Towing Capacity Calculator — Payload, GVWR & GCWR Check

How to use

1. Find GVWR and curb weight on the door-jamb sticker or in the owner's manual.
2. Weigh or estimate passengers, cargo and anything in the bed.
3. Enter tongue-weight percent, GCWR and the manufacturer rating if you have them.
4. Read which limit binds, then pass or fail your loaded trailer weight.

General information only — not medical, financial or legal advice. Figures cross-checked against public official sources (IRS / HMRC / NHS / WHO guidance); content last reviewed September 2026. For decisions that matter, confirm with a licensed professional in your country.

About this tool

Towing mistakes are expensive, and they are usually made before the hitch is even attached — someone reads a brochure number and ignores payload. This calculator checks the chain the way a weigh scale does: tongue weight (your trailer × 10–15%) must fit inside what your GVWR has left after curb weight and everything you load in the cab and bed, and the whole combination must fit under GCWR. Enter the door-sticker numbers, your passengers and cargo, and optionally the loaded trailer weight, and you get the maximum trailer weight by payload, by GCWR and by the manufacturer's rating — plus which constraint binds first and a clear pass or fail on your actual setup. The disclaimer is big on purpose: ratings vary by trim, axle ratio, engine and brake configuration, so verify every number with the manufacturer before you tow. This page is an estimate, not a legal rating.

FAQ

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