Dedicated Concrete Slab Calculator
Input the length, width, and thickness of your slab to get an instant material estimate.
slab Dimensions
1
Live Blueprint
10' L
10' W
4"
Total Material Needed
Bags()
Total Volume
Bags (DIY)$
Recommended For This Job
Note: Calculation based on slab shape with 5% waste factor.
💡 Pro Tip: For smaller projects, enjoy the convenience of getting bags delivered to your door via Amazon.
How to Measure for a Poured Concrete Slab
Whether you are pouring a small AC pad, a standard 12x12 patio, or an entire driveway extension, accurate estimates are critical. This dedicated concrete slab calculator automatically converts your standard dimensional inputs (feet & inches, or meters & centimeters) into the exact cubic yards and total bag count required.
Common Poured Slab Dimensions & Bags Required
- 10x10 Slab (4 inches thick)Takes approximately 1.25 cubic yards. You will need about 56 bags of 80lb concrete.
- 12x12 Slab (4 inches thick)Takes nearly 1.8 cubic yards. Prepare to buy or order about 80 bags of 80lb concrete (or simply order a truck).
- 4x4 AC Pad (4 inches thick)Needs only ~0.2 cubic yards. Very DIY friendly. Requires exactly 9 bags of 80lb concrete.