Concrete for a 10×14 slab
1.73 cubic yards (86 × 80 lb bags)
for a 10×14 ft slab 4 inches thick: 46.7 cu ft. Bag counts include 10% extra; at 6 inches you need 2.59 yards.
A 10×14 foot slab covers 140 square feet. At the standard 4 inch thickness for a patio, walkway or shed floor, that is 46.7 cubic feet of concrete, or 1.73 cubic yards. At this size you can mix 86 bags of 80 lb (about $559 and a long day of mixing) or order 2 yards of ready-mix (about $330, plus the short-load fee most suppliers charge under 3 to 4 yards).
Concrete for a 10×14 slab by thickness
| Thickness | Cubic yards | Cubic feet | 80 lb bags | 60 lb bags | 40 lb bags |
|---|---|---|---|---|---|
| 3 in | 1.3 | 35 | 65 | 86 | 129 |
| 4 in | 1.73 | 46.7 | 86 | 115 | 172 |
| 5 in | 2.16 | 58.3 | 107 | 143 | 214 |
| 6 in | 2.59 | 70 | 129 | 172 | 257 |
| 8 in | 3.46 | 93.3 | 172 | 229 | 343 |
Bag counts include 10% extra for spillage and uneven ground. Cubic yards and cubic feet are the exact volume.
How it’s worked out
- Convert the thickness to feet: 4 in ÷ 12 = 0.333 ft.
- Multiply length × width × thickness: 14 × 10 × 0.333 = 46.67 cu ft.
- Divide by 27 for cubic yards: 46.67 ÷ 27 = 1.728 cu yd.
- Add 10% and divide by the bag yield: 51.33 ÷ 0.6 = 86 bags of 80 lb mix (rounded up).
Under the slab, plan on 4 inches of compacted gravel: about 1.73 cubic yards. For driveways and anything that carries a vehicle, go to 5 or 6 inches and add rebar or wire mesh.
Change the numbers
Other slab sizes
- 10×15 slab
- 10×12 slab
- 10×16 slab
- 8×14 slab
- 12×14 slab
- 10×10 slab
- 10×18 slab
- 6×14 slab
- 14×14 slab
- 8×10 slab
- 10×20 slab
- 5×14 slab
Questions
- How many bags of concrete do I need for a 10×14 slab?
- At 4 inches thick, a 10×14 slab takes 86 bags of 80 lb concrete mix, 115 bags of 60 lb mix or 172 bags of 40 lb mix, including 10% extra.
- How many yards of concrete for a 10×14 slab?
- 1.73 cubic yards at 4 inches thick, 2.16 at 5 inches and 2.59 at 6 inches, before adding extra for waste.
- How much does a 10×14 concrete slab cost?
- The concrete alone for a 4 inch 10×14 slab costs about $559 in 86 bags of 80 lb mix (at about $7 a bag) or about $330 for 2 yards of ready-mix (at about $165 a yard, before delivery fees). Professionally poured slabs usually run $6 to $12 per square foot, about $840 to $1,680 for 140 sq ft.
- How much does a 10×14 slab weigh?
- About 3.4 tons at 4 inches thick (concrete weighs about 145 lb per cubic foot).