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Input length, width and depth of the area. Click the button to calculate the volume of concrete and man-hours (not including mixing) needed for this job.
This calculator is to be used as an estimating tool only.
If you need to pour a concrete slab for a patio, deck stair landing, walkway or other building project, you need to know how much concrete the job requires. Our concrete calculator for slabs is a good way to estimate how much concrete mix you’ll need to purchase.
You can use this estimating tool as a concrete bag calculator. Once you enter the length, width and depth of the slab, Lowe’s concrete slabs calculator estimates the number of 80-lb bags of concrete you’ll need.
For some projects, you may want to know the volume of concrete you’ll need to pour. In addition to estimating how many bags of concrete mix you’ll need for a job, our concrete calculator estimates how many cubic feet of concrete the slab will require. If you need the volume in cubic yards, simply divide the estimate of cubic feet by 27 to calculate yards of concrete needed for the project. For example, if your area is 10 feet by 10 feet and you need a depth of 3 inches, you’ll need approximately 25 cubic feet or about .93 cubic yards of concrete.
Keep in mind, this calculator is an estimating tool only. It’ll help you plan, but a variety of factors may change the actual amount of concrete mix a project will require.
Whether you’re shopping for concrete, cement and stucco mixes or concrete and masonry tools, Lowe’s has what you need. We’ve also got project ideas and calculators to help you do the job right.