Mechanical & HVAC engineering
Airflow, ducts, pipes and pump sizing helpers for mechanical/HVAC workflows.
Practical tools
Air Changes (ACH) to Airflow Calculator
Convert room volume and air changes per hour into ventilation airflow in m³/h and L/s.
Browse calculatorsPractical toolsDuct Air Velocity Calculator
Calculate duct cross-section area and air velocity from airflow and duct dimensions.
Browse calculatorsPractical toolsPipe Flow Velocity Calculator
Calculate internal pipe velocity from volumetric flow and inside diameter.
Browse calculatorsPractical toolsPump Hydraulic Power Calculator
Estimate hydraulic and input shaft power from flow, head, fluid density and efficiency.
Browse calculators