Drag Equation Calculator

Calculate the drag force (air resistance or fluid resistance) exerted on an object moving through a fluid environment. Perfect for aerodynamics, automotive engineering, and physics problems.

Drag Equation Calculator

e.g., 1.225 for air at sea level
Speed of the object relative to the fluid
Dimensionless number (e.g. 0.47 for a sphere)
Cross-sectional area

How to Use

  1. 1

    Enter Fluid Density

    Input the density of the fluid (e.g., air is about 1.225 kg/m³, water is 1000 kg/m³).

  2. 2

    Enter Velocity & Drag Coefficient

    Input the relative velocity between the object and fluid, and the shape's drag coefficient.

  3. 3

    Enter Reference Area

    Input the frontal cross-sectional area of the object, then click calculate to find the drag force in Newtons.

Frequently Asked Questions

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