To find the weight of a *specific* F-150, you'll need to check the vehicle's specifications. This information is often found:
* On the vehicle's sticker: Look for a sticker on the driver's side doorjamb or the glove compartment. This will list the vehicle's GVWR (Gross Vehicle Weight Rating), which is the maximum weight of the vehicle when fully loaded. The curb weight (weight of the vehicle without passengers or cargo) is sometimes also listed, but not always.
* In the owner's manual: The owner's manual will often specify the curb weight.
* On Ford's website: You can usually find specifications for different F-150 models and years on the official Ford website. You'll need to select the specific year, trim level, and options.
Without knowing the specific F-150 you're interested in, I cannot give you a precise weight.