Trailer Loading Ramp Angle Calculator

Method and units

Ramp length = √(rise² + run²). Angle = arctan(rise ÷ run), converted to degrees. Percent grade = rise ÷ run × 100.

Worked example

A 0.6 m rise over 2.4 m horizontal run gives a 2.474 m ramp, angle about 14.0° and 25% grade.

Supported inputs and interpretation

Rise 0–10 m; horizontal run 0.01–50 m. Results are rounded for display only; internal calculations retain full JavaScript precision. Entered measurements and assumptions determine the answer.

References and limitations

The equations here use the stated unit conversions and geometric or accounting relationships; no empirical vehicle limits or manufacturer presets are supplied.

This is geometry only. It does not evaluate ramp strength, surface, traction, load, vehicle clearance or trailer stability. Confirm equipment ratings and manufacturer/professional guidance; an angle estimate is not loading approval or evidence of safe use.

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This planner performs the stated arithmetic; it is not a vehicle inspection, engineering approval, manufacturer's recommendation or professional review.