Darcy's Law Calculator
Calculates flow rate using Darcy's Law. In head gradient mode: Q = K*A*(Δh/L) where K = kρg/μ
Calculation Mode
Pressure Drop (ΔP)
Hydraulic Head Gradient (Δh/L)
Parameter
Value
Unit
Permeability (k)
m²
Darcy
cm²
mm²
Cross-sectional Area (A)
m²
cm²
mm²
ft²
Pressure Drop (ΔP)
Pa
atm
bar
psi
Hydraulic Head Gradient (Δh/L)
m/m
ft/ft
Viscosity (μ)
Pa·s
cP
mPa·s
Density (ρ)
kg/m³
g/cm³
Length (L)
m
cm
mm
ft
Calculate
Result
Value
Unit
Volumetric Flow Rate (Q)
m³/s