Metric Republic / Roof & Site Geometry / Ramp Slope Calculator

Ramp Slope Calculator

Convert rise and horizontal run into slope percentage, angle and 1:n ratio.

How it works

Convert rise and horizontal run into slope percentage, angle and 1:n ratio.

Core method:
Slope % = rise/run × 100. Ratio n = run/rise. Angle = atan(rise/run).

Before you use the result: Check project drawings, supplier data and site conditions before ordering materials.

Practical use

Enter dimensions from the latest drawings or verified site measurements. Adjust allowances and material properties to the supplier or specification you are actually using. Results update instantly as inputs change.

Keep units consistent with the source information.
Use project-specific densities, pack sizes and coverage rates where provided.
Round purchasing quantities to supplier packaging and delivery rules.

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