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How Much Concrete for a 10x10 Patio?

How much concrete for a 10x10 patio depends on thickness. The patio covers 10 × 10 = 100 square feet, and at 4 inches thick that is about 1.23 cubic yards, or 1.36 yards with a 10 percent allowance. Mixed from bags, it is roughly 56 bags of 80 lb mix.

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The math for a 10x10 patio

  1. Area: 10 ft × 10 ft = 100 sq ft.
  2. Thickness in feet: 4 in ÷ 12 = 0.333 ft.
  3. Volume: 100 × 0.333 = 33.3 cubic feet.
  4. Cubic yards: 33.3 ÷ 27 = 1.23 yd³.
  5. With 10% extra: 1.36 yd³.

The concrete calculator runs the same steps for any size and thickness.

Concrete for a 10x10 patio by thickness

ThicknessCubic feetCubic yardsYards +10%80 lb bags60 lb bags
4 in33.31.231.365675
5 in41.71.541.707093
6 in50.01.852.0484112

Bag counts assume about 0.60 cubic feet per 80 lb bag and 0.45 per 60 lb bag, rounded up.

How thick to pour it

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.

Ordering ready-mix

Ready-mix is priced and batched by the cubic yard (27 cubic feet). Plants commonly add a small-load fee when an order is under a set minimum, so ask about it when you call. Ordering a little extra costs far less than a second truck.

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.

Keeping cracks under control

Plan the joints before the pour. Panels close to square crack less than long, narrow ones, and joint spacing around 8 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 10x10 patio at 4 inches?

About 1.23 cubic yards, or 1.36 with 10 percent extra.

How many yards for a 10x10 patio at 6 inches?

About 1.85 cubic yards.

How many 80 lb bags for a 10x10 patio?

About 56 bags at 4 inches thick, before any waste allowance.

How many square feet is a 10x10 patio?

100 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.

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