Physics

Drag Equation Calculator

Find aerodynamic drag force on a moving object.

Fluid density (kg/m³)

Velocity

Drag coefficient

Frontal area

Calculated Output

Drag force (N) 330.75

Formula: F = ½·ρ·v²·Cd·A

Step-by-Step Breakdown

1. Values used:

2. Fluid density = 1.225 kg/m³

3. Velocity = 30

4. Drag coefficient = 0.3

5. Frontal area = 2

7. Drag force = 330.75N

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The math behind it

F = ½·ρ·v²·Cd·A. Drag rises with the square of speed, which is why high speeds are so costly.

Car at 30 m/s (Cd 0.3, A 2 m²) → about 331 N.

Why does fuel use jump on the highway?

Drag grows with v², so it dominates at high speed.