Concrete Calculator
Slabs, Square Footings, or Walls
A rectangular pour — a floor, a pad, a wall, a square footing.
Example
This is a sample result, not your calculation. Enter your own values to replace it.
Enter the measurements above, then calculate how much concrete the pour needs.
Volume: — cubic feet
or — cubic yards
or — cubic meters
If using pre-mixed concrete with density of 2,130 kg/m³ or 133 lbs/ft³:
- Weight needed
- — lbs or — kg
- Using 60-lb bags
- — bags
- Using 80-lb bags
- — bags
Different types of concrete can have very different densities. Order a little more than the estimate — running short mid-pour is far worse than having a bag left over.
Check your entries
Changes update automatically.
Hole, Column, or Round Footings
A cylinder — a post hole, a column, a round footing.
Example
This is a sample result, not your calculation. Enter your own values to replace it.
Enter the measurements above, then calculate how much concrete the pour needs.
Volume: — cubic feet
or — cubic yards
or — cubic meters
If using pre-mixed concrete with density of 2,130 kg/m³ or 133 lbs/ft³:
- Weight needed
- — lbs or — kg
- Using 60-lb bags
- — bags
- Using 80-lb bags
- — bags
Different types of concrete can have very different densities. Order a little more than the estimate — running short mid-pour is far worse than having a bag left over.
Check your entries
Changes update automatically.
Circular Slab or Tube
A ring — a circular slab with a hole, or a pipe surround.
Example
This is a sample result, not your calculation. Enter your own values to replace it.
Enter the measurements above, then calculate how much concrete the pour needs.
Volume: — cubic feet
or — cubic yards
or — cubic meters
If using pre-mixed concrete with density of 2,130 kg/m³ or 133 lbs/ft³:
- Weight needed
- — lbs or — kg
- Using 60-lb bags
- — bags
- Using 80-lb bags
- — bags
Different types of concrete can have very different densities. Order a little more than the estimate — running short mid-pour is far worse than having a bag left over.
Check your entries
Changes update automatically.
Curb and Gutter Barrier
A kerb run with its gutter flag, poured as one.
Example
This is a sample result, not your calculation. Enter your own values to replace it.
Enter the measurements above, then calculate how much concrete the pour needs.
Volume: — cubic feet
or — cubic yards
or — cubic meters
If using pre-mixed concrete with density of 2,130 kg/m³ or 133 lbs/ft³:
- Weight needed
- — lbs or — kg
- Using 60-lb bags
- — bags
- Using 80-lb bags
- — bags
Different types of concrete can have very different densities. Order a little more than the estimate — running short mid-pour is far worse than having a bag left over.
Check your entries
Changes update automatically.
Stairs
A flight, counted by its risers.
Example
This is a sample result, not your calculation. Enter your own values to replace it.
Enter the measurements above, then calculate how much concrete the pour needs.
Volume: — cubic feet
or — cubic yards
or — cubic meters
If using pre-mixed concrete with density of 2,130 kg/m³ or 133 lbs/ft³:
- Weight needed
- — lbs or — kg
- Using 60-lb bags
- — bags
- Using 80-lb bags
- — bags
Different types of concrete can have very different densities. Order a little more than the estimate — running short mid-pour is far worse than having a bag left over.
Check your entries
Changes update automatically.