Drag Force Calculator

Calculate fluid dynamic drag forces using scientific formulas

Fluid Density (kg/m³)(ρ)

Air: 1.225 kg/m³, Water: 997 kg/m³

Velocity (m/s)(v)

Drag Coefficient(Cd)

Cross-sectional Area (m²)(A)

Object Shape

Sphere

Cd ≈ 0.47

Cylinder

Cd ≈ 0.82

Flat Plate

Cd ≈ 1.28

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Quick Tips

1Use consistent units throughout calculations
2Consider significant figures in results
3Document experimental conditions
4Verify results with control calculations