Is this calculation free and private?

Yes, 100% of calculations execute locally in your web browser. No inputs or personal data are stored or transmitted.

What does the Towing Capacity & Truck Payload Margin Calculator give me?

It works out Trailer Tongue Weight on Hitch, Remaining Truck Payload Margin, Truck Total Weight with Tongue and Is Truck Safe & Legal?, updating live as you change the inputs.

What do I need to enter?

Just Truck GVWR, Truck Empty Curb Weight, Passengers + In-Bed Cargo Weight, Fully Loaded Trailer Weight and Target Tongue Weight. Every field has a sensible default you can start from.

Is my data uploaded anywhere?

No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.

Does it work on a phone?

Yes. The layout adapts to small screens and needs no app or signup.

Towing Capacity & Truck Payload Margin Calculator

Calculate trailer tongue weight (10-15%), Gross Combined Weight Rating (GCWR), and remaining truck payload capacity for safe towing.

100% free
Private in browser
No signup
No watermarks

Truck GVWR (Gross Vehicle Weight Rating in lbs)

Truck Empty Curb Weight (lbs)

Passengers + In-Bed Cargo Weight (lbs)

Fully Loaded Trailer Weight (lbs)

Target Tongue Weight (10% to 15% recommended)

Trailer Tongue Weight on Hitch (lbs)

720

Remaining Truck Payload Margin (lbs)

730

Truck Total Weight with Tongue (lbs)

6,370

Is Truck Safe & Legal? (1=Safe, 0=Overloaded)

Rate this tool

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About Towing Capacity & Truck Payload Margin Calculator

Calculate trailer tongue weight (10-15%), Gross Combined Weight Rating (GCWR), and remaining truck payload capacity for safe towing. Enter Truck GVWR, Truck Empty Curb Weight and Passengers + In-Bed Cargo Weight and the tool works out Trailer Tongue Weight on Hitch, Remaining Truck Payload Margin and Truck Total Weight with Tongue straight away. Everything runs in your browser, so your data never leaves your device.

How to use Towing Capacity & Truck Payload Margin Calculator

Enter Truck GVWR, Truck Empty Curb Weight and Passengers + In-Bed Cargo Weight.
Adjust the remaining options (Fully Loaded Trailer Weight and Target Tongue Weight) to match your case.
Read Trailer Tongue Weight on Hitch, Remaining Truck Payload Margin and Truck Total Weight with Tongue in the results panel — copy or download what you need.

Key features

Shows Trailer Tongue Weight on Hitch (lbs)
Shows Remaining Truck Payload Margin (lbs)
Shows Truck Total Weight with Tongue (lbs)
5 adjustable inputs, results update as you type
No signup, no limits

Frequently asked questions

Is this calculation free and private?: Yes, 100% of calculations execute locally in your web browser. No inputs or personal data are stored or transmitted.
What does the Towing Capacity & Truck Payload Margin Calculator give me?: It works out Trailer Tongue Weight on Hitch, Remaining Truck Payload Margin, Truck Total Weight with Tongue and Is Truck Safe & Legal?, updating live as you change the inputs.
What do I need to enter?: Just Truck GVWR, Truck Empty Curb Weight, Passengers + In-Bed Cargo Weight, Fully Loaded Trailer Weight and Target Tongue Weight. Every field has a sensible default you can start from.
Is my data uploaded anywhere?: No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.
Does it work on a phone?: Yes. The layout adapts to small screens and needs no app or signup.

Related In-Depth Guides

Learn practical workflows, real-world examples, and expert tips in our comprehensive guides:

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The Complete Truck Towing Guide: GVWR, Tongue Weight & Payload Capacity Math

Learn the real mathematics of safe towing. Why truck payload limit is reached long before maximum tow rating, and how to balance trailer tongue weight.