Your load against the published payload, GVM, GCM, tow & tow-ball ratings
Pick a vehicle and the calculator loads its real kerb weight, GVM, GCM, braked-tow rating and tow-ball limit. Add the weight of passengers and gear, tick any fitted accessories, and set a trailer weight, the five gauges update live:
Figures are manufacturer-published guidance, not independently verified. The optional rear-axle figure is a simplified estimate. Always confirm against the compliance plate and owner's manual before loading, and never exceed rated GVM, GCM, tow or tow-ball limits.
Payload 450 kg · GVM 2,050 · GCM 3,650 · Braked tow 1,600 · Tow-ball 160 kg
Passengers, accessories and the tow-ball all count against the vehicle's payload and GVM. The trailer adds to GCM.
Total weight of people and gear inside the vehicle
Fully-loaded trailer weight, not the dry tare
Assumed at 10% of trailer ATM
Enter both from a weighbridge / your compliance plate to add a rear-axle gauge. Nothing here is estimated.
Payload = GVM − kerb weight. Passengers, accessories and the tow-ball download all count against it.
GVM used = kerb + passengers + accessories + tow-ball.
GCM used = kerb + passengers + accessories + trailer (ATM). The tow-ball isn't added twice: it's part of the vehicle load and comes out of the trailer's axle weight, so (kerb + load + tow-ball) + (ATM − tow-ball) = kerb + load + ATM.
Tow = trailer ATM vs the braked rating. Tow-ball is assumed at 10% of the trailer (a common rule of thumb) unless you enter your own.
When a vehicle's kerb weight isn't published but its payload is, we derive kerb = GVM − payload. Manufacturers usually quote payload off the lightest build, so a car with options already fitted will have a little less real-world payload.
Vehicle weights (kerb, GVM, GCM, braked-tow and tow-ball limits) are the manufacturer's published figures from our database. Figures are a guide, not independently verified. Confirm against the compliance plate and never exceed rated GVM, GCM, tow or tow-ball limits.