About this hitch drop & rise calculator
A level trailer starts with matching the loaded tow vehicle's hitch height to the trailer's coupler height when the trailer is level. This calculator estimates the drop or rise needed.
How the calculation works
- Measure from level ground to the receiver reference point.
- Level the trailer and measure its coupler height using the same measurement convention described by your hitch manufacturer.
- Optionally enter expected rear squat under load.
- The calculator reports approximate drop or rise and a rounded common-size target.
Get a better result
- Measure on level pavement.
- Load the tow vehicle as it will be used before final adjustment.
- Follow your ball mount and hitch manufacturer's exact measurement points and ratings.
Important: Tow Capacity Lab provides planning math, not a certification that a combination is safe, legal or manufacturer-approved. The lowest applicable rating always controls.
Frequently asked questions
What if the calculator shows a negative drop?
A negative drop means the ball needs to be raised relative to the receiver, so you need rise rather than drop.
Should I account for truck squat?
Yes, if you know the loaded receiver height. The best final measurement is taken with realistic tow-vehicle load and appropriate weight-distribution setup where applicable.
