Concrete for a 14x14 Slab
Order 2.66 yd with 10% waste — or 109 × 80 lb bags / 146 × 60 lb bags.
By thickness
| Thickness | Cubic yards | +10% waste | 80 lb bags | Typical use |
|---|---|---|---|---|
| 4" | 2.42 | 2.66 | 109 | Patio, shed pad, walkway |
| 5" | 3.02 | 3.33 | 137 | Light vehicle traffic |
| 6" | 3.63 | 3.99 | 164 | Driveway, garage |
Bags or the truck?
For this 196 sq ft slab at 4": bags ≈ $709 (109 × 80 lb — that's 8,720 lb of mixing) vs ready-mix ≈ $450 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 14x14 slab?
A 14x14 slab at the standard 4-inch thickness needs 2.42 cubic yards of concrete — order 2.66 yards with a 10% waste margin. At 6 inches it needs 3.63 yards.
How many bags of concrete for a 14x14 slab?
At 4 inches thick: 109 bags of 80 lb concrete mix or 146 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 14x14 slab?
Ready-mix. Bags for this slab would cost about $709 in material and require mixing 8,720 lb by hand; a delivered order runs roughly $450 and arrives ready to pour.