Calculate the number of blocks and capstones needed for a retaining wall.
Wall Dimensions
Block Dimensions
Material List
Building a Wall?
Enter dimensions to find the exact block count.
About this calculator
Overview
This calculator estimates the materials for a segmental retaining wall. It determines the number of standard blocks for the main body and capstones for the top row based on your project dimensions.
💡
Pro Tips
Burry the first course of blocks (about 1 inch of depth for every 8 inches of wall height) for stability.
Capstones are typically wider and flatter than standard wall blocks and are glued in place.
Always order 5-10% extra blocks to account for breaking and cutting.
!
Fun Facts
"Retaining walls taller than 3-4 feet usually require engineering and permits."
"Most retaining wall blocks have a lip on the bottom back edge to lock them into the course below."
"Proper drainage behind the wall (gravel and drain pipe) is essential to prevent failure from hydrostatic pressure."
