ConcreteCalculatorHQ

Concrete Wall Calculator

Calculate the volume and weight of concrete needed for walls, including retaining walls and foundation walls. Enter the length, height, and thickness to get results in cubic yards, bags, and ready-mix truckloads. Purchasing slightly more concrete than the estimate reduces the probability of having insufficient material.

Wall
Units
Concrete Volume2.17 yd³
Bags
98 × 80 lb
Weight
8,800 lb
Loads
1

How to use this calculator

  1. 1. Enter dimensions
    Fill in the required fields for this concrete form.
  2. 2. Click Calculate
    Review volume, bag counts, weight, and ready-mix loads.
  3. 3. Adjust if needed
    Open advanced options for waste, density, prices, and truck capacity.

Common examples

20 ft wall @ 4 ft × 8 in
Typical small retaining wall volume estimate.
40 ft wall @ 8 ft × 10 in
Larger wall; confirm reinforcement and formwork.

Estimating notes

  • Measure height from finished grade to the top of the pour and use the maximum height.
  • Add waste for overbreak and form changes (5–10% is common).
  • Confirm thickness and reinforcement requirements for your wall type and soil loads.
  • Bag yields and density vary by product; verify values on your bag or supplier spec sheet.
  • Cost estimates exclude delivery fees, taxes, and minimum loads.