Concrete & Block Calculators
Planning a slab, footing or block wall? These calculators turn your dimensions into the quantities suppliers actually sell: cubic yards of concrete, numbers of blocks, bags of mortar and total material cost. Every tool shows the formula with your numbers plugged in, so you can check the estimate before you order.
Concrete Block Calculator
How many CMU or cinder blocks a wall needs, plus mortar and cost.
Concrete Slab Cost Calculator
Slab cubic yards, bags vs ready-mix, and total cost per square foot.
Block Wall Calculator
Courses, blocks, cap, mortar, grout, rebar and total cost.
Which calculator do I need?
- I just need a block count
- Use the Concrete Block Calculator — enter wall length and height, subtract openings, and get the number of blocks and mortar bags.
- I'm pouring a slab or pad
- Use the Concrete Slab Cost Calculator for cubic yards, bags vs ready-mix, and a price per square foot.
- I'm building a full wall
- Use the Block Wall Calculator for courses, blocks, cap blocks, mortar, core-fill grout, rebar and total cost.