Concrete Block Calculator

Calculate the number of concrete blocks needed for a wall of a given size.

Wall height:

Wall width:

Block width:

Block height:

Single block's price:

Result:

Wall area:

Concrete Blocks Needed:

Total Price:

How to use this calculator?

Enter the height and width of the wall.
Enter the height and width of the concrete blocks.
Optionally, enter the price of a single block, allowing the calculator to estimate the total cost.

Firstly, calculate the wall area and block area. In both cases, simply multiply the height by the width.

Wall area = Wall height * Wall width

Block area = Block height * Block width

Now, divide the wall area by the block area.

Concrete Blocks Needed = Wall area / Block area

Now you should round up the value to ensure you have enough blocks. Use the "ceil" rounding for this purpose.

Calculate the number of concrete blocks (16" x 8") needed for a wall (height: 6 ft, width: 25 ft))

Wall area = 6 ft * 25 ft = 150 ft²

Block area = 16 in * 8 in = 128 in² = (128 / 144) ft² ≈ 0.89 ft²

Concrete blocks needed = 150 / 0.89 ≈ 168.54 ≈ 169