How to Choose the Right Helium Tank for Balloons (UK Guide)

  • GreatWhip.UK

Introduction

Planning a party and not sure which helium tank to choose? You’re not alone. Most people don’t think in “litres of helium” — they think in how many balloons they need. Picking the wrong tank can mean running out halfway through your decorations… or paying for more than you actually need. In this guide, we’ll make it simple. By the end, you’ll know exactly which helium tank size is right for your party.

Start With Your Balloon Count

Before choosing a tank, ask yourself one simple question:

👉 How many balloons do you need?

Here’s a quick guide:

  • 10–20 balloons → Small setup
  • 30–50 balloons → Medium party
  • 50–80 balloons → Large decoration
  • 80+ balloons → Event or big celebration

💡 Most home parties fall in the 30–50 balloon range

Helium Tank Sizes Explained (UK)

In the UK, disposable helium tanks are usually sold in litres (L) rather than cubic feet.

Here’s how the common sizes compare:

Small Tank – 7L

  • Fills: ~20–30 balloons (9–11 inch)
  • Best for: small birthdays or last-minute decorations

Medium Tank – 13L

  • Fills: ~30–50 balloons
  • Best for: most home parties
    ⭐ Most popular choice

Large Tank – 22L

  • Fills: ~50–80 balloons
  • Best for: weddings, big events, balloon arches

Choose Based on Your Event Type

Different occasions need different setups.

  • 🎂 Birthday Party
    → Usually 30–50 balloons → 13L tank is ideal
  • 🎃 Halloween / Themed Party
    → More decorations → 13L or 22L
  • 💍 Wedding / Large Event
    → Balloon arches & centrepieces → 22L tank

💡 If you’re unsure, it’s safer to go one size up.

Balloon Size Matters (Most People Miss This)

Not all balloons use the same amount of helium.

  • 9 inch balloons → use less helium
  • 11 inch balloons → standard
  • 16 inch balloons → use much more

👉 This means:

Bigger balloons = fewer balloons per tank

So if you’re planning large or foil balloons, always choose a larger tank.

Disposable vs Refillable Tanks

For most UK customers, disposable helium tanks are the better choice.

Why?

  • No refilling needed
  • Easy to use at home
  • No rental or return hassle
  • Ready out of the box

👉 Perfect for one-time events and parties

Pro Tips Before You Buy

  • Always buy 10–20% extra capacity
  • Don’t overfill balloons (they pop easily)
  • Use balloons on the same day for best float time
  • Store tank at room temperature

Recommended Helium Tank for Home Use

If you just want a quick answer, here’s what we recommend:

👉 For most customers, the 13L helium tank offers the best balance of size, price, and flexibility.

Final Thoughts

Choosing the right helium tank doesn’t have to be complicated.

Just remember:
👉 Start with your balloon count
👉 Match it to the tank size
👉 Go slightly bigger if unsure

That way, your decorations go smoothly — and your party looks exactly how you imagined.

FAQ

How many balloons can a helium tank fill?
It depends on the tank size. A 7L tank fills around 20–30 balloons, a 13L tank fills 30–50 balloons, and a 22L tank can fill up to 80 balloons.
What size helium tank do I need for 50 balloons?
For around 50 standard balloons, a 13L tank is usually enough. If you're using larger balloons or want extra capacity, choose a 22L tank.
Are disposable helium tanks easy to use?
Yes. Disposable helium tanks are designed for home use. Simply attach the nozzle, open the valve, and inflate your balloons.
How long do helium balloons last?
Latex balloons typically float for 6–12 hours, while foil balloons can last several days depending on conditions.