CONCRETE ESTIMATOR
80-lb Concrete Bag Calculator
Convert your project volume into an approximate number of 80-lb concrete bags.
Use the calculator →Quick answer
At 0.60 cubic feet per bag, 27 cubic feet ÷ 0.60 equals about 45 bags per cubic yard before waste.
Your final order should reflect the actual dimensions, conditions, product yield and any buffer you choose.
How the calculation works
This site's calculator uses an approximate yield of 0.60 cubic feet per 80-lb bag. Always verify the yield printed on the exact mix you plan to buy.
Calculate your actual project
Enter your measurements and see yards plus five bag sizes.
Before you buy
- Measure the actual area and depth.
- Confirm the yield printed on the bag or supplier specification.
- Plan for site variation and spillage.
- For larger pours, compare ready-mix delivery with bagged material and labor.