Use this bean bag filling calculator to compute the amount of filling material required to adequately fill a bean bag chair using B = (L × W × H) / 50,000 formula.
This bean bag calculator simplifies the process by converting the physical dimensions of the bean bag—length, width, and height—into a volume measurement that can be translated into the number of filler bags needed.
If you have a spherical bean bag with a 36-inch diameter, the calculator will help determine the exact cubic feet or liters of filling needed, considering that bean bags typically require about 80-85% fill for optimal comfort.
Bean Bag Filling Calculator
- 10 ft bean bag typically requires around 3-4 bags of filling depending on its shape and desired firmness.
- An XXL bean bag generally needs about 4-5 bags, translating to approximately 300-400 liters of filling.
- A 6 ft bean bag usually requires around 2-3 bags, which equates to about 200-250 liters.
- 5 ft bean bag needs about 2 bags, or roughly 150 liters.
- A 7 ft bean bag requires around 3 bags, translating to about 250-300 liters.
| Bean Bag Size | Total Volume (cu ft) | 85% Fill Volume (cu ft) | EPS Beads Weight (lbs) |
|---|---|---|---|
| 10ft | 523.6 | 445.0 | 178-200 |
| 8ft (XXL) | 268.1 | 228.0 | 91-102 |
| 7ft | 179.6 | 152.7 | 61-68 |
| 6ft | 113.1 | 96.1 | 38-43 |
| 5ft | 65.4 | 55.6 | 22-25 |
| 4ft | 36.0 | 30.6 | 12-15 |
| 3ft | 19.0 | 16.2 | 6-8 |
| 2ft | 8.0 | 6.8 | 2-3 |
| 1ft (Mini) | 2.0 | 1.7 | 0.5-1 |
Bean Bag Filler Formula
The bean bag filler formula is as follows:
B = (L × W × H) / 50,000Consider a bean bag with dimensions:
- Length (L): 80 cm
- Width (W): 70 cm
- Height (H): 50 cm
Plugging these values into the formula gives:
B = (80 × 70 × 50) / 50,000 = 56This means you would need approximately 1.12 bags of 1 kg filler to achieve an optimal fill.
How much filler do I need for a bean bag?
Generally, most standard-sized bean bags require between 250 to 275 liters or about 9 cubic feet of filling material.
If your bean bag measures:
- Length: 100 cm
- Width: 80 cm
- Height: 60 cm
Using the formula:
B = (100 × 80 × 60) / 50,000 = 96This means you would need about 1.92 bags of filling.
How many cubic feet to fill a bean bag chair?
For a standard adult bean bag chair (40″ × 40″ × 40″):
- Apply fill factor (85%): 37.04 × 0.85 = 31.48 cubic feet
- Calculate the total volume: 40 × 40 × 40 = 64,000 cubic inches
- Convert to cubic feet: 64,000 ÷ 1,728 = 37.04 cubic feet
For a bean bag measuring 90 cm x 90 cm x 90 cm, first calculate the volume:
V = L × W × H = 90 × 90 × 90 = 729,000 cm³Now convert to cubic feet:
Cubic Feet = 729,000 / 28,316.8 ≈ 25.8 ft³Related Tools:
