Balloon Calculator | Know the Cubic Feet of Helium for Different Balloon Sizes.
Planning a party or event with helium balloons? Knowing how much helium you need is essential to avoid surprises and ensure that your balloons float perfectly. We simplify it for you by putting a balloon calculator on the top of this page and also this blog post will guide you through the process of calculating the cubic feet of helium required for different balloon sizes. if you wish to order the size you need click here to fill-up the helium rental form online and we will call you or simply give us a call to order one at tel. (718) 787-4477
The Balloon Calculator
Why Does Balloon Size Matter?
The amount of helium required depends on the size of the balloon. Larger balloons need more helium to fill them up, while smaller balloons require less. Calculating the exact cubic feet of helium ensures that your balloons float correctly and saves you from wasting helium.
Basic Formula for Helium Calculation
The general formula to calculate the volume (in cubic feet) of helium needed for a balloon is:
Volume (V) = (4/3) × π × r³
Where:
V is the volume of helium in cubic feet.
π is a constant (approximately 3.14159).
r is the radius of the balloon (half of the balloon’s diameter).
Common Balloon Sizes and Their Helium Requirements
9-Inch Balloon
A 9-inch balloon is a popular choice for small events. Here’s how to calculate the helium required:
Diameter (d) = 9 inches (0.75 feet)
Radius (r) = 0.375 feet
Using the formula:
V = (4/3) × π × (0.375)³
V ≈ 0.22 cubic feet of helium
12-Inch Balloon
The 12-inch balloon is slightly larger and perfect for most parties.
Diameter (d) = 12 inches (1 foot)
Radius (r) = 0.5 feet
Using the formula:
V = (4/3) × π × (0.5)³
V ≈ 0.52 cubic feet of helium
18-Inch Balloon
An 18-inch balloon creates a more dramatic effect.
Diameter (d) = 18 inches (1.5 feet)
Radius (r) = 0.75 feet
Using the formula:
V = (4/3) × π × (0.75)³
V ≈ 1.77 cubic feet of helium
24-Inch Balloon
For large events, a 24-inch balloon is often used.
Diameter (d) = 24 inches (2 feet)
Radius (r) = 1 foot
Using the formula:
V = (4/3) × π × (1)³
V ≈ 4.19 cubic feet of helium
Tips for Accurate Helium Calculation
Consider Balloon Shape: Not all balloons are perfectly round, which might slightly affect the calculation.
Account for Deflation: Balloons naturally lose helium over time, so it’s wise to fill them with a bit more helium than calculated.
Multiple Balloons: Multiply the volume by the number of balloons to find the total helium needed.
FAQ About Helium Tank Sizes and Balloon Capacity
- How many balloons does a helium tank fill?
- how many balloons can be filled with a helium tank?
- how many balloons can a tank of helium fill?
- how many balloons can a helium tank helium fill?
| Tank Size Cubic Feet | 9” Balloons Fills Approx.** | 11” Balloons Fills Approx.** | 16 or 17” Balloons Fills Approx.** |
| 291 C.F. | 1164 | 582 | 194 |
| 244 C.F. | 976 | 488 | 162 |
| 160 C.F. | 640 | 320 | 106 |
| 110 C.F. | 440 | 220 | 72 |
| 81 C.F. | 324 | 162 | 54 |
| 55 C.F. | 220 | 110 | 36 |
| 40 C.F. | 160 | 80 | 26 |
| 21 C.F. | 84 | 42 | 14 |
Conclusion
By knowing how to calculate the cubic feet of helium required for various balloon sizes, you can better plan your event and ensure everything goes smoothly. Whether you’re filling 9-inch balloons or 24-inch ones, understanding these calculations will make your party preparation easier.
