RC Float Sizing Calculator

What this calculator does

This tool is useful for pilots adding floats to a landplane, designing custom foam or balsa floats, or checking whether a float set is close to the required size. Enter the airplane length, wingspan, and prop-to-CofG distance, then review estimated float length, height, width, separation, curved nose section, and step location. Example: if a model has a long nose and the CofG is far behind the prop, the step and mount location must still place the airplane properly on the floats. Use the calculator as a starting point, then adjust for hull shape, finished model weight, water conditions, and real taxi testing. Float installation still requires judgment, but this gives a useful first layout.

In practical terms: It estimates starting RC float dimensions and step placement based on aircraft length, wingspan, and CofG position.