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 0.2 x 4, which equals 1.6 m 3 (cubic meters).
Full Answer
What is the concrete calculator formula to calculate cubic yards?
The concrete calculator formula to figure cubic yards for a square or rectangle shaped concrete slab is (Length x Width x Thickness) / 27. Convert all numbers to feet before doing the calculation.
Do you need a calculator to calculate concrete forms?
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. For the curb & gutter its just a matter of combining the curb and gutter volume using this formula:
What is the formula for volume of concrete?
For concrete, the formula for volume is as follows: length x width x thickness. To determine how many bags of concrete you will need, divide the total cubic yards needed by the yield.
How do you calculate the cubic feet of a concrete step?
1st calculate cubic feet for each step. In the example above the first step is: Platform depth = 3' x (Rise height) .66 x 3 (total steps) x 6 (step width) = 35.64 ft³ for platform When you use a formula to calculate concrete yardage for curb and gutter, it's very similar to steps.
Example Calculations
How do you calculate cubic meter of concrete?
Multiply the width, length and depth of your area. Concrete is usually ordered in cubic metres. Here's a conversion guide. There are 1.3 cubic yards in one cubic metre (If you have your requirement in cubic yards, all you need to do is divide by 1.3 to get the cubic metres answer).
How do I calculate how much concrete I need for a slab?
For concrete, the formula for volume is as follows: length x width x thickness....Here's what the math looks like for a 10' by 10' concrete patio:10 x 10 = 100 square feet.4 ÷ 12 = .33.100 x .33 = 33 cubic feet.33 x .037 = 1.22 cubic yards.
How much concrete do I need calculator?
How do I calculate how much concrete I need for a slab?Measure the area in feet.Multiply length by width, and then by thickness.Divide the resulting number by 27 to find cubic yards.
What is the formula for calculating concrete?
Use the formula. Calculating the volume for concrete requires using three dimensions: length times width (which is area) times the height (thickness) or L x W x H. If you are using feet as your standard unit of measurement, this formula will give you the volume of concrete in cubic feet.
What is the formula of volume?
Perimeter, Area, and VolumeTable 3. Volume FormulasShapeFormulaVariablesCubeV=s3s is the length of the side.Right Rectangular PrismV=LWHL is the length, W is the width and H is the height.Prism or CylinderV=AhA is the area of the base, h is the height.2 more rows
How do you calculate volume?
To find the volume of a box, simply multiply length, width, and height — and you're good to go! For example, if a box is 5×7×2 cm, then the volume of a box is 70 cubic centimeters.
How do you calculate materials for M20 concrete?
The prescribed Nominal Concrete Mix Ratio of M20 grade concrete is 1:1.5:3.Cement = 1 Part.Sand = 1.5 Part.Aggregate = 3 Part.Total dry volume of ingredients required = 1.57 cu.m.
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 10x10 slab?
At 4″ thick, for a 10×10 slab, generally, you will need 1.23 cubic yards or 33 cubic feet or either 74- 60lb or 56-80lb bags of premixed concrete.
How many bags of cement are used in M20 concrete?
8 bag8 bag of Cement is required for 1cum of concrete work in M20.
How many bags of cement are there in 1 cubic meter of sand?
Total cement required = 1/5.5 x 1.57 =0.285 cum =0.285/0.0348 = 8.20 bags of cement.
How many square meters cube concrete?
One cubic meter is equal to one square meter....Cubic Meter to Square Meter.Cubic Meter (m3)Square Meter (m2)1121.587432.080142.51986 more rows
Concrete Calculator – Square Footage Area
Our concrete calculator provides you an easy way to calculate concrete volume and estimated cost of concrete slabs, footers, walls, columns, steps, stairs, curbs and gutters in cubic feet, cubic yards, and cubic meters and inches. It makes your construction project planning and budgeting more accurate.
Concrete Calculator | Good Calculators
Use our concrete calculator to accurately estimate both the volume and weight of concrete that you will need to fill a specific area based on its shape and size
Concrete Slabs Calculator - Lowe’s Home Improvement
Use our Concrete Slabs Calculator or Estimator as a guide for how much concrete mix you need for your project.
