建筑
已验证计算器，公式透明
Concrete Yardage Calculator.
Estimates the volume of concrete needed for a slab in cubic yards based on length, width, and thickness.
您的输入
工作原理
- 1
Convert thickness from inches to feet by dividing by 12.
- 2
Multiply length, width, and thickness in feet to get cubic feet.
- 3
Divide cubic feet by 27 to convert to cubic yards.
- 4
Round the result to two decimal places.
round((length * width * (thickness / 12)) / 27 * 100) / 100常见问题
How do I account for waste or overage?
Add 5-10% to the calculated yardage to cover spillage, uneven subgrade, or slight over-excavation.
Can I use this for round or irregular shapes?
No, this calculator is for rectangular slabs. For other shapes, break them into rectangles or use a different method.
What if my thickness is in inches but I want feet?
The calculator handles the conversion automatically. Just enter the thickness in inches.
工作原理
Estimates the volume of concrete needed for a slab in cubic yards based on length, width, and thickness.
- Convert thickness from inches to feet by dividing by 12.
- Multiply length, width, and thickness in feet to get cubic feet.
- Divide cubic feet by 27 to convert to cubic yards.
- Round the result to two decimal places.
公式
此计算器背后的数学公式，供您核对结果。
Volume of a rectangular slab
Multiply length, width, and thickness (all in feet) to get volume in cubic feet.
Example:
Input: L=10 ft, W=10 ft, T=4 in (0.333 ft)
Calculation: 10 × 10 × 0.333 = 33.3 cu ft
Result: 33.3 cu ft = 1.23 cu yd
实际应用场景
此计算在日常生活中的应用。
Patio or walkway
Plan concrete for a new patio or walkway by entering the dimensions.
Example: 10 ft × 12 ft × 4 in
Footings or foundations
Estimate concrete for footings or foundation slabs.
Example: 20 ft × 20 ft × 8 in
Driveway or garage floor
Calculate the concrete needed for a driveway or garage floor.
Example: 24 ft × 24 ft × 6 in
提示与常见错误
Tips
- Always order a little extra concrete (5-10%) to avoid running short.
- Check with your supplier for minimum order quantities.
- Use a laser level to ensure the subgrade is even before pouring.
- Consider using rebar or wire mesh for added strength.
Common Mistakes to Avoid
- Forgetting to convert thickness from inches to feet.
- Not accounting for waste or over-excavation.
- Mixing up cubic feet and cubic yards (1 cu yd = 27 cu ft).
假设与限制
- Use the stated inputs and units.
- Results are estimates for planning and education.
- Check measurements and source data before making an important decision.