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Concrete for a 6 × 6 slab
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0.44 yd³
6 × 6 ft (36 ft²) at 4 in thick, before waste
Concrete for a 6 × 6 slab by thickness
| Thickness | yd³ | yd³ +10% | 80 lb bags | 60 lb bags | Ready-mix @ $165/yd³ |
|---|---|---|---|---|---|
| 4 in | 0.44 | 0.49 | 23 | 30 | $81 |
| 5 in | 0.56 | 0.61 | 28 | 37 | $101 |
| 6 in | 0.67 | 0.73 | 33 | 44 | $121 |
| 8 in | 0.89 | 0.98 | 45 | 59 | $161 |
Bags include 10% extra. Ready-mix prices vary by region; small loads often carry a short-load fee.
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FAQ
How much concrete do I need for a 6x6 slab?
A 6 × 6 ft slab 4 in thick is 0.44 cubic yards; order about 0.49 yd³ with 10% extra. At 6 in thick it is 0.67 yd³.
How many bags of concrete for a 6x6 slab?
About 23 bags of 80 lb concrete (or 30 × 60 lb) at 4 in thick including 10% extra.
Other slab sizes
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- 14 × 14 slab
- 12 × 24 slab
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- 16 × 16 slab
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- 16 × 24 slab
- 18 × 20 slab
- 20 × 20 slab
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- 20 × 30 slab
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- 24 × 30 slab
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- 30 × 50 slab
- 40 × 40 slab
- 40 × 60 slab
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