Planning a retaining wall just got easier with the Sunset Sleepers Retaining Wall Calculator. Simply choose the style of concrete sleepers you want and enter your wall’s height and length, and our tool will automatically estimate how many concrete sleepers and steel posts you'll need—no guesswork, no stress.
Calculator Usage Tips
Single Height Walls:
Each section you enter represents one wall. If your project includes turns (like L-shapes or U-shapes), treat each section as a separate wall. The calculator will automatically include two C-posts per turn.
Varying Wall Heights:
No problem—just break it down into separate wall sections by height. For example:
- Wall 1: 400mm high — use an 800mm C-post
- Wall 2: 600mm high — use a 1200mm C-post
Want to connect the two walls in a straight line instead? You can swap the two C-posts for one 1200mm H-post.
Custom Sizes:
Our calculator works with various wall heights and sleeper sizes. But for added peace of mind, we recommend confirming the estimate with a qualified landscaper or engineer—or feel free to speak with our team.