How many cubic feet are in a concrete bag?
Bag volume depends on product yield, not just bag weight. A common planning value is about 0.60 cubic feet for an 80 lb bag and about 0.45 cubic feet for a 60 lb bag.
Use yield, not only weight
Different mixes and brands can have different yields. The calculator multiplies bag count by the yield you enter, so the product label should be the final source.
Bags per cubic yard
One cubic yard is 27 cubic feet. At 0.60 cubic feet per bag, a cubic yard takes about 45 bags. At 0.45 cubic feet per bag, it takes about 60 bags.
Concrete bag planning table
Uses common planning yields: 0.60 cu ft per 80 lb bag and 0.45 cu ft per 60 lb bag. Verify the product label.
| Concrete volume | Cubic feet | 80 lb bags | 60 lb bags |
|---|---|---|---|
| 0.25 cu yd | 6.75 cu ft | 12 bags | 15 bags |
| 0.50 cu yd | 13.5 cu ft | 23 bags | 30 bags |
| 1.00 cu yd | 27 cu ft | 45 bags | 60 bags |
| 2.00 cu yd | 54 cu ft | 90 bags | 120 bags |
Before you calculate
- Use the yield printed on the bag you plan to buy, because 40 lb, 50 lb, 60 lb, and 80 lb products can differ.
- Measure project area and thickness before converting the volume into bags.
- Keep waste visible for over-excavation, uneven base, mixing loss, and final top-off.
Common mistakes
- Assuming every bag yields the same cubic feet.
- Buying by bag weight without checking volume yield.
- Forgetting that the final answer must round up to whole bags.
Formula
cubic feet = bagCount * yieldPerBag
Assumptions
- Default 60 lb bag yield is a common planning value.
- Use the actual product label for final ordering.
- Moisture and mix type can change yield.
Example
Estimated concrete volume: 0.45 cubic feet
How to use this calculator
- Enter bags in count.
- Enter yield per bag in cu ft.
- Review the live estimate and compare it with the example result.
- Check the formula, assumptions, product labels, and site conditions before using the Volume of Concrete in 60 lb Bag Calculator result to plan materials.
Before you buy materials
- Round up to full bags and compare the total bag count with ready-mix if the quantity gets large.
- Check the product label for yield, water instructions, working time, and intended use.
FAQ
What is the example volume of concrete in 60 lb bag cubic-foot result?
Use bags, yield per bag, then calculate the planning result. In the default example, the result is 0.45 cubic feet.
How many cubic feet in an 80 lb bag of concrete?
A common planning yield is about 0.60 cubic feet, but check the product label for the exact yield.
How many cubic feet in a 60 lb bag of concrete?
A common planning yield is about 0.45 cubic feet, but the actual product label should be used for final ordering.
How many bags are in one cubic yard?
Using common yields, about 45 bags of 80 lb concrete or about 60 bags of 60 lb concrete make one cubic yard.
Can bag yield vary by product?
Yes. Mix type, aggregate, package size, and manufacturer instructions can change yield.
Related calculators
This calculator is for planning estimates only. Verify final quantities with product labels, project conditions, and a qualified professional when accuracy matters.