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Vehicle Towing & Payload Capacity Calculator

Calculate GVM, GCM, towball mass & legal towing compliance.

Input Parameters

Calculation Results

Legal Towing Compliance Status
LEGAL & WITHIN LIMITS
Actual Combined Weight (GCM)
4950 kg / 6000 kg max
Actual Vehicle Mass (GVM)
2700 kg / 3000 kg max
Estimated Towball Download
250 kg (10%)
Remaining Car Payload Reserve
300 kg
Summary: Your setup weighs 4950 kg combined, well under your vehicle's 6000 kg GCM limit.

Formula & How Vehicle Towing & Payload Capacity Calculator Works

Mathematical Formula
Compliance check against GVM, GCM, and Braked Tow Rating limits

Ensures total combined rig mass remains legally compliant under Australian transport standards.

How to Calculate Vehicle Towing & Payload Capacity Calculator (Step-by-Step)
  1. Enter Gross Vehicle Mass - GVM (kg): Input your target parameter value.
  2. Enter Kerb / Tare Weight (kg): Input your target parameter value.
  3. Enter Gross Combination Mass - GCM (kg): Input your target parameter value.
  4. Enter Max Towing Capacity (kg): Input your target parameter value.
  5. Enter Passengers + Car Cargo (kg): Input your target parameter value.
  6. Enter Loaded Trailer Weight (kg): Input your target parameter value.
  7. Apply Formula: Calculate using Compliance check against GVM, GCM, and Braked Tow Rating limits.
  8. Review Results: View exact computed answers, metrics, and worked mathematical proofs.
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Frequently Asked Questions (FAQs)

What is GCM in towing?

GCM (Gross Combination Mass) is the maximum legal total weight of car, occupants, cargo, and trailer combined.

Official Regulatory & Government Data Sources

Authoritative Standards & Verified Reference Citations

Independent & Verified

Calculations and mathematical logic on this page are grounded in published statutory rules, regulatory standards, and official government data published by the following bodies:

FuelWatch Western AustraliaGovernment
Government of Western Australia (DEMIRS)

Statutory fuel price monitoring and 24-hour price transparency service for Western Australia.

www.fuelwatch.wa.gov.au
FuelCheck New South WalesGovernment
NSW Government (Department of Customer Service)

Real-time statutory fuel price matching across all service stations in New South Wales.

www.fuelcheck.nsw.gov.au
Green Vehicle Guide (GVG)Government
Australian Department of Infrastructure, Transport & Regional Development

Official Australian fuel consumption ratings (L/100km) and tailpipe CO₂ emissions data.

www.greenvehicleguide.gov.au

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