AARCHITEAM TOOLS
CONVERSION TOOL

Slope Converter: % · Degrees · 1:n Ratio

Express the same slope three different ways. Enter rise and run to calculate percentage gradient, angle and a 1:n ratio.

Built for a fast architecture workflow

  • Rise and run inputs
  • Slope percentage
  • Angle in degrees
  • Equivalent 1:n ratio
  • Useful for ramps, roofs, drainage and site gradients

How to use it in practice

A rise of 1 over a run of 12 equals approximately 8.33%, 4.76° and 1:12.

How to use Slope Converter: % · Degrees · 1:n Ratio

  1. 1

    Enter the vertical rise.

  2. 2

    Enter the horizontal run using the same unit.

  3. 3

    Calculate to get percentage, angle and ratio.

  4. 4

    Use the format that matches your drawing, specification or coordination discussion.

Common questions

Do rise and run need to be in metres?

No. They can be in any consistent unit because the slope depends on their ratio.

What does 8.33% mean?

It means the rise is about 8.33 units for every 100 horizontal units.

Can I use this for roof pitch?

Yes for the geometric slope relationship, while the dedicated roof calculator also provides rafter length and approximate roof area.

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