Concrete Slab Calculators
A slab is volume plus reinforcement plus the thickened edge nobody remembers to price. These run the common sizes end to end, so you can compare a 20x20 patio against a 24x24 garage pad without redoing the arithmetic each time.
In this topic
- Concrete Slab Cost Calculator
Concrete volume, bag count and slab cost.
- 20x20 Concrete Slab Cost Calculator
Concrete, base and cost for a 20 by 20 foot slab.
- 24x24 Garage Slab Concrete & Cost Calculator
Concrete, base and cost for a two-car garage slab.
- 30x40 Shop Slab Cost Calculator
Concrete, base and cost for a 30 by 40 shop slab.
- Slab-on-Grade Foundation Cost Calculator
Concrete, thickened edge and cost for a monolithic slab foundation.
- Concrete Patio Slab Cost Calculator
Concrete, base and cost for a patio slab.
- Rebar Grid & Spacing Calculator
Bar count, total footage and cost for a rebar mat.
Related guides
- How Thick Should a Concrete Slab Be?
Four inches for foot traffic, five to six where vehicles park. What each inch costs, and why the base under the slab matters more than the last inch of concrete.
More in Concrete & Foundation Calculators
- Footing & Pier Calculators (2 calculators)
- Concrete Driveway Calculators (2 calculators)
- Ready-Mix & Delivery Calculators (2 calculators)
- Concrete Stairs & Coating Calculators (2 calculators)
- Concrete & Foundation Calculators (15 calculators)