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Construccion

Calculadora verificada con fórmula transparente

Construccion

Concrete Yardage Calculator.

Estimates the volume of concrete needed for a slab in cubic yards based on length, width, and thickness.

Los resultados se actualizan en vivo mientras escribes.
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Tus entradas

Cómo funciona

  1. 1

    Convert thickness from inches to feet by dividing by 12.

  2. 2

    Multiply length, width, and thickness in feet to get cubic feet.

  3. 3

    Divide cubic feet by 27 to convert to cubic yards.

  4. 4

    Round the result to two decimal places.

round((length * width * (thickness / 12)) / 27 * 100) / 100

Preguntas frecuentes

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.

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Resultados

Fórmula verificada

Concrete Needed

1,23cu yd

Pregunta lo que sea

Estimación solo como guía general: verifica decisiones importantes con un profesional adecuado.

Cómo funciona

Estimates the volume of concrete needed for a slab in cubic yards based on length, width, and thickness.

  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.

Fórmulas

Las matemáticas detrás de esta calculadora, escritas para que puedas verificar el resultado.

Volume of a rectangular slab

V = L × W × T

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

Casos de uso reales

Dónde aparece este cálculo en la vida cotidiana.

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

Consejos y errores comunes

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).

Supuestos y limitaciones

  • Use the stated inputs and units.
  • Results are estimates for planning and education.
  • Check measurements and source data before making an important decision.