RC Airplane Wing Loading Calculator

Calculate wing loading, stall speed, and flying characteristics for RC airplanes based on weight and wing area.

Total Weight (oz)

Wing Area (sq inches)

Airfoil Type

Tab to move between fields

Wing Loading (oz/sq ft)

11.5

Maneuverability (1-5)

Est. Stall Speed (mph)5.4

Cruise Speed (mph)8.1

Flying Style Code1

How to Use This Calculator

Enter Total Weight (oz), Wing Area (sq inches), and Airfoil Type.
Set Flat bottom (trainer), Under-cambered (slow flyer), and Semi-symmetrical (sport).
Adjust Symmetrical (aerobatic) as needed.
Review Wing Loading (oz/sq ft) and Maneuverability (1-5).
Use Est. Stall Speed (mph) and Cruise Speed (mph) to inform your decision.

How the result changes with Wing Area (sq inches)

Total Weight (oz): Total all-up flying weight including battery in ounces
Wing Area (sq inches): Total wing area in square inches (span x average chord)
Airfoil Type: Airfoil profile affects lift and stall characteristics

Identify Input Parameters
Total Weight (oz) = 32, Wing Area (sq inches) = 400, Airfoil Type = 3 = 3 input(s) provided
Calculate Wing Loading
Wing Loading
11.5 = 11.5
Calculate Maneuverability
4 = 4
Calculate Est. Stall Speed
Est. Stall Speed
5.4 = 5.4
Calculate Cruise Speed
Cruise Speed
8.1 = 8.1

Engine last updated July 28, 2026. Checked against 2 independently-derived tests — how we verify calculators.

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