What is tongue weight?

The downward force the trailer coupler puts on the hitch ball. For a conventional trailer it should be 10–15% of the loaded trailer weight.

What happens if tongue weight is too low?

The trailer is more likely to sway at speed. Move cargo forward of the trailer axles to raise it.

Does tongue weight count against payload?

Yes. It is carried by the tow vehicle, so it is subtracted from payload along with passengers and cargo.

Tongue weight calculator

Target tongue weight is 10–15% of the loaded trailer weight. Enter the trailer weight for the range; add a measured value or a bathroom-scale lever reading to check it.

Enter a loaded trailer weight.

Frequently asked

What is tongue weight?: The downward force the trailer coupler puts on the hitch ball. For a conventional trailer it should be 10–15% of the loaded trailer weight.
What happens if tongue weight is too low?: The trailer is more likely to sway at speed. Move cargo forward of the trailer axles to raise it.
Does tongue weight count against payload?: Yes. It is carried by the tow vehicle, so it is subtracted from payload along with passengers and cargo.

Tongue weight in the glossary · Full towing calculator · Weight-distribution hitch guide