Feb 03, · How to calculate concrete: Determine how thick you want the concrete. Measure the length and width that you’d like to cover. Multiply the length by the width to determine square footage. Convert the thickness from inches to feet. Multiply the thickness in feet by the . Calculate How Much Concrete You’ll Need At Lowe’s, we make it easy for our Pros to get the concrete they need quickly and efficiently. Our concrete estimator will calculate how much concrete mix you’ll need for concrete footings — just enter the length, width and depth of the area.

Use our calculator to estimate total volume, total weight and total number of bags of concrete you will need for your project. This assumes concrete density is lbs. This is an estimate. Concrete and cement can get expensive, so it pays to know how much concrete you need for your next masonry project. Enter the ImproveNet concrete calculator. The first step is determining what kind of concrete you will need.

There are many, many kinds of concrete out there. Mixed concrete can be complex, meaning it can be really strong or not. Modern or regular concrete is a mixed design using sand and other common materials that withstand pressure. Some concrete is known as high or ultra-high performance, meaning it can really take any kind of hit.

Talk to a concrete specialist to see which is best for your project. After you pick the material, you will need to figure out exactly how much of it you will need for your concrete project. For large concrete jobs - four cubic yards or more - the concrete should be delivered by a ready-mix truck.

For very small jobs, you can purchase sacks of ready-mix that only require water. Foundation walls and stem walls with footing will require different calculations than anything in how to filter information in excel chart.

Foundation walls will be thicker and therefore, require more concrete to stay strong against a whole house atop them. Calculating these walls will require the length of the footing and wall, height and width of the footing and wall, along with the thickness of the footing and wall. For stem walls, calculate the footing area and the wall and finally, add them together. Get Free Quotes. Home Calculators Concrete Calculator. Concrete Calculator. Concrete Material Calculator Use our calculator to estimate total volume, total weight and total number of bags of concrete you will need for your project.

Step 1: Select Shape Learn more about measuring formulas Rectangle. Irregular Shape. Step 2: Enter Rectangle Measurements Length feet inches yards meters centimeters. Width feet inches yards meters centimeters. Diameter feet inches yards meters centimeters. Height feet inches yards meters centimeters. Side Length how to prepare melon soup inches yards meters centimeters.

Thickness feet inches yards meters centimeters. Your Results:. Your Next Step: Get accurate masonry quotes. It's free! Get Free Masonry Quotes. Tips for Measuring Concrete Concrete and cement can get expensive, so it pays to know how much concrete you need for your next masonry project.

Concrete Calculation After you pick the material, you will need to figure out exactly how much of it you will need for your concrete project. Calculate the volume of the area after determining the shape of the area see the chart below by multiplying in the thickness of the concrete. Square the circle's radius; multiply by 3.

Halve the base length; multiply by height. Or, multiply the base length by the height and divide by 2. Square the length of the side, then multiply by 5.

Divide this number by 2. Multiply the length by width for each rectangle, then add together. Get free estimates for your Concrete project. Get Started. Home Improvement Tips narrow bathrooms how to fix a sliding door bathroom floors hardest wood flooring how much does it cost to maintain a pool kitchen floor ideas inexpensive kitchen remodel types of windows for homes.

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Use this concrete calculator to estimate how much concrete in volume cubic ft, cubic yards, or cubic meters , weight or number of bags you would need for your walls, columns, steps, slabs, footings, etc.

The calculator uses a standard readymix concrete density by default, but allows for a custom one as well. Before using a concrete calculator, it is helpful to understand what concrete is so any estimations you make can be as close to reality as possible. Concrete is a composite material used for all kinds of construction projects, especially where high compressive strength is required. Completely settling in place might take several years, depending on climate and other conditions. Most concretes in construction are lime-based, such as Portland cement concrete or calcium aluminate cement.

Road construction is an exception since in asphalt concrete the cement material is bitumen. Polymer-based concretes are seldom used. Most concrete is embedded with reinforcing materials e. Different concretes may exhibit highly variable density which is an important part of estimating the amount of concrete you need.

For example, Portland cement concrete holds water, but other types of concrete called "Pervious concrete" allow water to pass, making storm drains unnecessary. These two types of conrecte would naturally have vastly different densities.

Our concrete calculator allows you to specify custom concrete density for accurate results. Most builders face the task of calculating or estimating the amount of concrete needed to build a certain structure: a rectangular or round slab, a wall, supporting square and round columns, staircases and curbs and gutters.

The process is as follows:. The final step can be done for a custom mix by calculating the required amounts of gravel, cement and other materials based on the chosen proportions percentages. Scroll down for more on concrete density and redymix versus custom mix concrete. Use our percentage increase calculator for easier calculation. The volume formula for a rectangular or square slab in cubic feet is height ft x width ft x length ft , as seen in the figure below:. The simples use of our tool is as a concrete slab calculator or concrete wall calculator.

