Calculator

Ramp grade calculator

Ramp grade (percent slope): grade_percent = (rise / run) x 100. Enter your numbers below; the formula and its source are shown under the result.

Updated

The formula

grade_percent = (rise / run) x 100

USGS example: 1,000 / 2,000 = 0.5; 0.5 x 100 = 50%.

Estimate only. The capacity on the truck's data plate is the legal limit; never exceed it.

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Sources

  1. USGS - To Determine Percent of Slope and Angle of Slope (retrieved November 3, 2026)