Wing Loading Calculator

What Is a Wing Loading Calculator?

The Wing Loading Calculator divides an aircraft's weight by its wing area. Wing loading drives stall speed, takeoff and landing distance, turn performance, and gust response. Low wing loading means a slow, floaty aircraft, while high wing loading suits fast, stable designs.

How the Calculation Works

Wing loading is simply weight per unit of wing area:

$$W/S = \frac{W}{S}$$

The calculator converts weight and area into consistent units before dividing. Weight can be entered in pounds, kilograms, or newtons, and area in square feet or square meters. It then reports the result in both kg/m² and lb/ft².

Worked Example

A light aircraft weighing 2,000 lb with 200 ft² of wing area has:

$$W/S = \frac{2000}{200} = 10 \text{ lb/ft}^{2}$$

Converting to metric gives about 48.8 kg/m². A glider might sit near 7 lb/ft², while an airliner climbs above 100 lb/ft², so the same number tells a very different performance story.

Related free tools

The Wind Load Calculator turns wind speed into force, and the True Airspeed Calculator corrects airspeed for altitude.