TowReady
FREE AUSTRALIAN TOWING CALCULATOR

How does your rig add up?

Enter travel-ready weights and manufacturer ratings in kilograms. No account needed.

Your weights & ratings

All fields required except the two optional empty-mass fields. Enter 0 for measured ball load only if that is correct.

People, fuel, accessories and luggage included. Exclude trailer ball load.

Total trailer mass including ball load, measured unhitched.

Use an actual measurement; do not assume a percentage.

Maximum total trailer mass from its plate.

Lowest applicable vehicle, towbar and coupling tow rating; include manufacturer conditions.

Lowest applicable vehicle, towbar and coupling ball limit.

Maximum loaded vehicle mass.

Maximum combined mass specified by the manufacturer.

Use a compatible manufacturer figure to estimate vehicle payload.

Check what the stated tare includes before using it.

YOUR WEIGHT CHECK

A clearer picture starts here.

Enter your weights to see each check, remaining capacity and the calculation behind it.

Missing or invalid inputs never produce a passing result.

What this calculator checks

Compare loaded trailer mass with ATM and your effective towing limit. Check ball load, vehicle GVM and combined GCM. Add kerb and tare figures for optional payload estimates.

Vehicle while towing = vehicle before hitching + ball load.
Combined mass = vehicle before hitching + whole trailer mass.
Trailer axle-supported mass = whole trailer mass − ball load.

“Within limit” applies only to the entered ratings. GTM, individual axle loads, brakes, tyres, distribution and manufacturer restrictions are not checked. Verify actual weights and all applicable requirements before towing.

Where do I find my numbers?

Use vehicle manuals, compliance information and towbar/coupling ratings. Use a weighbridge for loaded masses and suitable equipment for the coupling load. Check conditional towing limits in your manual.

Read the weight guide · Read the calculation limitations