Generator Calculators & Tools
Free engineering tools for sizing and costing diesel generators in Southern Africa. Work out the kVA you need from a load list, estimate diesel litres and rand per hour or year, compare the five-year total cost of two sets, and convert between kVA and kW at any power factor. Each calculator is a planning aid — AGP confirms final figures on a site assessment.
Generator Sizing Calculator
What size generator do I need? Build a load list and get a recommended kVA band in about a minute.
Before you start: Know the running watts of your essential circuits and which loads have motor starting surges (fridges, pumps, HVAC).
Open toolFuel Consumption Calculator
How much diesel will my generator burn? Estimate litres and rand per hour, day, month and year.
Before you start: Have your generator kVA, expected average load percentage, daily run hours and your delivered diesel price per litre.
Open toolRunning Cost & TCO Calculator
Which generator costs less over five years? Compare purchase, fuel and service for two units and find the crossover.
Before you start: Bring purchase prices, annual run hours, load percentage, diesel price and service-plan cost for each set you are comparing.
Open toolkVA to kW Converter
How do kVA and kW relate on a generator? Convert either way with an editable power factor.
Before you start: Know the nameplate kVA (or your load kW) and your power factor — 0.8 is the usual diesel genset default.
Open tool