Towing Calculator
Advanced towing safety, cost & legal-compliance check. Verifies payload, GVWR, GCWR, tongue weight, sway risk and stopping distance with country-specific cost rates for 50+ countries.
Towing safety calculator
Towing Configuration
Towing Analysis
Awaiting your setup
Fill in your vehicle and trailer details, then tap Calculate Towing for a full safety + cost verdict.
Safety checks
Weight breakdown
Recommendations
How to fix this
Legal requirements — United States
Why this calculator is different
Most calculators only compare trailer weight to tow rating. We check all eight real-world limits payload, GVWR, GCWR, tongue weight, sway risk, brake performance, engine load, and license requirements then give you actionable fixes when a limit fails.
Payload (GVWR)
Everything you add people, cargo, tongue weight. The yellow door sticker is the source.
Tow rating
The marketing number. Loaded trailer must stay below it.
Tongue weight %
10–15% bumper-pull. 20–25% gooseneck. Below: sway. Above: rear-axle overload.
GCWR
Vehicle + trailer + everything combined. What the powertrain is rated for.
How to use it
Pull your owner's manual or open the driver's door for the yellow sticker. Four numbers from the vehicle, two from the trailer, then add people and cargo.
Vehicle
Enter curb weight, max tow rating, and payload. Yellow door sticker has payload.
Trailer
Pick trailer type, enter loaded weight (not dry). Tongue weight auto-fills.
People & cargo
Passengers and in-cab cargo count against payload — don't skip these.
Check & fix
Get the verdict, see which limit fails, follow the suggested fixes.
Frequently asked questions
What's the difference between GVWR, GCWR, and payload?
GVWR is the max your loaded vehicle can weigh. GCWR is the max combined weight of vehicle + trailer. Payload is GVWR minus curb weight everything you add counts against it.
Of the three, payload is the one drivers break most often without realizing it.
Why is payload more important than tow rating?
A modern half-ton commonly advertises 10,000–13,000 lb tow rating but only has 1,500–1,800 lb of payload. Tongue weight (10–15% of trailer) plus two passengers plus a cooler will exceed payload long before you hit the tow rating.
What is a safe tongue weight?
10–15% of loaded trailer weight for a conventional bumper-pull. 20–25% for gooseneck or fifth-wheel. Below the range causes sway. Above the range overloads the rear axle.
Do I need a weight distribution hitch?
Most manufacturers require a WDH for trailers over 5,000 lb or whenever tongue weight exceeds ~500 lb. A WDH redistributes tongue weight across axles, restores steering feel, and reduces sway.
How accurate are the country cost rates?
Each country has a default commercial-tow base rate sourced from regional towing-service averages, then adjusted for combined weight, road condition, terrain, grade, fuel type, and wind. Treat the number as an informed estimate actual quotes vary by service and time of day.
What happens if I exceed payload by 10%?
Even small overloads accelerate wear on suspension, brakes, and transmission, and can void warranty and insurance coverage in an at-fault collision. Most of the easy margin is in tongue weight drop passengers or cargo first.
How do I read my door sticker?
Open the driver's door. The yellow placard lists tire pressure, GVWR, GAWR, and a line that reads "The combined weight of occupants and cargo should never exceed X." That last number is your real payload and the one to enter.