How Much Concrete for a 12x16 Patio?
How much concrete for a 12x16 patio depends on thickness. The patio covers 12 × 16 = 192 square feet, and at 4 inches thick that is about 2.37 cubic yards, or 2.61 yards with a 10 percent allowance. Mixed from bags, it is roughly 107 bags of 80 lb mix.
Concrete calculator →The math for a 12x16 patio
- Area: 12 ft × 16 ft = 192 sq ft.
- Thickness in feet: 4 in ÷ 12 = 0.333 ft.
- Volume: 192 × 0.333 = 64.0 cubic feet.
- Cubic yards: 64.0 ÷ 27 = 2.37 yd³.
- With 10% extra: 2.61 yd³.
The concrete calculator runs the same steps for any size and thickness.
Related: How Much Gravel for a 12x16 Patio?
Concrete for a 12x16 patio by thickness
| Thickness | Cubic feet | Cubic yards | Yards +10% | 80 lb bags | 60 lb bags |
|---|---|---|---|---|---|
| 4 in | 64.0 | 2.37 | 2.61 | 107 | 143 |
| 5 in | 80.0 | 2.96 | 3.26 | 134 | 178 |
| 6 in | 96.0 | 3.56 | 3.91 | 160 | 214 |
Bag counts assume about 0.60 cubic feet per 80 lb bag and 0.45 per 60 lb bag, rounded up.
Choosing the thickness
Four inches is standard for a patio that sees foot traffic and furniture. Slope it about 1/8 to 1/4 inch per foot away from the house so rain runs off, and go thicker under a hot tub or outdoor kitchen.
Related: How Much Concrete for a 12x16 Slab? Yards and Bags
Placing the order
Concrete is ordered by the cubic yard, and a yard is 27 cubic feet. Ready-mix plants usually sell in quarter- or half-yard steps, so round up to the next step rather than down. Running short in the middle of a pour leaves a cold joint, which is a weak seam in the patio.
Base and forms
Prep matters as much as the yardage. Strip sod and soft soil, compact the subgrade, then add a compacted stone base, commonly about 4 inches. A level, firm base also keeps your thickness even, which keeps the yardage close to the math.
Joints and reinforcement
Plan the joints before the pour. Panels close to square crack less than long, narrow ones, and joint spacing around 12 feet is typical for a 4-inch slab. Cut joints with a groover while the concrete is soft or with a saw within the first day.
Questions people ask
How many yards of concrete for a 12x16 patio at 4 inches?
About 2.37 cubic yards, or 2.61 with 10 percent extra.
How many yards for a 12x16 patio at 6 inches?
About 3.56 cubic yards.
How many 80 lb bags for a 12x16 patio?
About 107 bags at 4 inches thick, before any waste allowance.
How many square feet is a 12x16 patio?
192 square feet.
How many 80 lb bags make a cubic yard?
About 45. Each 80 lb bag yields roughly 0.6 cubic feet, and a cubic yard is 27 cubic feet.
When is bagged concrete practical?
Usually for jobs under about a cubic yard. Beyond that, mixing dozens of bags by hand gets slow and batches may not blend well.
Related guides
- How Much Area Does a Yard of Concrete Cover?
- How Many Bags of Concrete in a Yard? 40, 60, 80 lb
- Gravel Base Under a Concrete Slab: Depth and Tons
- How Many Yards in a Concrete Truck? Mixer Sizes
- Concrete Short Load Fee: What It Is and How to Cut It
- 60 lb vs 80 lb Concrete Bags: Yield, Count, and Cost
- Rebar vs Wire Mesh in a Slab: Which One to Use
- Cost to Pour a Concrete Slab: Per Square Foot
- How Much Concrete for a 12x12 Patio?
- How Much Concrete for a 12x14 Patio?
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