80 lb Bag Concrete Calculator
The definitive tool for calculating exactly how many 80 pound bags of concrete you need.
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 much concrete is in one 80 lb bag?
Whether you are using standard Quikrete or high-strength Sakrete mix, an 80-pound bag of pre-mixed concrete typically yields about 0.60 cubic feet when mixed with water. This 80 lb bag calculator utilizes that exact industry-standard yield to prevent you from making multiple trips to Lowe's or Home Depot.
80 lb Bag 'Rule of Thumb' Equivalents
- How many 80 lb bags makes a yard?
It takes exactly 45 bags of 80lb concrete to create 1 full cubic yard (27 cubic feet). - How much square feet does an 80 lb bag cover?
If you are pouring a standard 4-inch thick slab, a single 80-pound bag will cover approximately 1.8 square feet.