Free Industrial Maintenance Calculators

Free Industrial Maintenance Calculators
for Industrial Maintenance Technicians

Standards-compliant calculators for maintenance technicians in NZ & Australia. Free, no signup required. Works on mobile.

Trade

Country

🇳🇿 New Zealand🇦🇺 Australia

Typical Electrician rate: NZD $85–$130/hr excl. GST (15%)

Desired annual take-home (NZD)

Income tax rate (%)

Check IRD for your bracket.

Billable weeks per year

Billable hours per week

Target profit margin (%)

10–20% is typical for a sole trader.

Total annual overhead

Industrial Maintenance Calculators

Dedicated calculators for maintenance technicians. Bookmark the ones you use most.

Driven shaft RPM, speed ratio, belt velocity and belt length from pulley diameters.

ISO 281 fatigue life in million revolutions and hours from C, P load ratings and shaft speed.