What is concrete mixed into?
Alternatively, in some factory settings, concrete is mixed into dryer forms to manufacture precast concrete products such as concrete walls. The process of concrete hardening once it has been placed is called curing, and is a slow process.
Why is concrete mixing important?
Proper mixing is essential for the production of strong , uniform concrete. It involves mixing water, aggregate, cement, and any desired additives. Production of concrete is time-sensitive, and the concrete must be placed before it hardens since it is usually prepared as a viscous fluid.
What is cement used for?
Cement is a substance that is used to bind materials, such as aggregate, by adhering to said materials, then hardening over time . While there are many types of cement, Portland cement is the most commonly used cement, and is an ingredient in concrete, mortar, and plasters.
Is concrete time sensitive?
Production of concrete is time-sensitive, and the concrete must be placed before it hardens since it is usually prepared as a viscous fluid. Some concretes are even designed to harden more quickly for applications that require rapid set time.
Concrete calculator formula
Using the measurements provided, our calculator first works out the volume of the required concrete mix using the formulae given below.
Example calculations
Before we begin please note: The number of bags required must be rounded up, otherwise you’ll be left without sufficient concrete.
How does concrete form?
Water: This is the catalyst that creates the reaction. Concrete forms from a complex reaction that starts when water mixes with cement. The two create a gelatinous mass that suspends any material mixed into them. After 3 or 4 hours, the gel releases microscopic tendrils from each grain of cement.
Who invented concrete?
In 1850, Francois Coignet pioneered the use of concrete in residential buildings. The French industrialist also used exterior steel rods to help support concrete walls. These were precursors to reinforced concrete. In 1854, William B. Wilkinson ordered the construction of a concrete servant’s cottage.
What is concrete made of?
To the untrained eye, a piece of broken concrete resembles stone. This is no coincidence. The raw material for concrete comes from sedimentary rocks. Closer inspection will reveal its true nature as a composite material. To create concrete, builders must mix five essential ingredients: 1 Binding mixture (cement): This is a reactive substance that solidifies when mixed with water. The resulting slurry hardens and traps the remaining ingredients together, creating concrete. Today, the binding mixture of choice is Portland cement. Other available materials for binding include lime and volcanic ash. 2 Coarse aggregate: These are large lumps that add volume and weight to the concrete mixture. The most common aggregates include crushed stones and gravel. 3 Fine aggregate: These are fine-grained substances like sand that add bulk to the finished concrete. Taken together, coarse and fine aggregates make up the bulk of the concrete’s mass at up to 70 percent. 4 Air: Concrete must have air pockets in them to ease expansion and contraction. 5 Water: This is the catalyst that creates the reaction.
Why is Portland cement hard?
It is not evaporation that makes concrete hard. As Portland cement reacts to the presence of water, it creates a layer of tricalcium silicate. This layer forms fast and prevents the concrete from getting too moist. To ensure the strongest concrete, builders must use the right amount of water. Sometimes, builders must avoid putting too much water onto the concrete. Other times, engineers must keep setting concrete wet through a process called curing.
How long does it take for cement to harden?
After 3 or 4 hours, the gel releases microscopic tendrils from each grain of cement. These tendrils enmesh any particles of aggregate suspended between them. Over the course of several days, the tendrils harden, locking the mixture in place. Once the process completes, the concrete sets.
What is the basic cement?
Basic cement grades consist only of ground clinker and little else . Other additives are mixed into the resulting power, creating other grades of cement. The production of clinker produces a lot of pollution in the form of carbon dioxide (CO2). The other substance of choice for cement is hydraulic lime.
What are the ingredients in Portland cement?
These include limestone and chalk. Other materials mixed in include clay, and rocks like shale and slate. The ingredients are crushed and mixed together. The ingredients are then heated and churned in a kiln, when gypsum is added.
Concrete calculator formula for floors and slabs
This is how you use a formula to calculate concrete for a square concrete slab or a rectangular shaped floor or slab.
concrete calculator formula for a round slab
The formula to calculate concrete yardage for a round slab is very different than the formula for a square slab. Square footage is calculated using Pi and the diameter of the circle to help determine cubic yardage.
calculator formula for a concrete wall
Calculating concrete yardage for a wall uses the same formula as a slab.
