How Much Does a Bag of Concrete Weigh?
Quick answer
The number on the bag is the dry weight: common sizes are 40, 50, 60 and 80 lb. Adding water increases the wet weight by roughly 10–12%.
Bagged concrete is sold by dry weight. An 80 lb bag weighs 80 lb on the shelf; once mixed it weighs a bit more because of the added water, and it yields about 0.6 ft³ of concrete.
| Bag size | Mixed yield | Mixed weight (approx.) |
|---|---|---|
| 40 lb | 0.30 ft³ | ~44 lb |
| 60 lb | 0.45 ft³ | ~66 lb |
| 80 lb | 0.60 ft³ | ~88 lb |