Building tool
Retaining Wall Block Calculator
Calculate wall blocks, cap blocks, base gravel, drainage stone, and geogrid rows.
Runs in your browserResult
- Wall face
- 120 sq ft
- Courses
- 6
- Wall blocks
- 195
- Cap blocks
- 30
- Drainage stone
- 4.44 yd³
Wall engineering, embedment, base thickness, drainage, surcharge, geogrid, frost, and permit requirements depend on the site and block system.
How to use this retaining wall block calculator
- Measure the project, enter the dimensions in the units shown, and add the waste, spacing, coverage, or material settings that apply.
- Review the calculated totals, units, and assumptions. Check the inputs and units before relying on the result.
- Change one input at a time to compare another case, then copy or save the result you plan to use.
About this retaining wall block calculator
Retaining Wall Block Calculator helps you calculate wall blocks, cap blocks, base gravel, drainage stone, and geogrid rows. The input and result appear together for easy comparison.
You can also use it to compare results after changing one input.
Example
Enter wall length, height, block face size, base depth, and drainage zone to estimate blocks, caps, gravel, and geogrid.
Common uses
- → calculate wall blocks, cap blocks, base gravel, drainage stone, and geogrid rows
- → compare results after changing one input
- → save an estimate for planning or comparison