Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
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.
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.
Key differences
| Concrete Slab Bag Calculator | Concrete Footing Calculator | |
|---|---|---|
| Category | Construction | Construction |
| Inputs required | 5 | 3 |
| Result | Bags of Concrete Needed (bags) | Concrete Required (cubic yards) |
| What it does | 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. | Calculates the cubic yards of concrete needed for rectangular foundation footings. Use this before ordering ready-mix concrete for decks, fences, or structural foundations. |