This article is about **how many square feet in a yard of concrete** or **how many sq feet does a yard of concrete covers?**

Volume of **ready mix concrete** is measured in cubic yards. If you know the length and width of area and thickness of patio/slab as well. You can calculate that **how much concrete you need for your project?**

**How many square feet in a yard of concrete**?

If you are looking for an answer about **how many sq feet does a cubic yard of concrete covers? **Actually coverage of yardage of concrete depends on the thickness of slab. Simply for 1 inch thick slab, 1 cubic **yard of concrete** covers **324 square feet**. Table below shows the coverage of one cubic yard of concrete for different thickness.

Thickness of slab | Cubic yard concrete coverage in feet |

1″ | 324 sq feet |

2″ | 162 sq feet |

3″ | 108 sq feet |

4″ | 81 sq feet |

5″ | 65 sq feet |

6″ | 54 sq feet |

7″ | 46 sq feet |

8″ | 40 sq feet |

9″ | 36 sq feet |

10″ | 32 sq feet |

11″ | 29 sq feet |

12″ | 27 sq feet |

### One cubic yards of concrete covers:

Following are the square feet area that one cubic yards of concrete covers at certain thickness of slab.

- For
**4 inches**thick slab, 1 yard of concrete covers**81 square feet**. **5 inches**thick slab, 1 yard of concrete covers**65 square feet**.**6 inches**thick slab, 1 yard of concrete covers**54 sq feet**.**7 inches**thick slab, 1 yard of concrete covers**46 square feet**.**8 inches**thick slab, 1 yard of concrete covers**40 sq feet**.**10 inches**thick slab, 1 yard of concrete covers**32 square feet**.**12 inches**thick slab, 1 yard of concrete covers**27 sq feet**.

Read also concrete calculation

### How to calculate square feet cover by yard of concrete?

If you looking concrete calculation in yards or how much **cubic yards of concrete** you need? It is simple mathematics formula, measure your depth of slab/patio. Convert it into foot and divide **27** by that depth (foot), because there’s **27 cubic feet** in **1 cubic yards**.

Ok lets calculate the how many sq feet does a yard of concrete covers?

- Suppose the depth of slab/patio is
**9″**. Convert it into foot**9″/12 = 0.75′**. - Now divide
**27 by 0.75 = 36**sq feet. - This calculation shows that 1 cubic yards of concrete will cover
**36**square feet of**9″**slab.

### How to calculate yards of concrete?

Below we will guide you, how many yards of concrete do you need? From the above discussion and table you may get the depth of patio/slab and how much 1 yard concrete covers. Below we write down the step by step procedure to calculate exactly how much yards of concrete for your project area.

- First of all know the depth/thickness of slab. Let suppose
**5″**=**0.416′**. - Measure the area by length×width =
**12’×12′**=**144 sq ft**. - Divide
**144 ÷ 65 = 2.21**cubic yards of concrete you need. - Add extra 10%-15% = 2.43 yards.

As for 5″ thickness, 1 yard of concrete covers the 65 sq feet, so we divided the area (144) by 65. If there’s 6″ depth we divide area by 54 and 46 for 7″ and so on.

#### How many yards of concrete do i need for a 24x24x4 slab?

To calculate how much concrete do you need for **24’×24′** slab area which is **4″** thick, is a simple maths. As for 4″ thick one cubic yard of concrete covers 81 sq feet, simply divide the area by 81. You will get how much concrete you really need?

- Lets calculate the area
**24’×24’=576**sq feet. - Divide
**576 ÷ 81 = 7.11**cubic yards. - Add 10% extra, total= 7.82
- You need 7.82 cubic yard of concrete for 24×24×4 slab.

#### How many yards of concrete do I need for a 10×10 slab?

Lets calculate how much concrete do you need for 10’×10′ slab, which is 4″ thick.

- Area
**10’×10′ = 100**sq feet. - Divide
**100÷81 = 1.23**square yards. - Add 10% extra, total= 1.35 sq yards
- You need 1.35 square yard of concrete for 10×10 slab.

### How many square feet in a yard of concrete 6 inches thick?

Lets calculate the one cubic yard of concrete coverage area in sq feet for 6 inches thick slab/patio.

- Lets suppose thickness=
**6″**=**0.5′**. - Now divide 27 by 0.5 = 27/0.5 =
**54 square feet**. - One cubic yard of concrete will cover 54 sq feet for 6″ thickness.

### How many square feet in a yard of concrete 4 inches thick?

Lets calculate the one cubic yard of concrete coverage area in sq feet for 4 inches thick slab/patio.

- Lets suppose thickness=
**4″**=**0.33′**. - Now divide 27 by 0.33 = 27/0.33 =
**81 square feet**. - One cubic yard of concrete will cover 81 sq feet for 4″ thickness.