How much retaining wall for a 40 ft long × 4 ft high?
A 40 ft long × 4 ft high retaining wall project is pre-filled below. Adjust any value to match your exact job.
Your project
Standard size shown by default. Change any value — the answer recomputes instantly.
You need
336blocks
Exact need: 320 blocks · plus 5% waste allowance
Material cost
$840–$2,688
Installed (US avg)
$4,240–$7,288
Shopping list
| ITEM | QTY | PRICE RANGE |
|---|---|---|
| blocks | 336 | $840–$2,688 |
| Estimated material total | $840–$2,688 |
Companion materials
- Gravel base (6 in): ≈ 1.06 tons