CalcRetaining Wall Calculator
Last updated: 2026-08-24
Retaining Wall Calculator — Retaining Wall Calculator. Free online calculator with formula, examples and step-by-step guide.
Inputs
Result
Enter values and press Calculate
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How to use it
- Calculate thickness average: (0.4m + 0.3m) ÷ 2 = 0.35m
- Calculate volume of the wall: 10m × 2m × 0.35m = 7m³
- Calculate cement: 7m³ × 7 = 49 bags
- Calculate steel: 7m³ × 90 kg/m³ = 630 kg
- Calculate formwork (doble cara): 10m × 2m × 2 = 40m²
Common mistakes
- ⚠️ Not inclinar The wall hacia The terreno (debería tener ligera inclination)
- ⚠️ Omitir drenajes and filtros detrás of the wall to evitar pressure hidrostática
- ⚠️ Use thickness of corona insuficiente que reduce The estabilidad
Worked example
Calculate concrete and steel for a retaining wall 10m long, 3m high with 0.30m base thickness.
The retaining wall requires {volumen} m³ of concrete, {cement_sacos} bags of cement, {sand_m3} m³ of sand, {gravel_m3} m³ of gravel and {acero_kg} kg of steel reinforcement.
Input guide
| Field | Typical range |
|---|---|
| espesor_base | Rule of thumb: base = height × 0.4 to 0.6 |
| altura | Typical: 0.5–4 m — walls over 1.5 m need engineering |
| espesor_corona | Minimum 0.20 m; typical 0.20–0.30 m |
| largo | Typical: 5–50 m for garden/landscape walls |