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Concrete Calculator

Calculating the required volume of concrete you need to order for your construction project is necessary.

Calculating the required amount of concrete you need to order for your construction project is necessary. There is no point ordering the wrong amount of concrete in today’s economic climate. Product costs are going up, so you don’t need to add to it by ordering too much concrete (or too little).


That’s where the concrete calculator comes in. Conveniently stored on your phone in your pocket, the app allows you to calculate the exact amount of concrete that you need for your next project. You will never stuff up ordering the correct quantity of cement again.


The calculator will allow you to calculate the amount of concrete that you need no matter what concrete project you are working on. It can calculate for concrete slabs, concrete pads, post holes, circular slabs, concrete stairs, curb and gutters, square columns and round columns.


The app allows you to input the correct dimensions, such as diameter, height, length and width. The app also will allow you to input measurements in either the metric or imperial system. Regardless of whether you prefer millimetres and centimetres or feet and inches, our concrete calculator is able to work the way you like to work.

Concrete Slab Calculator

If you are looking to lay a concrete slab, whether it be a path, driveway or other outdoor area, you need to know the total volume of concrete that you will need to complete the project. That is where the concrete calculator comes in. By inputting some information over a couple of easy steps, our calculator will give you the correct volume of concrete you need.

Firstly download the application for the App Store or Google Play Store. Then:

  1. Tap ‘Concrete Quantities’;
  2. Tap ‘Slab’;
  3. Enter your length, width and depth in either millimetres or feet and inches;
  4. Tap ‘calculate’ if you are using imperial measurements;
  5. Hooray - you now have the total required concrete you need for your project in cubic metres or cubic feet, as well as total including a 10% buffer for wastage.

Post Hole Concrete Calculator

If your project requires concrete for your post holes, our calculator is your ‘go to’ tool. It will provide you with all the information and quantities that you need to get your project done the way you want, when you want.

Firstly download the application for the App Store or Google Play Store. Then:

  1. Tap ‘Concrete Quantities’;
  2. Tap ‘Holes’;
  3. Enter your depth, width and number of holes, in either millimetres or feet and inches;
  4. Tap ‘calculate’ if you are using imperial measurements;
  5. Congratulations - you now have the total required concrete you need for your project in cubic metres or cubic feet, as well as total including a 10% buffer for wastage.

Circular Concrete Slabs Calculator

Need a slab, but your project requires it to be circular? Never fear, you don’t need lengthy and time consuming calculations, our app has the perfect calculator tool for you. It has easy to follow steps, so you can get on with getting it done sooner rather than later.

Firstly download the application for the App Store or Google Play Store. Then:

  1. Tap ‘Concrete Quantities’;
  2. Tap ‘Circular Slabs’;
  3. Enter your depth and width, in either millimetres or feet and inches;
  4. Tap ‘calculate’ if you are using imperial measurements;
  5. Congratulations - you now have the total required concrete you need for your project in cubic metres or cubic feet, as well as total including a 10% buffer for wastage.

Concrete Calculator In Action

Frequently Asked Questions

  • How do I calculate a cubic metre of concrete?

    A cubic metre of concrete is 1 metre high x 1 metre wide x 1 metre deep.

  • How do I get the Concrete calculator?

    The app is easily downloadable from the Apple App Store and Google Play Store.

  • How to Calculate How Much Concrete I Need?

    You can calculate the amount of concrete needed by determining the volume of the area you need to fill. This involves multiplying the length by the width by the depth of the area (L × W × D). For circular areas, use the formula πr²h (pi times the radius squared times the height). Remember, measurements for length, width, and depth should all be in the same units.

  • How Do I Calculate Concrete Quantity?

    Similar to the general calculation of concrete needed, calculate the concrete quantity by using the formula for volume: length x width x height (L × W × D). For projects with complex shapes, divide the area into simpler shapes, calculate the volume for each, and add them together.

  • How To Calculate Concrete Volume?

    Concrete volume is calculated by multiplying the area's length by its width and the desired depth. The formula is: Volume = Length × Width × Depth. Ensure consistency in the units you use for these measurements.

  • How to Calculate How Many Cubic Meters of Concrete I Need?

    For projects measured using the metric system, to find out how many cubic meters of concrete you'll need, use the formula: Volume (m³) = Length (m) × Width (m) × Depth (m).

  • How To Calculate Yards of Concrete?

    In the imperial system, particularly in the United States, concrete is often measured in cubic yards. To calculate yards of concrete, first find the volume in cubic feet (Length (ft) × Width (ft) × Depth (ft)) and then divide that number by 27 (since there are 27 cubic feet in a cubic yard).

  • How Many Cubic Yards of Concrete Do I Need?

    After determining the volume in cubic feet using the formula (L × W × D), divide the result by 27 to convert cubic feet to cubic yards.

  • How Many Bags of Concrete Do I Need?

    First, calculate the volume of concrete you need. Next, check the yield on the concrete mix you plan to use. It's usually listed on the package (for example, one 80-pound bag of concrete mix might yield about 0.6 cubic feet of concrete). Divide your total volume by the yield to determine the number of bags required.

  • How Much Concrete Do I Need for Fence Posts?

    To calculate concrete for a fence post, use the formula: Volume = π × r² × Depth, where r is the radius of the post hole. Convert the dimensions to the same unit before calculating. Typically, each post hole will require around 0.1 to 0.15 cubic meters of concrete, but this depends on the size of the hole and the post.

  • How to Calculate the Compressive Strength of Concrete?

    Compressive strength is calculated by dividing the maximum load applied to the concrete before it fractures by the cross-sectional area of the specimen. The formula is: Compressive Strength = Maximum Load / Cross-Sectional Area. Tests for this are usually conducted using specific equipment like a compression test machine.

  • How Many Yards of Concrete in a Truck?

    The capacity of a concrete truck varies depending on the model but typically ranges from about 8 to 14 cubic yards per load, which equates to roughly 6.12 to 10.71 cubic meters in the metric system. When planning large pours, it's crucial to calculate the total volume of concrete you'll need and then determine how many truckloads are necessary based on the truck's capacity. This is essential for efficient scheduling and to ensure that your project proceeds smoothly without unnecessary delays.


    Remember, for both planning and execution, coordination with your concrete supplier is key. They can provide specific details about the capacities of their trucks and help you schedule deliveries to match your project's pace.

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