Retaining Wall Calculator
Calculate materials for a small retaining wall including blocks and drainage backfill.
Retaining wall for a 2m by 2.1m wall
For a retaining wall measuring 2 metres by 2.1 metres, this estimate includes blocks and backfill using the default wall thickness below.
- Wall area4.20 m²
- Blocks needed42
- Mortar volume0.08 m³
- Drainage backfill1.44 tonnes
Results - Retaining Wall Calculator
- Wall area4.20 m²
- Blocks needed42
- Mortar volume0.08 m³
- Drainage backfill1.44 tonnes
How this retaining wall calculator works
It estimates wall units and mortar from face area, then adds a practical drainage gravel backfill volume for a small retaining wall build.
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