Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Construction
Concrete Footing Calculator
Calculates the cubic yards of concrete needed for rectangular foundation footings. Use this before ordering ready-mix concrete for decks, fences, or structural foundations.
Fill in the required fields to see your result.
Construction
Concrete Slab Bag Calculator
Find out how many bags of pre-mixed concrete you need to pour a slab. Enter the slab length, width, and thickness, pick your bag size, and add a waste allowance to get the exact bag count for footings, patios, shed bases, and walkways.
Fill in the required fields to see your result.
Key differences
| Concrete Footing Calculator | Concrete Slab Bag Calculator | |
|---|---|---|
| Category | Construction | Construction |
| Inputs required | 3 | 5 |
| Result | Concrete Required (cubic yards) | Bags of Concrete Needed (bags) |
| What it does | Calculates the cubic yards of concrete needed for rectangular foundation footings. Use this before ordering ready-mix concrete for decks, fences, or structural foundations. | Find out how many bags of pre-mixed concrete you need to pour a slab. Enter the slab length, width, and thickness, pick your bag size, and add a waste allowance to get the exact bag count for footings, patios, shed bases, and walkways. |