Cubic Yards Concrete Calculator
By Vinod Kondeti · Updated
Ready-mix concrete is sold by the cubic yard. One cubic yard is 3 ft × 3 ft × 3 ft = 27 ft³ (0.765 m³). Enter any rectangular pour here to get the number to give your supplier.
How do I measure for a cubic yards pour?
- Formula: yd³ = length (ft) × width (ft) × depth (in) ÷ 12 ÷ 27.
- Shortcut: at 4 in thick, one cubic yard covers about 81 ft².
- Suppliers typically sell in fractions of a yard, so round up.
Cubic yards concrete questions
How many square feet does a yard of concrete cover?
At 4 in: 81 ft². At 5 in: 64.8 ft². At 6 in: 54 ft². That is 27 ÷ thickness in feet.
How do I convert cubic feet to yards?
Divide by 27. For example, 100 ft³ ÷ 27 = 3.70 yd³.
Bag yields: 0.30 / 0.45 / 0.60 ft³ for 40 / 60 / 80 lb standard concrete mix (manufacturer data sheets). The concrete guide has the formulas and worked examples.
Sources
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