Slope and grade guides

Excel and Google Sheets formulas for slope percent, rise, run, and angle. Sample layouts, error checks, and when to link stakeholders to the browser calculator instead.

Rise over run for engineering and surveying: label horizontal vs vertical distance, compute slope percent and degrees, and verify results with our free browser tool.

Convert roof pitch to slope percentage and angle for contractors, inspectors, and DIY plans. Translate rise-in-12 into true rise over run and grade percent quickly.

Calculate road grade and hill incline as grade percentage from rise over horizontal run. Worked examples, sign rules, and station checks for civil and site crews.

Convert slope percentage to degrees and back with tan and arctan. See when plans use percent vs angle and how to keep spreadsheets, GIS, and field notes aligned.

Five worked slope percentage examples with rise, run, percent, and angle for roads, roofs, ramps, trails, and site grading. Reuse the same layout on your projects.

Guide to rise, run, and angle inputs, live grade percent output, and angle mode that solves rise. Field checks for construction, grading, and surveying workflows.

Calculate slope percentage by hand or with a calculator: measure rise and run, divide, multiply by 100, and verify angle. Includes sign rules and common field mistakes.

The full slope percentage formula with positive and negative grade, degree conversion, and unit rules. Field-ready notes for construction, roads, and surveying math.

Learn what slope percentage means, how rise over run becomes grade percent, how it differs from angle, and where builders, road crews, and surveyors rely on it daily.