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Concrete calculator

Calculator to estimate how many cubic feet and cubic yards of concrete to buy for the project

Input parameters Footing / Slab Wall Column W1 L2 T3   H4 L5 T6   H7 R8     Feet Feet Inches   Feet Feet Inches   Feet Inches Waste factor9               5% 10% 15%   5% 10% 15%   5% 10% 15%

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Computed parameters Amount of concrete to buy 10 For footing or slab For wall For column ft3 ft3 ft3 yd3 yd3 yd3

Concrete calculator estimates quantity of concrete in cubic feet and cubic yards necessary to order for pouring concrete slab, making concrete footing, foundation or concrete column. For estimating amount of concrete to purchase all input parameters must be entered as real numbers. Fractions must be converted to decimals. Inches values for width (W), length (L) and height (H) must be entered as real number means 3 inches = 0.25 feet; 6” = 0.5’; 9” = 0.75’ and so on. All computed parameters rounded to the whole bigger number.

Input parameters:

¹ W – Width of concrete footing or slab in feet.

² L – Length of footing or slat in feet. Input real numbers only.

³ T – Thickness of concrete slab or footing in inches.

⁴ H – Height of concrete wall in feet.

⁵ L – Length of concrete wall in feet.

⁶ T – Thickness of concrete wall in inches.

⁷ H – Height of concrete column in feet.

⁸ R – Radius of concrete column in inches.

⁹ Adding an extra 5% as a waste factor is typical for majority of basic concrete projects. During complex tasks waste factor could be significantly increased.

Computed parameters:

¹⁰ Quantity of concrete to purchase in cubic feet and cubic yards is an actual amount of already mixed concrete necessary to buy for performing certain concrete project.