For a wall made of concrete the calculation is practically the same: height ft x width ft x length ft. For example, to calculate the volume in cubic meters for a wall with a height of 2m, width of 20cm and length of 4m, you need to multiply 2 x 0. It is no different for a concrete footing, where we again have the familiar formula h x w x l.

A rectangular column is simple to calculate, except in most cases the height will be much greater than the foundation dimensions, so in our concrete calculator we have defaulted to inches for width and length, and feet for the height cm and meters respectively.

If you remember, the volume of a column is its height times the area of its foundation. More complex concrete forms such as curb and gutter and staircases use the same approach, though the calculation is a bit more complex and so a calculator becomes more essential. A staircase is probably the most complex one, since we need to account for the increasing volume of concrete for each subsequent stair, and also the added depth of the platform on the last step.

A calculator like ours is really does a lot of heavy lifting in this case. The volume formula for each particular step is n x step rise x step run x step width , where n is the n-th step.

For step 2, with a rise of 6 inches, run of 6 inches and width of 4 feet, the calculation would be 2 x 0. Note that larger concrete stairs usually have air space beneath them, thus greatly reducing the amount of concrete you need. They usually have a sloping base, and steps on top. This form is more complex and not currently supported by our calculator. It is also referred to "density in place". According to the Portland Cement Association concrete with strength between and psi is considered high-strength [1].

Standard U. Concrete manufacturers often don't specify the density of their concrete mixture directly, but instead give you the bag yield of the material in place. For example, a conventional redymix concrete bag of 80 lbs may be listed as having a yield of approximately 0. With a few simple mathematical transformations we can use this number to arrive at the in place density of the material and complete our calculation of the total mass and number of bags of concrete we would need. If you already know the density and volume you can also use our density calculator to complete the calculations.

Common bag sizes in the U. In Europe the standards are 25 kg and 50 kg bags. All of these are calculated by default in our online tool, depending on your chosen metrics, while you can also specify a custom bag size if you so desire.

Our software uses readymix concrete a. Readymix is pre-mixed concrete to which you only need to add water in proportion as specified by manufacturer. By knowing the pounds or kilograms of concrete you need, you can calculate the amount of cement and other materials you would need for your custom mix. Custom mixing concrete is, however, a complicated matter and we recommend you attempt it only if your knowledge of building and construction materials is on a professional level.

Did you know that concrete was known and heavily used in ancient Rome [2]? Romans were so good at making concrete, that some of it is in perfect condition even today, some 2 millennia later. Rather than eroding, like most modern concrete the material seems to gain strength from the exposure, particularly in the presence of sea water. We are still unable to replicate the concrete of ancient Rome and there are a number of limiting factors which make it a very challenging task.

For example - the lack of suitable volcanic rocks - Romans were fortunate the right materials were on their doorstep, almost literally. Another issue is that the Romans didn't follow a precise mixture, so we'll need years of experimenting to arrive at a good approximation. If you want your building project to stand the test of time, then a good concrete mixture and estimating the amount of concrete you need are solid first steps.

If you'd like to cite this online calculator resource and information as provided on the page, you can use the following citation: Georgiev G. Calculators Converters Randomizers Articles Search. Concrete Calculator Use this concrete calculator to estimate how much concrete in volume cubic ft, cubic yards, or cubic meters , weight or number of bags you would need for your walls, columns, steps, slabs, footings, etc.

Unit system. Imperial feet or inches, lbs. Metric mm, cm or m, kg. Concrete form. Slab width. Slab length. Slab height. Column diameter. Platform depth. Rise height. Run depth. Curb depth. Curb height. Gutter width. Flag thickness. I purchase. In Bags. In Bulk. Bag size. Bag yield. Price per bag. Calculation results Unit volume 0. Share calculator:. Embed this tool! Essential concrete basics for using a concrete calculator Before using a concrete calculator, it is helpful to understand what concrete is so any estimations you make can be as close to reality as possible.

Calculating how much concrete you need Most builders face the task of calculating or estimating the amount of concrete needed to build a certain structure: a rectangular or round slab, a wall, supporting square and round columns, staircases and curbs and gutters.

The process is as follows: Estimate the volume of concrete needed, using geometrical formulas and the construction plans. Learn the required concrete density, or estimate it based on the chosen concrete mix. Multiply the volume by the density in the same units optional Estimate the amount of readymix concrete you would need The final step can be done for a custom mix by calculating the required amounts of gravel, cement and other materials based on the chosen proportions percentages.

Concrete wall calculation For a wall made of concrete the calculation is practically the same: height ft x width ft x length ft.

Concrete column A rectangular column is simple to calculate, except in most cases the height will be much greater than the foundation dimensions, so in our concrete calculator we have defaulted to inches for width and length, and feet for the height cm and meters respectively.

Things get more interesting with a round column: If you remember, the volume of a column is its height times the area of its foundation.

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