How do I calculate concrete yardage?

Multiply length in feet by width in feet by thickness in feet, then divide by 27 to convert cubic feet to cubic yards. For a 4 inch slab the thickness in feet is 0.333. A 20 ft x 10 ft slab at 6 inches is 100 cubic feet, which is 3.70 cubic yards.

How many cubic feet are in a cubic yard of concrete?

Twenty seven. A cubic yard is 3 ft x 3 ft x 3 ft. That factor is why thickness must be converted from inches to feet before dividing, otherwise the yardage comes out twelve times too high.

How many cubic yards is a cubic metre of concrete?

One cubic metre equals 1.31 cubic yards, and one cubic yard equals 0.765 cubic metres. The calculator shows both units at once so you can compare a metric quote against a yardage quote directly.

Should I round my concrete order up?

Yes. Suppliers usually sell in quarter yard increments, so round up to the next quarter yard after adding waste. A short second delivery carries a part load fee that costs far more than the extra concrete would have.

What is a short load fee?

A surcharge ready mix suppliers apply when an order is below their minimum load, often around 1 cubic yard in the US. It is the main reason small pours are cheaper with bags and large pours are cheaper with ready mix.

Concrete Yardage Calculator

About Concrete Yardage Calculator

Concrete Yardage Calculator gives the volume of a pour in cubic yards, the unit US ready mix suppliers price and deliver in. Enter length and width in feet and thickness in inches, and the calculator converts to cubic yards along with cubic feet, cubic metres and bag counts. The underlying conversion is that one cubic yard equals 27 cubic feet or 0.765 cubic metres, so a slab measured in feet and inches has to be divided by 27 to become yardage: a 20 ft x 10 ft slab at 6 inches is 100 cubic feet, which is 3.70 cubic yards, or 4.07 cubic yards once a 10 percent waste allowance is added. The most common mistake in yardage calculations is leaving thickness in inches instead of converting it to feet, which inflates the answer twelve fold, and the calculator handles that conversion for you. Suppliers typically sell in quarter yard increments and charge a short load fee below a set minimum, so round your final yardage up to the next quarter yard when placing the order.

How to use Concrete Yardage Calculator

Choose metric or imperial input
Enter length, width, and depth of your slab
See volume and bag count in both metric and imperial instantly

Frequently Asked Questions

How do I calculate concrete yardage?: Multiply length in feet by width in feet by thickness in feet, then divide by 27 to convert cubic feet to cubic yards. For a 4 inch slab the thickness in feet is 0.333. A 20 ft x 10 ft slab at 6 inches is 100 cubic feet, which is 3.70 cubic yards.
How many cubic feet are in a cubic yard of concrete?: Twenty seven. A cubic yard is 3 ft x 3 ft x 3 ft. That factor is why thickness must be converted from inches to feet before dividing, otherwise the yardage comes out twelve times too high.
How many cubic yards is a cubic metre of concrete?: One cubic metre equals 1.31 cubic yards, and one cubic yard equals 0.765 cubic metres. The calculator shows both units at once so you can compare a metric quote against a yardage quote directly.
Should I round my concrete order up?: Yes. Suppliers usually sell in quarter yard increments, so round up to the next quarter yard after adding waste. A short second delivery carries a part load fee that costs far more than the extra concrete would have.
What is a short load fee?: A surcharge ready mix suppliers apply when an order is below their minimum load, often around 1 cubic yard in the US. It is the main reason small pours are cheaper with bags and large pours are cheaper with ready mix.

Concrete Yardage Calculator

About Concrete Yardage Calculator

How to use Concrete Yardage Calculator

Frequently Asked Questions

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