Concrete for a 10x10 Slab
Order 1.36 yd with 10% waste — or 56 × 80 lb bags / 75 × 60 lb bags.
By thickness
| Thickness | Cubic yards | +10% waste | 80 lb bags | Typical use |
|---|---|---|---|---|
| 4" | 1.23 | 1.36 | 56 | Patio, shed pad, walkway |
| 5" | 1.54 | 1.70 | 70 | Light vehicle traffic |
| 6" | 1.85 | 2.04 | 84 | Driveway, garage |
Bags or the truck?
For this 100 sq ft slab at 4": bags ≈ $364 (56 × 80 lb — that's 4,480 lb of mixing) vs ready-mix ≈ $266 delivered. The truck wins here. Prices are national ballparks — your local quote rules.
Adjust the numbers
Common questions
How much concrete do I need for a 10x10 slab?
A 10x10 slab at the standard 4-inch thickness needs 1.23 cubic yards of concrete — order 1.36 yards with a 10% waste margin. At 6 inches it needs 1.85 yards.
How many bags of concrete for a 10x10 slab?
At 4 inches thick: 56 bags of 80 lb concrete mix or 75 bags of 60 lb. At this volume, delivered ready-mix is usually cheaper and far less work than mixing bags.
Should I use bags or ready-mix for a 10x10 slab?
Ready-mix. Bags for this slab would cost about $364 in material and require mixing 4,480 lb by hand; a delivered order runs roughly $266 and arrives ready to pour.