How Many Bags of Concrete for a 10x10 Slab?
Quick answer: 56 bags of 80lb concrete for a standard 4-inch thick 10x10 slab (with 5% waste). Use the calculator below for any thickness.
slab Dimensions
Total Material Needed
Recommended For This Job
The Quick Answer: 10x10 Concrete Slab Bag Count
| Thickness | Cubic Feet | 80lb Bags | 60lb Bags |
|---|---|---|---|
| 3 inches | 25 | 44 | 59 |
| 4 inches (standard) | 33.3 | 56 | 74 |
| 5 inches | 41.7 | 70 | 93 |
| 6 inches | 50 | 88 | 117 |
* Includes 5% waste factor. 80lb bag yield: 0.60 cu ft. 60lb bag yield: 0.45 cu ft.
How We Calculate Bags for a 10x10 Slab
10 ft × 10 ft × 0.333 ft (4 in) = 33.3 cubic feet
33.3 × 1.05 (5% waste) = 34.97 cubic feet
34.97 ÷ 0.60 (80lb bag yield) = 59 bags (rounded up)
A 10x10 slab is firmly in DIY territory at just over 1.2 cubic yards. Mixing bags by hand or with a small electric mixer is totally manageable. A ready-mix truck would likely charge short-load fees that make bags the better value.
Frequently Asked Questions
How many 80lb bags of concrete do I need for a 10x10 slab?
For a standard 4-inch thick 10x10 slab, you need approximately 56 bags of 80lb concrete including a 5% waste factor.
How many 60lb bags of concrete for a 10x10 slab?
You will need approximately 74 bags of 60lb concrete for a 4-inch thick 10x10 slab with 5% waste included.
Can I pour a 10x10 slab myself?
Yes. A 10x10 slab at 4 inches thick is one of the most common DIY concrete projects. With a rented or borrowed electric mixer, one or two people can complete the pour in a day.
How much does a 10x10 concrete slab cost in materials?
At roughly $6 per 80lb bag, a 10x10 slab costs around $336-$370 in bag materials alone. Use the cost calculator above for a full estimate including ready-mix pricing.