Volumetric Flow Calculator

Calculate volumetric flow rate from pipe diameter and fluid velocity, with conversions between common flow units.

m/s
mm

Volume Flow Rate

0.05301 m³/s

Volume Flow Rate3,180.9 L/min
Volume Flow Rate840.3 GPM
Volume Flow Rate190.85 m³/h

Volume Flow Rate vs Fluid Velocity (V)

Vedi formula →

Formula

## Volumetric Flow Rate Volumetric flow rate is the volume of fluid passing through a cross-section per unit time. It is widely used in piping design, pump selection, and flow measurement. ### Formula **Q = V × A = V × pi × D² / 4** where V is the average fluid velocity and A is the pipe cross-sectional area. Different industries use different units: m³/h in process, L/min in hydraulics, GPM in plumbing.

Esempio Risolto

Water flowing at 3 m/s through a 150 mm pipe.

  1. 01D = 150 mm = 0.15 m
  2. 02A = pi × 0.15² / 4 = 0.01767 m²
  3. 03Q = 3 × 0.01767 = 0.05301 m³/s
  4. 04Q = 0.05301 × 60000 = 3180.9 L/min
  5. 05Q = 0.05301 × 15850.3 = 840.2 GPM