Calculators & Converters•Free Online Tool
Retaining Wall Block Calculator
Plan garden and structural retaining walls with precision. Calculates total blocks, courses/rows, buried foundation row below grade, and backfill gravel tonnage required for behind-wall hydrostatic drainage.
100% Free & Private
Unit System:
Retaining Wall Dimensions
Total Wall Blocks Needed
194 Blocks (8 Rows Total)
Blocks Per Row
23 Blocks / Row
Total Block Cost
$825
Installation & Backfill Specs
Backfill Drainage Gravel (12" deep):4.4 yd³ (~6.2 Tons)
Exposed Wall Face Area:105 sq ft
Buried Base Course:Included (Row 1 buried)
How to Use Retaining Wall Block Calculator
1
Enter Wall Dimensions
Specify wall length and exposed height in feet or meters.
2
Pick Block Size
Select 16x6, 12x4, or custom block face dimensions.
3
Review Quantities
Inspect total blocks needed, courses count, and backfill gravel volume in tons.
Frequently Asked Questions
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