Winch sizing has one rule that covers most cases and two details that decide whether the rule works in practice. Get all three right and the winch you buy will still be the correct one in five years.
What Size Winch Do I Need?
Take the fully loaded weight of the vehicle and multiply it by 1.5. That figure is the minimum rated line pull. A truck at 7,000 lb loaded therefore wants at least 10,500 lb of winch, which in practice means a 12,000 lb unit rather than a 10,000 lb one.
Use Loaded Weight, Not Curb Weight
The number on the door sticker is not what you are recovering. Add the fuel, the tool boxes, the crew and whatever is in the bed. On a work truck that is easily 1,500 lb over curb weight, and it is exactly the load that is present when the truck gets stuck.
- Half-ton pickup, lightly loaded: 9,000 lb to 10,000 lb.
- Three-quarter ton work truck: 12,000 lb.
- One-ton or heavily loaded truck: 15,000 lb to 16,500 lb.
- Full-size UTV: 4,500 lb, and 2,500 lb to 3,500 lb for most ATVs.
Rated Pull Only Applies to the First Layer
This is the detail that catches people. A winch produces its rated pull with a single layer of rope on the drum. Each additional layer increases the effective drum diameter and reduces pulling force, and by the outer layer you can be down by a third or more.
Two things follow from that. Sizing up gives you margin exactly where you lose it, and spooling out more rope before a pull leaves you working on a lower layer where the winch is strongest.
Conditions Matter as Much as Weight
The 1.5x figure assumes a reasonable pull. Deep mud, a steep bank or a vehicle buried to the axles can multiply the resistance well past the vehicle's own weight, because you are no longer just moving it, you are also breaking suction and lifting.
Plowing is its own case. Pushing snow is a series of short heavy cycles with little cooling between them, so size up rather than matching the rule exactly.
Recovering other people is the case worth planning for. If the winch exists so you can pull out a machine, a trailer or a colleague's truck rather than your own, size it against the heaviest thing you expect to be asked to move, not against the truck it is bolted to.
Matching It to the Truck
Once the rating is settled, check that the winch physically fits the bumper opening and that the mount is rated for it. Full-size ranges run from around 9,000 lb through 12,000 lb and 15,000 lb up to 16,500 lb, so there is usually a unit at the size you need in more than one body style. Browse truck and SUV winches, ATV and UTV winches or the whole winch range.