Blocks, Walls, Footings and Rebar

These calculators count the pieces for built work. Concrete block and retaining wall give blocks (and caps and gravel), footing gives the concrete for a strip or pad, and rebar gives bars and weight for a slab.

Tools in this group

• Concrete Block Calculator — Enter the wall length and height and pick the block size to get the number of concrete blocks and courses.
• Concrete Footing Calculator — Choose a strip, pad or pier footing, enter its size and get the concrete to order, bags and the footing rebar.
• Concrete Slab Rebar Calculator — Enter the slab size, bar spacing, cover and bar size to get the number of bars, total length, stock bars to buy and weight.
• Retaining Wall Block Calculator — Enter the wall length and height and the block size to get the blocks, caps and gravel for a segmental retaining wall.