Drag Equation Calculator

Drag Force (F_d):

Drag Coefficient (C_d):

Fluid Density (ρ):

Cross-Sectional Area (A):

Flow velocity (v):

How This Is Calculated

$$ F_d = \frac{1}{2} C_d \rho A v^2 $$ where:

F_d = Drag Force (N)

C_d = Drag Coefficient (dimensionless)

ρ = Fluid Density (kg/m³)

A = Cross-Sectional Area (m²)

v = Flow velocity (m/s)

Assumptions

The fluid is incompressible.
The fluid is in a steady flow.
The flow is laminar.
There is no flow seperation.
There are no energy losses.

Related Calculators

Stokes Law for Spherical Drag