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How the Tonnage Calculator Works

1.

Choose a Mode: Use Basic for a quick estimate (enter area + depth) or Advanced to enter length, width, and depth for more detailed control.

2.

Select Material: Choose from a predefined list of common materials, each with a default unit weight. You can also select "Enter a custom unit weight" to input your own.

3.

Enter Dimensions: Input the dimensions of the area you need to fill. In Advanced mode, you can enter length, width, and depth. In Basic mode, you just enter area and depth. You can use various Imperial and Metric units.

4.

Adjust Unit Weight: If you've selected a custom material, or simply need to fine-tune your calculations, you can adjust the unit weight of the material and choose your preferred unit (e.g., kg/m³, lb/cu ft).

5.

Get Results: The calculator automatically determines the volume and total tonnage required based on your inputs.

Why Builders & DIYers Love Our Tonnage Calculator

"This calculator is a lifesaver for quoting projects. Accurate and easy to use!"

— David, Landscaper

"No more guessing how much gravel I need. The unit weight options are fantastic."

— Sarah, Home Renovator

FAQ

Frequently Asked Questions

The calculator first determines the volume of your area (Length × Width × Depth). It then multiplies that volume by the material's unit weight (density) to find the total weight, which is converted to tons.
The 'unit weight' or density of materials like gravel or soil is not constant. It can change based on its source, moisture content, and how compacted it is. This tool uses average values for estimation.
Unit weight (or density) is how much a certain volume of a material weighs. For example, the weight in pounds for one cubic foot of material (lb/cu ft) or kilograms per cubic meter (kg/m³).
In the United States, a standard ton (or 'short ton') is 2,000 pounds. A metric ton (or 'tonne') is 1,000 kilograms. Be sure to confirm which unit your supplier uses.