Calculated result
3.5yd³
Ready-mix order
Formula
CONC-WALL-001Wall length × height × thickness ÷ 27 × (1 + waste)
160 ft²
Wall face area
2.96 yd³
Net wall volume
Concrete calculator
Concrete wall calculator
Concrete wall volume with stated thickness, waste, and ready-mix rounding.
By Feroz Sheikh · Formula CONC-WALL-001 v1.1.0 · Tested formula
Formula
CONC-WALL-001v1.1.0Project inputs
Enter your measurements. Switching units converts the same project, including coverage and unit rates. Package yields keep the unit printed beside each field.
Refine measurements and rates at any time. Your current values are included in the material-list PDF.
Planning estimate, not engineering advice. Confirm site measurements and product specifications. Calculation limits.
Bag table · waste in
Counts round up. A cubic yard is 45 of 80 lb, 60 of 60 lb, 72 of 50 lb, 90 of 40 lb.
| Bag | Count |
|---|---|
| 80 lb | 147 |
This calculator turns a straight wall's length, height and thickness into a transparent concrete volume with purchase rounding.
- Measure finished wall length and height.
- Enter the wall thickness specified for the project.
- Apply a waste allowance only after confirming openings, returns and geometry.
Add your project costs
Enter supplier prices and any labour, equipment or delivery costs. Pick a currency — badges, inputs, and totals follow.
Enter your supplier’s ready-mix concrete rate in the selected unit. Add delivery, pumping, short-load fees and placing labour as separate project costs. For GCC projects, select QAR, AED, SAR, KWD, OMR or BHD and enter local supplier rates.
How this calculator works
A transparent concrete wall takeoff.
Feroz SheikhWritten by Feroz Sheikh · founder
This calculator turns a straight wall's length, height and thickness into a transparent concrete volume with purchase rounding.
A wall takeoff is length × height × thickness, then waste. Openings are not auto-deducted — a door in a 6 in wall is a decision on the estimate, not a hidden hole in the yards. Formula ID stays on the sheet.
Worked example. Example: a 20 ft long wall, 8 ft high and 6 in thick has about 2.96 yd³ of net volume. With a 10% allowance, the quantity rounds to 3.5 yd³ in quarter-yard purchase increments.
See the example inputs and calculated result
This separate example uses the calculator's starting values in imperial units. It stays unchanged when you edit the tool above. Example rates, yields and dimensions are assumptions, not recommendations for your project.
| Input | Example value |
|---|---|
| Wall length | 20 ft |
| Wall height | 8 ft |
| Wall thickness | 6 in |
| Waste factor | 10 % |
Example result: Ready-mix order — 3.5 yd³.
Wall length × height × thickness ÷ 27 × (1 + waste)
Use the labelled units above when reproducing this example. To work in metric, switch the calculator to Metric; applicable measurements are converted, while product-specific units remain labelled.
- 1. Measure finished wall length and height.
- 2. Enter the wall thickness specified for the project.
- 3. Apply a waste allowance only after confirming openings, returns and geometry.
Field notes that change the number
- Use finished wall length, not formwork stick-out.
- Deduct large openings on a second line if they are real. Small block-outs often waste more than they save.
- Retaining walls are a different problem: drainage, geogrid and heel volume are not in this prism.
Common mistakes
- Calling this a retaining-wall design.
- Averaging a tapered stem into one thickness.
- Hiding waterstop and keys inside the concrete yards.
Need the broader workflow? Read the concrete planning guide.
Questions
Questions about concrete wall
Are openings deducted?
No. This quick takeoff uses gross wall geometry; adjust for significant openings in the final estimate.
Does this design a retaining wall?
No. Engineering, drainage, reinforcement and local-code requirements require independent review.
What is the formula ID?
This concrete wall calculator publishes formula CONC-WALL-001, version 1.1.0. The ID stays on the result and on the estimate line.