Freight Seesaw
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The axle weights of a loaded rig depend on two things: (1) empty axle weights, (2) center of gravity (CG) of payload. To help balance axle weights before loading, Freight Seesaw estimates (2) based on pallet pattern and individual pallet weights.

app screenshot
  • Works for any truckload on same-sized pallets.
  • Patterns can be entered in seconds.
  • Based on time-tested physical principles.
  • Helps avoid reloads.
  • Free lite version available.

Freight Seesaw displays CG in this box:

balance point
Exact pallet dimensions must be entered to get accurate results (“garbage in, garbage out”). If you are unsure about the exact pallet size to the inch, measure one pallet with a tape measure.

When freight overhang prevents the pallets from touching, enter the freight dimension instead of the pallet dimension.

Freight Seesaw assumes freight is centered on each pallet (this is almost always true).

Freight Seesaw does not measure gross weight or replace scaling. It helps balance axle weights when gross weight is legal.

It only takes a few trials to determine which CGs work best for your equipment. (Tip: start with loads that have identical freight on every pallet.) Anytime you haul a heavy load, enter the pallet pattern into Freight Seesaw to calculate its CG. If the drive and trailer axles scale about the same, this is a good number for your rig. If the drive axles scale a lot heavier, it is too low. If the trailer axles scale a lot heavier, it is too high.

Freight Seesaw displays CG in the same units as pallet size. Users outside of North America should use 2 cm instead of 1 inch as the base unit.

For those familiar with physics, a good technical discussion can be found here.

DISCLAIMER. Freight Seesaw is offered as is without any warranties, explicit or implied. The developer will not be held responsible for any damages or failures of any kind associated with its use, including but not limited to: reloads, overweight citations (of any kind), hardware malfunctions, inaccurate data entry, or failure to understand what the app does.

The calculation Freight Seesaw performs is based on time‑tested physical principles discovered by Sir Isaac Newton hundreds of years ago. When used properly it can help avoid returning to the dock for load adjustments (including complete reloads) after scaling.