DIY
Retaining Wall Calculator
Calculate retaining wall blocks and materials by length and height. Free retaining wall calculator.
In this article
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Blocks/row = length/block width। Rows = height/block height। +10%। 1m+ height: structural engineer MANDATORY। Drainage: weep holes + gravel backfill essential (Indian monsoon!)।
India
Gabion walls: cost-effective for hilly areas। Stone masonry: traditional, available everywhere।
⚡ CalcWolf Insight
Allan Block, Versa-Lok, and Pavestone are the three most common retaining wall block brands. They are NOT interchangeable — each has a proprietary interlocking system. Choose one brand and stick with it for the entire wall. Mixing brands causes misalignment that worsens over time.
Frequently asked questions
Engineer needed?▾
1m+ height: absolutely yes।
Drainage?▾
Without = collapse in monsoon guaranteed। Weep holes every 1.5-2m।
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