Built for a fast architecture workflow
- Rise / level difference input in mm
- Slope percentage input
- Required horizontal ramp run
- Equivalent 1:n slope ratio
- Slope angle in degrees
Ramp Calculator: Run, Ratio & Angle
Calculate the horizontal run required for a ramp from a level difference and target slope percentage. The tool also converts the same slope into a 1:n ratio and angle in degrees.
How to use it in practice
A 600 mm rise at 8.33% slope needs approximately 7.20 m of horizontal run. The same slope is about 1:12 and roughly 4.76°.
How to use Ramp Calculator: Run, Ratio & Angle
- 1
Enter the vertical rise or level difference in millimetres.
- 2
Enter the intended slope as a percentage.
- 3
Calculate to get the required horizontal run.
- 4
Use the displayed ratio and angle as cross-checks during early layout work.
Common questions
Does this include landings?
No. The calculated run is the geometric ramp run from the entered rise and slope. Required landings, clear widths and code provisions must be checked separately.
What does 1:12 mean?
A 1:12 slope means one unit of vertical rise for every 12 units of horizontal run.
Can I use the result for accessibility compliance?
Use it as a calculation aid only. Accessibility limits and landing requirements depend on the applicable code and project conditions.
Related architecture tools
ARCHITEAM WORKSPACE
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