Trailer Tongue Weight Calculator

Inputs

View results
Trailer weight before the entered cargo. Include installed accessories already on the trailer.
lb
Measured vertical hitch load before the entered cargo.
lb
Distance from hitch ball/coupler to the center of the trailer axle group.
ft
Weight of the first cargo group.
lb
Distance from hitch ball/coupler to the center of gravity of cargo group A.
ft
Weight of the second cargo group.
lb
Distance from hitch ball/coupler to the center of gravity of cargo group B.
ft
Weight of the third cargo group. Use zero if unused.
lb
Distance from hitch ball/coupler to the center of gravity of cargo group C.
ft
Lower bound of the target tongue-weight percentage range.
%
Upper bound of the target tongue-weight percentage range.
%

Results

Default result
Edit inputs
Tongue weight(T)
683.3lb
Out of tol.

above entered target range

Also computed

Tongue weight percent(T_pct)Out of tol.18.98%

above entered target range

Gross trailer weight(W_total)3,600lb

Axle group load(R_axle)Pass2,917lb

Trailer CG from hitch(x_CG)9.722ft

Cargo tongue change(dT_cargo)433.3lb

positive adds hitch load; negative unloads the hitch

Target tongue min(T_min)360lb

Trailer tongue weight preview: 683 pounds tongue, 19.0 percent, above entered target rangeTrailer load-position previewStatic support reactions from hitch to axle-group center. Green band is the entered target tongue range.hitchaxle groupCG683 lb tongue, 19.0 percentAxle group load 2,917 lb. move combined CG rearward to hit the target midpoint.
Method notes 3 notes
  • Cargo tongue contribution uses static moments: dT = W x (1 - x/L), where x is cargo CG distance from the hitch and L is hitch-to-axle distance.
  • Gross trailer CG from the hitch is xCG = L x (1 - tongue weight / gross trailer weight).
  • Use measured scale weights, tire ratings, axle ratings, coupler and hitch ratings, weight-distribution setup guidance and manufacturer limits for real towing decisions.

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