Towball Weight Calculator

Guide only — not a substitute for a weigh-in

This worksheet applies a simple static-moments calculation and is a planning guide, not a certified result. Always confirm actual tow ball weight and total mass at a weighbridge before towing. Get in touch with our team to arrange one.

Signature Off Road Campers & Caravans

Tow Ball Weight Worksheet

Static moment calculation for your single or dual axle Signature Off Road van. Position loads along the A-frame and body to estimate tow ball download.
kg · metres

ConfigurationRequired Setup

These describe the actual van and its ratings — everything a compliance plate or weight certificate would tell you. Get these right first; the panels below let you experiment on top of them.
Before you start: You'll need to obtain the Couple to Axle Centre Distance, Overall Length and Tare Tow Ball Mass for your specific Caravan. Your Tare Mass will be on the Compliance Plate, but should be treated as a Guide Only as fitted accessories and options will vary the weight.
Both figures are usually on the compliance plate or weight certificate — no need to know the centre-of-gravity position. Tare axle load and CoG are worked out from these automatically.

Added ItemsYour Load

RatingsOptional

Enter these to check the loaded setup against your specific limits, both found on compliance plates / owner's manuals.

Side View

Results

Tow Ball Weight
— kg
—% of loaded mass
Axle Load
— kg
—% of loaded mass
Total Loaded Mass
— kg
tare + items
Tow ball weight as % of loaded mass — commonly recommended range 7–15%
0%10%20%30%
This worksheet applies a simple static-moments calculation and assumes each item's weight acts at a single point. It's a planning guide, not a substitute for a weighbridge check — always confirm actual tow ball weight and total mass at a certified weighbridge before towing, and check your specific vehicle and caravan compliance plates for exact ratings.

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