All concrete is estimated in cubic yards. For large concrete jobs—4 cubic yards or more—you can have the concrete delivered by ready-mix truck. You can also haul fresh concrete to your site in special 2-cubic-yard trailers provided by concrete producers. For small- to medium-sized jobs, it’s best to mix your own in a rented concrete mixer. For very small jobs, you can purchase sacks of ready-mix that only require you to add water.

To estimate how much concrete your project requires, enter your project area measurements—rounded to the nearest foot—into our pop-up calculator. We have included a separate calculation area for foundation walls. For stem wall with footing, calculate the footing area and the wall separately and add them together.

Shape	Formula	Calculator inputs
	Multiply length by width.	length, width
	Square the circle’s radius; multiply by 3.1416.	diameter
	Halve the base length; multiply by height. Or, multiply the base length by the height and divide by 2.	base length, height
	Square the short diameter; multiply by .866.	short diameter
	Square the short diameter; multiply by .828.	short diameter
	Draw the project out on graph paper, with 1/4 inch representing 1 foot. Count up the number of squares. Partial squares count as one.	length, width

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