How Much Concrete for a 16x25 Driveway?
For a 16x25 driveway poured 5 inches thick, plan on about 6.17 cubic yards of concrete. That comes from 400 square feet times 0.417 feet of depth, divided by 27. How much concrete for a 16x25 driveway at other thicknesses is in the table below.
Concrete calculator →The math for a 16x25 driveway
- Area: 16 ft × 25 ft = 400 sq ft.
- Thickness in feet: 5 in ÷ 12 = 0.417 ft.
- Volume: 400 × 0.417 = 166.7 cubic feet.
- Cubic yards: 166.7 ÷ 27 = 6.17 yd³.
- With 10% extra: 6.79 yd³.
The concrete calculator runs the same steps for any size and thickness.
Related: How Much Concrete for a 16x25 Slab?
Concrete for a 16x25 driveway by thickness
| Thickness | Cubic feet | Cubic yards | Yards +10% | 80 lb bags | 60 lb bags |
|---|---|---|---|---|---|
| 4 in | 133.3 | 4.94 | 5.43 | 223 | 297 |
| 5 in | 166.7 | 6.17 | 6.79 | 278 | 371 |
| 6 in | 200.0 | 7.41 | 8.15 | 334 | 445 |
Bag counts assume about 0.60 cubic feet per 80 lb bag and 0.45 per 60 lb bag, rounded up.
Thickness for this job
Residential concrete driveways are usually 4 to 6 inches thick. Five inches is a sensible minimum if a pickup or delivery truck uses it, and 6 inches if heavier vehicles or an RV park on it. The apron at the street often gets the thicker section.
Related: How Much Gravel for a 16x25 Driveway?
Truck or bags?
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 driveway.
Prep before the pour
Under the slab, most residential pours sit on about 4 inches of compacted gravel. The base spreads the load, drains water away and keeps the driveway from cracking as the soil freezes and thaws. Compact the base in thin lifts, and dampen it just before the pour so it does not pull water out of the mix.
Joints and reinforcement
Reinforcement does not stop cracks, but it holds them tight. Wire mesh or rebar set mid-depth on chairs is common for a driveway that carries vehicles; fiber-reinforced mix is an option for light-duty slabs. Joints about 8 feet apart control where cracks form.
Questions people ask
How many yards of concrete for a 16x25 driveway at 4 inches?
About 4.94 cubic yards, or 5.43 with 10 percent extra.
How many yards for a 16x25 driveway at 6 inches?
About 7.41 cubic yards.
How many 80 lb bags for a 16x25 driveway?
About 223 bags at 4 inches thick, before any waste allowance.
How many square feet is a 16x25 driveway?
400 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 14x100 Driveway?
- How Much Concrete for a 16x20 Driveway?
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