Formula to calculate concrete for a footer
Calculating concrete yardage for a footing is done much like a slab, you just usually have smaller units of measurement for width.
Concrete calculator formula for a square column
Calculating concrete for a square column first starts with calculating the cubic feet of the column.
Formula to calculate concrete for a round column
The formula to calculate concrete yardage for a round column is just like the round slab formula above. The difference is a column's height is usually much greater than a slab.
How to calculate concrete for steps
This is how you calculate concrete yardage for a set of concrete steps.
Should I order concrete by the yard from a ready mix company or just use bags?
Larger jobs such as driveways are easier to complete when ordering concrete by the yard, rather than trying to mix bag after bag by hand. For smaller jobs, like a walkway, modest patio or footings, you should calculate the number of concrete bags instead.
Calculating the amount of concrete needed for slabs (including odd shapes)
Rule of thumb: add 1 / 4 " to the thickness of your slab for your slab concrete budget. This assumes you have the job evenly graded to the right depth, and the grade is well compacted.
Calculating the amount of concrete needed for footings
Footings will rarely follow the drawing exactly. In rocky soil the footings may collapse when big rocks are excavated
Estimating concrete steps
Steps seem tricky to calculate but are not. If there are three steps leading up to a porch:
Calculating the amount of base fill
Granite Construction has an excellent base fill calculator on their site. Use this to figure how much material you need for the subgrade.
Requesting your ready mix supplier to visit your site
After you have chosen a Ready Mix Supplier, have a representative come to your site to give his/her opinion on the quantity required. Compare the figure with what you came up with. Discuss any variances with the supplier.
What Is CBM?
The full form of CBM is Cubic Meters. It represents the volume values in cubic metric units. Generally, these are used in container shipment-related activities. With the help of such calculations, the users can figure out how much space or containers they really want to get their products shipped completely.
How To Calculate CBM For Shipping?
CBM calculation is an important part of the shipment process. It is the only way that can help you figure out and estimate the shipment cost. You can calculate CBM by using a simple formula.
What Does Volumetric Weight Mean?
Most commonly, people consider total weight as the chargeable one. In the case of shipment, the chargeable weight is calculated with volumetric weight formulas. When you do the calculations, you can find a big difference in both results. Here, you can understand what volumetric weight is and how it is different from the total weight.
Why Do You Need CBM Calculator?
Many people don’t understand the importance of online sources to calculate CBM for shipping. According to them, it can be done manually by using basic resources. In reality, the exports have to deal with multiple calculations when it comes to getting all stats or data about a shipment.
What is concrete mixed into?
Alternatively, in some factory settings, concrete is mixed into dryer forms to manufacture precast concrete products such as concrete walls. The process of concrete hardening once it has been placed is called curing, and is a slow process.
Why is concrete mixing important?
Proper mixing is essential for the production of strong , uniform concrete. It involves mixing water, aggregate, cement, and any desired additives. Production of concrete is time-sensitive, and the concrete must be placed before it hardens since it is usually prepared as a viscous fluid.
What is cement used for?
Cement is a substance that is used to bind materials, such as aggregate, by adhering to said materials, then hardening over time . While there are many types of cement, Portland cement is the most commonly used cement, and is an ingredient in concrete, mortar, and plasters.
Is concrete time sensitive?
Production of concrete is time-sensitive, and the concrete must be placed before it hardens since it is usually prepared as a viscous fluid. Some concretes are even designed to harden more quickly for applications that require rapid set time.
Concrete Calculator Formula
But What Happens If I’m Measuring in Different units?
- It’s likely that you are wondering what to do if your units aren’t in feet and pounds. Well, the solution couldn’t be easier! Our calculator can do all the conversions for you, meaning you don’t have to. For each measurement of length, you are able to work in metric units (feet, yards, inches) or imperial units(centimeters, meters). Weight can be given in pounds (lb), US short tons (t), imp…
Example Calculations
- Before we begin please note: The number of bags required must be rounded up, otherwise you’ll be left without sufficient concrete. You’ll notice that we do this with all our examples (but the calculator does this for you!).