Wing Loading Calculator
Find an aircraft's wing loading.
Wing loading is an aircraft's weight per unit of wing area, shaping its handling.
How the Math Works
Wing loading is calculated by dividing an aircraft's total weight by its wing area. This ratio, expressed in pounds per square foot (lbs/ft²) or newtons per square meter (N/m²), reveals how much weight each square foot of wing must support. A higher wing loading means the wings carry more weight per unit area, while a lower wing loading indicates the wings are distributing the load more generously. The formula is straightforward: Wing Loading = Weight ÷ Wing Area.
Practical Applications
To use this calculation practically, first determine the aircraft's weight in consistent units (pounds or kilograms) and measure the total wing area in corresponding units (square feet or square meters). For example, an aircraft weighing 2,400 lbs with a wing area of 120 sq ft yields a wing loading of 20 lbs/sq ft. Pilots use this value to assess performance characteristics such as takeoff distance, landing speed, and climb rate, as higher wing loadings typically require longer runways and faster approach speeds.
Day-to-Day Use
Understanding wing loading helps aviation enthusiasts and pilots make informed decisions about aircraft selection and flight operations. If you're considering buying a small aircraft, comparing wing loading values between different models can reveal which plane will have shorter takeoff requirements and gentler landing approaches. For student pilots, grasping this concept explains why some planes feel 'floaty' during landing while others require precise speed control. Even if you're not flying, this knowledge provides insight into why aircraft of different sizes can have surprisingly similar performance characteristics.
Worked example
1000 kg over 16 m² → 62.5 kg/m².
FAQ
What flies with low wing loading?
Gliders and light aircraft, giving gentle stall speeds.