Concrete Calculator

Estimates volume and weight of concrete needed. Purchasing slightly more than estimated reduces the probability of having insufficient concrete.

Slabs, Square Footings, or Walls
Concrete Required
Volume:
Cubic Yards:
Weight (approx):
Bags (40kg):
Hole, Column, or Round Footings
Concrete Required
Volume:
Cubic Yards:
Weight (approx):
Circular Slab or Tube
Concrete Required
Volume:
Cubic Yards:
Curb and Gutter Barrier
Concrete Required
Volume:
Weight (approx):
Stairs
Concrete Required
Volume:
Weight (approx):
Concrete Reference
Density: ~2,400 kg/m³ (150 lbs/ft³)
1 m³ = 1.308 yd³ = 25–30 bags (40kg)
Tip: Order 5–10% extra for waste and spillage.
Cure time: 28 days for full strength.

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