Standards-compliant calculators for air systems technicians in NZ & Australia. Free, no signup required. Works on mobile.
Check IRD for your bracket.
10–20% is typical for a sole trader.
Dedicated calculators for air systems technicians. Bookmark the ones you use most.
Required Free Air Delivery from tool demand, duty cycle, leakage and safety factor. L/min and CFM.
DN pipe size and pressure drop from flow, run length and operating pressure. Rohrback formula.