calcs.homes
calcs.homes
Enter your bean bag's diameter to estimate how much filler you need to refill it or top it off.
Estimate only — assumes a roughly spherical bag shape; actual fill varies by bag style.
We treat a fully filled bean bag as a sphere and calculate its volume, then apply your fill percentage — bean bags are deliberately under-filled to 60-70% of their full geometric volume so the fill can shift and mold to your body instead of sitting rock-hard.
An overfilled bean bag becomes stiff and doesn't conform to your body — leaving room for the fill to move is what makes a bean bag comfortable.
Measure straight across the widest point of the bag when it's fully filled and sitting on the floor — most manufacturers also list this in the product size chart.