Standards-compliant calculators for mechanics in NZ & Australia. Free, no signup required. Works on mobile.
Each calculator opens on its own page — bookmark the ones you use most.
Oil capacity for full service, oil-only drain or top-up. Petrol and diesel vehicles, filter allowance included.
Max load per tyre, total load and recommended inflation from load index and speed code.
Flat-rate hours and job cost for 20 common repairs — oil service, brakes, timing belt, clutch and more.