Caravan Payload Calculator
Check how much payload is left in your caravan against its ATM.
Result
432 kg payload remaining
- Payload capacity (ATM − Tare)
- 850 kg
- Water (1 litre = 1 kg)
- 150 kg
- Total loaded
- 418 kg
- Remaining
- 432 kg
Payload capacity is your ATM minus tare weight. Weigh your loaded van at a public weighbridge to confirm.
Assumptions and notes
- Water is counted at 1 kg per litre.
- ATM and Tare must be taken from your caravan compliance plate — figures vary by build and options.
- Accessories fitted after manufacture (solar, batteries, bull bar, awning) reduce your payload.
- Results are estimates only and are not financial, tax or legal advice.
Information last checked: August 2026.
Frequently asked questions
What is ATM?
Aggregate Trailer Mass is the maximum total weight of the caravan when fully loaded and not coupled to a tow vehicle, as stated on the compliance plate.
Is payload the same as GTM?
No. GTM is the weight carried by the caravan's axles when coupled. Payload is the difference between ATM and tare weight.