Our free concrete calculator estimates the exact volume and weight of concrete you need for any project use it as a concrete slab calculator, pad calculator, or footing calculator for slabs, square footings, walls, holes, columns, round footings, circular slabs and tubes, curbs and gutters, and stairs. Simply enter your measurements to get instant results in cubic yards, cubic meters, and pre-mixed concrete bags (60 lb or 80 lb). Always buy slightly more concrete than your estimate to avoid running short mid-pour even a small shortfall can compromise the strength of your finished structure.
Volume: 0.00 cubic feet
or 0.00 cubic yards
or 0.00 cubic meters
If using pre-mixed concrete with density of 2,130 kg/m³ or 133 lbs/ft³*:
| Weight needed | 0 lbs or 0 kg |
| Using 60-lb bags | 0 bags |
| Using 80-lb bags | 0 bags |
* Different types of concrete can have very different densities.
Slabs, Square Footings, or Walls
Total Volume: 0.00 cubic feet
or 0.00 cubic yards
or 0.00 cubic meters
If using pre-mixed concrete with density of 2,130 kg/m³ or 133 lbs/ft³*:
| Total Weight needed | 0 lbs or 0 kg |
| Using 60-lb bags | 0 bags |
| Using 80-lb bags | 0 bags |
* Different types of concrete can have very different densities.
Hole, Column, or Round Footings
Total Volume: 0.00 cubic feet
or 0.00 cubic yards
or 0.00 cubic meters
If using pre-mixed concrete with density of 2,130 kg/m³ or 133 lbs/ft³*:
| Total Weight needed | 0 lbs or 0 kg |
| Using 60-lb bags | 0 bags |
| Using 80-lb bags | 0 bags |
* Different types of concrete can have very different densities.
Circular Slab or Tube
Leave at 0 for a solid circular slab
Total Volume: 0.00 cubic feet
or 0.00 cubic yards
or 0.00 cubic meters
If using pre-mixed concrete with density of 2,130 kg/m³ or 133 lbs/ft³*:
| Total Weight needed | 0 lbs or 0 kg |
| Using 60-lb bags | 0 bags |
| Using 80-lb bags | 0 bags |
* Different types of concrete can have very different densities.
Curb and Gutter Barrier
Total Volume: 0.00 cubic feet
or 0.00 cubic yards
or 0.00 cubic meters
If using pre-mixed concrete with density of 2,130 kg/m³ or 133 lbs/ft³*:
| Total Weight needed | 0 lbs or 0 kg |
| Using 60-lb bags | 0 bags |
| Using 80-lb bags | 0 bags |
* Different types of concrete can have very different densities.
Stairs
