Free to use
Tools
No sign-in, no enquiry. Answer what you know and each tool hands you a number you can shop with — the rating to buy, the diesel it burns, the cable it needs, or the parts due at the next service.
Service kit builder
Pick the engine family and the interval that is due, and the whole parts list assembles itself — every interval below it included. Choose genuine or aftermarket per line and price the lot as one order.
Build my kitSpares & service schedule finder
Match your set to its engine family by brand, model, engine or kVA and see which filters, belts and consumables are due at each interval.
Find my sparesGenerator sizing calculator
List the machines that have to keep running, or enter your connected load, and it returns the kVA rating to shop for — with the starting headroom a motor needs already allowed for.
Work out my sizeRunning cost calculator
The set is the smaller bill. Work out the diesel: litres an hour at your real load, and what that comes to over a day and a month at today's pump price.
Work out the costkVA to kW converter
Your appliances are rated in kW, generators are sold in kVA, and the difference is the power factor. Convert either way and get the rating to shop for.
ConvertCable size calculator
Size the run between the set and the panel. Current is the easy half; over a long run the voltage drop decides it, so both are checked and the bigger answer wins.
Size the cableRather read it
The generator buying guide
What kVA and kW mean, prime versus standby, whether a silent canopy is worth it, and how new, used and built-to-order sets compare — all in plain words.
Read the guide