balloon arches or combining latex with foil balloons, go for a slightly larger helium tank so you don’t run out halfway.

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Conclusion

For 50 balloons, a 25–30 cu. ft helium tank is the best fit. Always plan ahead and consider extras for last-minute adjustments.