Drag Force Calculator
Online Drag Force Calculator
Drag Force Calculator
This free tool helps you calculate drag force quickly and accurately.
Enter air density, velocity, drag coefficient, and area to get the drag force in Newtons.
Useful for aerospace engineering, car design, cycling, and physics students.
kg/m³
m/s
-
m²
DRAG FORCE
0.00
N
Formula: Fd = ½ × ρ × v² × Cd × A
Frequently Asked Questions
What is drag force?
Drag force is the force that air (or any fluid) applies on an object moving through it. It slows down the object and depends on speed, shape, size, and air density.
What is the formula for drag force?
The standard formula is: Fd = 0.5 × ρ × v² × Cd × A
Where ρ is air density, v is velocity, Cd is drag coefficient, and A is the reference area.
Where ρ is air density, v is velocity, Cd is drag coefficient, and A is the reference area.
What are typical drag coefficient (Cd) values?
Common values: Sphere ≈ 0.47, modern car ≈ 0.25–0.35, airplane ≈ 0.02–0.05, skydiver ≈ 1.0.
What units does this calculator use?
Air density in kg/m³, velocity in m/s, area in m², and the result is shown in Newtons (N).
Is this calculator accurate?
Yes, it uses the exact standard drag force equation used by engineers worldwide.
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