10x12 Concrete Slab Cost & Calculator
Instant answer: A 10×12 ft slab at 4 inches contains 1.48 cubic yards of concrete. Installed: $720–$1,200. DIY material: $250–$400.
Pre-filled to 10×12 ft at 4 inches. Change inputs to recalculate.
Average ready-mix concrete costs $120-$200 per cubic yard.
Calculation Results
Volume
1.48 cubic yards
1.13 m³
Estimated Cost
$222.22
at $150/yd³
Bags Needed
135
40 lb bags
88
60 lb bags
68
80 lb bags
Truck Loads
0.15
10 yd³ per truck
Recommended Mix
Bags (DIY)
Standard 3000 PSI mix
10x12 Slab at Different Thicknesses
| Thickness | Cubic Yards | Material Cost | Installed | Best For |
|---|---|---|---|---|
| 3" | 1.11 | $170-$250 | $540-$900 | Garden paths only (not recommended) |
| 4" | 1.48 | $220-$350 | $720-$1,200 | Patios, sheds, walkways |
| 5" | 1.85 | $280-$430 | $900-$1,500 | Driveways (light vehicles) |
| 6" | 2.22 | $340-$520 | $1,080-$1,800 | Garages, heavy vehicles |
Cost Breakdown for a 10x12 Slab (4 Inches Thick)
- Concrete material (1.48 yd³): $220-$350
- Short-load fee (under 3 yd³): $40-$100
- Site prep (excavation, base, level): $100-$300
- Reinforcement (wire mesh): $40-$80
- Labor (forms, pour, finish): $300-$500
- Total installed: $720-$1,200
DIY 10x12 Concrete Slab — Material List
- Ready-mix delivery (1.5 yd³ ordered): $250-$400 (preferred)
- OR 60-pound bags × 89: $440-$540 + $30-$60 mixer rental
- 2×4 lumber for forms: ~$30 (44 linear feet)
- Gravel base (4 inches under slab): $40-$80
- Welded wire mesh 6"×6": $30-$60
- Form release / curing compound: $20-$30
- Total DIY material: $370-$650
10x12 Slab Common Uses
- Shed foundation (10x10 or 8x12 prefab sheds fit with margin)
- Hot tub pad (most spas need at least 8×8, 10×12 leaves stepping space)
- Generator pad for whole-house standby
- Small patio for table-and-chairs setup
- Workshop slab for small detached structures
- Storage shed for ATVs / small equipment
- Bicycle/canoe storage pad
DIY vs Hire a Contractor
A 10x12 slab is on the boundary. Under 2 cubic yards is genuinely DIY-able for a confident weekend warrior with 1-2 helpers. Hiring saves ~6 hours of physical work for $400-$600 — many homeowners find that worthwhile, especially in hot weather.
If DIY, plan for: 1 day of excavation and forms, 1 day to pour and finish. Concrete sets fast — once it starts, you can't pause. Have all tools and helpers ready before the truck arrives.
Frequently Asked Questions
How much concrete for a 10x12 slab?
10 ft × 12 ft × 4 inches = 40 cu ft = 1.48 cubic yards. Add 10% for waste = order 1.63 cubic yards. At 5 inches thick (driveway depth), it's 1.85 cubic yards.
What does a 10x12 concrete slab cost in 2026?
Installed: $720-$1,200 (broom finish, basic site prep). DIY material-only: $250-$400 for ready-mix delivery or about $300 in 60-pound bags. Stamped or decorative finishes add $700-$1,400.
How many bags of concrete for a 10x12 slab?
At 4 inches thick (1.48 cu yd = 40 cu ft): 60-pound bags (0.45 cu ft each): 89 bags. 80-pound bags (0.6 cu ft each): 67 bags. 40-pound bags (0.3 cu ft each): 134 bags. Ready-mix truck is usually cheaper above 1 cubic yard.
Is a 10x12 slab big enough for a shed?
Yes — fits most prefab sheds (8x10, 8x12, 10x10, 10x12). Pour the slab 4 inches wider on each side than the shed footprint to give you a working margin and prevent water from running back at the structure.
Should a 10x12 slab be 4 or 5 inches thick?
4 inches for patios, walkways, garden sheds. 5 inches for vehicles or heavy equipment. 6 inches for garages. The 1 extra inch increases concrete cost about 25% but doubles load capacity.
Do I need rebar in a 10x12 slab?
Welded wire mesh ($30-$60) is sufficient for non-vehicle slabs. Rebar (#3 on 24-inch centers, ~$50) is better for driveway use. Fiber-reinforced concrete eliminates the need for separate mesh on light-duty slabs.
Related Sizes & Guides
- 12x12 Concrete Slab — slightly larger
- Concrete Slab Cost Guide — 2026 pricing breakdown
- Concrete Thickness Guide — choose the right depth