Weber Number Calculator Density ρ (kg/m³): Velocity v (m/s): Diameter d (m): Surface tension σ (N/m): Calculate We View Live Weber Number Chart × Weber Number vs Droplet Diameter 12,000 GPM in an 8-inch pipe • Velocity ≈ 23.3 m/s • ρ = 1000 kg/m³ • σ = 0.03 N/m