Concrete Calculator Yards
Calculate concrete cubic yards for your construction project. Perfect for ordering ready-mix concrete.
Fill in the fields and press Calculate.
1. Enter Dimensions
All measurements will be converted to cubic yards.
2. Results
Your concrete requirements in cubic yards.
Enter dimensions and click calculate to see results.
💡 Pro Tips
- • Add 10% extra for waste and overage
- • Most concrete trucks hold 10 cubic yards
- • Order concrete in 0.5 yard increments
- • Consider weather conditions for curing
Decision Guide
Turn cubic yards into an order plan
Cubic yards are only useful if they become an order number. Use the total with waste, then decide whether the load is small enough for a short-load fee problem or big enough to think about truck sequencing.
Ready-mix is the safer default
Use the waste-adjusted total, not just net yards, when you call a supplier.
Truck capacity is only part of the plan. Delivery minimums, short-load fees, and access still matter.
Before you order
- Always compare net yards and total yards with waste.
- Truck count is helpful, but delivery policy can matter more.
- Shape selection changes the ordering number, not just the display.
Next steps
- Use total yards with waste when you call suppliers.
- Ask about short-load fees and access constraints.
- Recheck dimensions if the total is near a truck threshold.
Common mistakes
- Stopping at net yards and forgetting the waste margin.
- Using truck capacity as the whole logistics plan.
- Ordering from a number that came from the wrong shape inputs.
Use this yards calculator for planning only. Local delivery rules and site conditions can still change the final order plan.
How to Calculate Concrete in Cubic Yards
Understanding Cubic Yards
A cubic yard is the standard unit for ordering ready-mix concrete. One cubic yard equals 27 cubic feet, which is approximately the amount of concrete that fits in a standard concrete truck.
Basic Formula
For rectangular shapes (slabs, foundations, walls):
Cubic Yards = (Length × Width × Thickness) ÷ 27
For Cylindrical Shapes
For columns and cylindrical footings:
Cubic Yards = (π × Radius² × Height) ÷ 27
Common Thicknesses
- Driveways: 4-6 inches
- Patios: 4 inches
- Sidewalks: 4 inches
- Foundations: 8-12 inches
- Walls: 6-8 inches
Frequently Asked Questions
How do I calculate concrete cubic yards?
Use our cubic yards calculator by entering the length, width, and thickness of your project. The calculator will automatically convert to cubic yards and provide material estimates.
How many cubic yards does a concrete truck hold?
Most concrete trucks can hold 10 cubic yards of concrete. For large projects, multiple truck loads may be required.
What's the difference between cubic feet and cubic yards?
1 cubic yard equals 27 cubic feet. Cubic yards are the standard unit for ordering ready-mix concrete from suppliers.
How much concrete for a 20x20 slab?
For a 20x20 slab with 4-inch thickness: 20 × 20 × (4/12) = 133.33 cubic feet = 4.94 cubic yards. Add 10% waste = 5.43 cubic yards.
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