Enter Length (ft), Width (ft) and Thickness (in) and the remaining scenario settings to review cubic yards with waste with this tool. Volume combines three dimensions, so a depth-entry mistake can materially change the order.
Bag yields are approximate; verify the manufacturer’s stated yield.
Concrete volume = Length × Width × Depth
Order quantity = Volume × (1 + Waste allowance)The calculation links Length (ft), Width (ft) and Thickness (in) to cubic yards with waste. Volume combines three dimensions, so a depth-entry mistake can materially change the order. The allowance is added to calculated volume, not to each dimension.
Enter Length (ft), Width (ft) and Thickness (in) and the remaining scenario settings to review cubic yards with waste with this tool. Volume combines three dimensions, so a depth-entry mistake can materially change the order.
Estimate concrete volume for the slab or shape selected and add the entered allowance. Translate dimensions into an ordering quantity before checking product yield.
Volume combines three dimensions, so a depth-entry mistake can materially change the order. The allowance is added to calculated volume, not to each dimension.
Prepare Length (ft), Width (ft), Thickness (in) and Waste allowance (%). Convert depth to the requested unit and measure each section; apply waste after calculating the geometric volume.
Volume combines three dimensions, so a depth-entry mistake can materially change the order. The allowance is added to calculated volume, not to each dimension. Subgrade variation, over-excavation, reinforcement, delivery minimums and product yield can change the quantity purchased. The estimate is not a structural design.
Use the full settings in the worked-example table. They produce Cubic yards with waste: 2.72 yd³. Compare the method and units as well as the displayed number.
The displayed relationship is Concrete volume = Length × Width × Depth Order quantity = Volume × (1 + Waste allowance) Convert depth to the requested unit and measure each section; apply waste after calculating the geometric volume.
Subgrade variation, over-excavation, reinforcement, delivery minimums and product yield can change the quantity purchased. The estimate is not a structural design. Before ordering, compare the quantity with actual site measurements and the product coverage specification.
Worked concrete calculator example. Set Length (ft) = 20; Width (ft) = 10; Thickness (in) = 4; Waste allowance (%) = 10. The corresponding output is Cubic yards with waste: 2.72 yd³. Volume combines three dimensions, so a depth-entry mistake can materially change the order.
Estimate concrete volume for the slab or shape selected and add the entered allowance. Translate dimensions into an ordering quantity before checking product yield.
Convert depth to the requested unit and measure each section; apply waste after calculating the geometric volume.
| Field | Example value | Entry check |
|---|---|---|
| Length (ft) | 20 | Enter the value for this scenario using the field label as the reference. |
| Width (ft) | 10 | Enter the value for this scenario using the field label as the reference. |
| Thickness (in) | 4 | Enter the value for this scenario using the field label as the reference. |
| Waste allowance (%) | 10 | Enter a percentage in the form requested by the field, keeping its stated time basis. |
Relationship used for this example: Concrete volume = Length × Width × Depth Order quantity = Volume × (1 + Waste allowance)
Volume combines three dimensions, so a depth-entry mistake can materially change the order. The allowance is added to calculated volume, not to each dimension.
| Output | Displayed result |
|---|---|
| Cubic yards with waste | 2.72 yd³ |
With these settings, cubic yards with waste is 2.72 yd³. Use the same units and calculation mode when reproducing this example.
Volume combines three dimensions, so a depth-entry mistake can materially change the order. The allowance is added to calculated volume, not to each dimension. Subgrade variation, over-excavation, reinforcement, delivery minimums and product yield can change the quantity purchased. The estimate is not a structural design.
Replace the illustrative length (ft) value (20) with your own value, then complete the other inputs for the same scenario. Convert depth to the requested unit and measure each section; apply waste after calculating the geometric volume.