Building your own concrete slab, patio driveway or walkway is great home advancement and most diy residence handymen are capable of perfect this type of project. All the is required is some knowledge and also the right tools.

You are watching: How many cubic feet does an 80lb bag of concrete make

### Square or Rectangle Concrete Slab

### Circular Concrete Slab

### Concrete (Sonotube) or Column

**Download a cost-free automatic ready-mix, by the yard and also quantities compelled of 60 lb. And 80 lb. Pre-mixed bags - concrete calculator - (you must have Microsoft Excel or various other compatible spreadsheet program)**

### To Download Your complimentary Concrete Calculator - right click - conserve as

**Information ~ above concrete sealers.**

**Information on hand mixing concrete.**

It have to be detailed that cement, is just one of the 4 item that provides up concrete. Concrete is a mixture that cement, aggregate, sand and also water.

### Square or Rectangle Concrete Slab:

**Notes:**Pre-mix concrete comes in bags that are 60 lbs. And also 80 lbs.A 60 lb. Bag offers 0.45 cubic feet of cured concrete.A 80 lb. Bag gives 0.6 cubic feet of cured concrete.If you have concrete yielded it is offered by the yard (which is a cubic yard = 27 cubic feet).

**Following space the recipe to calculate exactly how much concrete you will require for a square or rectangle-shaped shaped pour:**

### Example:

A patio 10' long by 8' large - 6″ thick

10 x 8 x 6 ÷ 12 = 40 cubic feet of concrete

10 x 8 x 6 ÷ 12 = 40 cubic feet the concrete

40 ÷ 0.6 = 67 (66.7) 80 lb. Bags of concrete

40 ÷ 27 = 1.5 cubic yards that concrete

### Circular Concrete Slab:

**Notes:**

**Following room the formulas to calculate just how much concrete you will need for a one slab:**

### Example:

A one 6″ thick where the circle has actually a radius the 5.5' (11' diameter circle)

3.14 x 5.5 x 5.5 x 6 ÷ 12 = 47.5 cubic feet the concrete

47.5 ÷ 0.45 = 106 (105.6) 60 lb bags of concrete

47.5 ÷ 0.6 = 80 (79.2) 80 lb. Bags of concrete

47.5 ÷ 27 = 1.8 cubic yards that concrete

### Concrete Sonotube , column Or ring Footing:

**Notes:**

See more: What Kind Of Dog Is Shaggy Dog, 12 Shaggy Dog Breeds

**Following space the formulas to calculate exactly how much concrete friend will need for a circle, tube or obelisk shaped pour:**

### Example:

A tower 8' high wherein the column has actually a radius that 5″ (10″ diameter tube)

3.14 x 5 x 5 x 96 ÷ 1728 = 4.4 cubic feet that concrete

4.4 ÷ 0.45 = 10 (9.8) 60 lb bags of concrete

4.4 ÷ 0.6 = 8 (7.3) 80 lb. Bags the concrete

4.4 ÷ 27 = 0.16 cubic yards of concrete

### To Download Your totally free Concrete Calculator - ideal click - conserve as

The website is 100% free. If you click on an advertisement or connect we may receive a fees or a commission if you purchase an item.