# How do I calculate how much concrete I need?

## How do I calculate how much concrete I need?

How to calculate concrete:

1. Determine how thick you want the concrete.
2. Measure the length and width that you’d like to cover.
3. Multiply the length by the width to determine square footage.
4. Convert the thickness from inches to feet.
5. Multiply the thickness in feet by the square footage to determine cubic feet.

## How do you calculate cubic meter area?

CBM Calculation Formula

1. Length (in meter) X Width (in meter) X Height (in meter) = Cubic meter (m3)
2. We can define dimensions in Meter, Centimeter, Inch, Feet.

## How many 20kg bags of cement makes a cubic metre of concrete?

There are 110 bags of 20kg of concrete in a cubic metre. 1 cubic metre of concrete weighs 2200kg, so, number of bags of 20kg of concrete in a cubic metre = 2200 ÷ 20 = 110 bags. So, approximately there are 110 bags of 20kg of concrete in a cubic metre.

## How much concrete do I need for a 3×3 slab?

How much concrete do i need for a 3×3 slab. At 4″ thick, for a 3×3 slab, generally, you will need 0.11 cubic yards or 2.97 cubic feet or either 7- 60 lb or 5- 80 lb or 10- 40 pound bags of premixed concrete. Always you should purchase 5 to 10% more premixed than required.

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