Engineering calculator collection
Aerodynamics Calculators
Free aerodynamics calculators for aircraft, UAV and fluid-flow design, including lift, drag and Reynolds number.
Wing Loading Calculator
Calculate mass-based wing loading.
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Aspect Ratio Calculator
Calculate wing aspect ratio AR = b² / S.
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Dynamic Pressure Calculator
Calculate q = ½ρV².
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Lift Calculator
Calculate aerodynamic lift L = ½ρV²SCₗ.
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Drag Calculator
Calculate aerodynamic drag D = ½ρV²SCᴅ.
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Stall Speed Calculator
Estimate stall speed from mass, air density, wing area and Cₗmax.
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Reynolds Number Calculator
Calculate Reynolds number Re = ρVL / μ.
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Lift Coefficient Calculator
Calculate aerodynamic lift coefficient from lift force, dynamic pressure and reference area.
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Drag Coefficient Calculator
Calculate aerodynamic drag coefficient from drag force, dynamic pressure and reference area.
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