Concrete Volume Calculator
Calculate concrete volume in cubic yards, cement bags, and truckloads. The field engineer's essential tool.
Free · No signup · By the analysts at Blackridge Research · Updated 2026-07-18
Inputs
Results
What this means
Adjust the inputs to calculate.
About the Concrete Volume Calculator
Concrete volume calculation is essential for ordering concrete, planning pours, and estimating materials.
This calculator provides volume in cubic yards, cement bags, and truckloads.
Formula
Volume = Length × Width × Thickness / 27
- L
- — Length (ft)
- W
- — Width (ft)
- T
- — Thickness (ft)
- V
- — Volume (cubic yards)
How to use this calculator
- 1
Enter length
The length of the pour in feet.
- 2
Enter width
The width of the pour in feet.
- 3
Enter thickness
The thickness of the pour in feet.
Example calculations
Foundation slab concrete
A 40 ft × 30 ft slab with 6-inch (0.5 ft) thickness.
Volume = 40 × 30 × 0.5 = 600 cu ft = 22.2 cu yd. Bags = 22.2 × 6 = 133 bags.
- Concrete volume:
- 22.2 cu yd
- Cement bags:
- 133 bags
- Truckloads:
- 3 trucks
You need 22.2 cubic yards of concrete (about 3 truckloads).
Interpreting your results
Concrete volume determines the amount of material to order.
Always order 5-10% extra for waste and spillage.
Need the market data behind this calculator?
The Concrete Volume Calculator is only as good as its inputs. Blackridge Research publishes syndicated market reports with vetted market sizes, growth rates, and competitive landscapes across 40+ industries — and builds custom studies when the shelf report doesn't exist.
Industry applications
Business
- Material ordering: determine concrete quantities for orders.
- Cost estimation: calculate material costs.
- Project planning: schedule concrete deliveries.
Construction
- Foundation work: calculate concrete for footings and slabs.
- Structural elements: estimate concrete for columns and beams.
- Paving: calculate concrete for roads and parking areas.
Research
- Material analysis: assess concrete requirements.
- Cost studies: analyze concrete costs.
Common mistakes to avoid
-
✗ Forgetting to convert thickness to feet
Convert inches to feet (divide by 12).
-
✗ Not accounting for waste
Order 5-10% extra for waste and spillage.
Frequently asked questions
›How many cubic yards in a concrete truck?
Standard concrete trucks carry 8-10 cubic yards.
›How many bags of cement per cubic yard?
Approximately 6 bags (94 lb each) per cubic yard.
Glossary
- Cubic yard:
- A unit of volume equal to 27 cubic feet.
- Portland cement:
- The most common type of cement used in concrete.
- Slump:
- A measure of concrete consistency and workability.
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