Retaining Wall Calculator
Calculate materials for a small retaining wall including blocks and drainage backfill.
Retaining wall for a 3m by 0.9m wall
For a retaining wall measuring 3 metres by 0.9 metres, this estimate includes blocks and backfill using the default wall thickness below.
- Wall area2.70 m²
- Blocks needed27
- Mortar volume0.05 m³
- Drainage backfill0.93 tonnes
Results - Retaining Wall Calculator
- Wall area2.70 m²
- Blocks needed27
- Mortar volume0.05 m³
- Drainage backfill0.93 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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