Gravel Calculator

Our gravel calculator is a very simple tool that helps you estimate the correct amount of gravel quantity for your specific project. These projects might include covering a driveway, making a path, or landscaping.

You just need to enter the dimensions of the area into the tool and the tool tells you how much gravel you need to purchase. This way, you can safely order your gravel without under or over-buying the gravel, and as a result, you will save your money.

Why Use Our Calculator?

Get Accurate Results
With our calculator, you can quickly determine how much gravel you need based on the shape and size of your area.

Choose from 3 Calculation Methods
Depending on the shape of your area, you can select from three convenient calculation options: Total Area, Rectangular, or Circular.

Save Money & Avoid Waste
You don’t need to make any guesses now, you can calculate the right amount of material needed for your project. This way, you can avoid wasting extra money.

How to Use This Gravel Calculator?

Simply select one surface area from the given three options as per your needs:

1st: Total Area
If you have an irregular or complex area to cover, use this option. It allows you to calculate the total area and determine the required gravel based on the space you need to cover.

How It Works:

Enter the total area to be filled
Enter the depth
Choose a density, such as dry sand

The calculator will figure out the amount of gravel based on your input.

2nd: Rectangular Area
This option is best when your area is rectangular or square in shape. Examples of this area are driveways, patios, or pathways.

How It Works:

Enter the length and width of your rectangular space.
Enter the depth of gravel.
Choose the density

The calculator will give you the total volume and weight of gravel to cover that area.

3rd: Circular Area
The circular area includes spaces like garden circles, round paths, or circular driveways.

How It Works:

Enter the diameter (distance across the circle from one edge to the opposite edge of the circle)
Enter the depth of gravel.
Select the density

The calculator will then show you the accurate amount of gravel needed.

How to Calculate Gravel for Your Project Manually?

When it comes to instant and accurate results, a gravel calculator is the best option. But if you want to calculate the gravel on your own, we have provided the methods below with easy examples. So that you can follow them to calculate the gravel quantity:

1. Calculate Gravel for Total Area

Let’s say you have these measurements for your total surface area:

Total Area = 200 Square Meter

Depth of Gravel = 3 CM

Gravel Density = 104.88 lbs/ft³

Formula

Volume of Gravel = Total Area × Depth

Step 1: First of all, you have to convert the depth of gravel from CM to Meter. To do this, you need to divide 3 by 100. Because there are 100 centimeters (cm) in 1 meter (m), so:

3 CM = 0.03 M

Step 2: Let’s put all the values into the above formula:

Volume of gravel = 200 × 0.03
Volume of gravel = 6 m³ cubic meters

Step 3: Your next step is to convert cubic meters to cubic feet. For this conversion, use this formula:

Formula

Volume in ft³ = Volume in m³ × 35.3147

Add the values into the equation:

Volume in ft³ = 6 × 35.3147
Volume in ft³ = 211.8882 cubic feet

Step 4: Your final step is to calculate the weight of the gravel:

Formula

Weight = Volume in ft³ × Density

Add the values into the formula:

Weight = 211.8882 x 104.88 lbs/ft³
Weight = 22223 lbs

2. Calculate Gravel for a Rectangular Area

Let’s say you need to calculate how much gravel is required for a rectangular area with the following dimensions:

Length = 20 meters
Width = 15 meters
Depth of Gravel = 3 cm
Gravel Density = 104.88 lbs/ft³

Step 1: Convert Depth from Centimeters to Meters

The depth of gravel is given as 3 cm, but you need it in meters to match the other dimensions (length and width).

To convert centimeters to meters, you need to divide by 100.

So:

3 cm = 0.03 meters
(Reason: 1 meter = 100 centimeters, so 3 cm ÷ 100 = 0.03 meters).

Step 2: Calculate the Volume

Now, that you have the dimensions in meters, we can calculate the volume of gravel required for the area.

Formula

Volume = Length × Width × Depth

Now add the values:

Volume = 20 m × 15 m × 0.03 m
Volume = 9 m³

So, the volume of gravel needed is 9 cubic meters.

Step 3: Convert Cubic Meters to Cubic Feet

Because many suppliers use cubic feet units to measure the gravel, so you need to convert the volume from cubic meters to cubic feet.

We use the conversion factor:

1 cubic meter = 35.3147 cubic feet

So:

Volume in Cubic Feet = 9 m³ × 35.3147
Volume in Cubic Feet = 317.8323 ft³

Therefore, the volume is 317.8323 cubic feet.

Step 4: Calculate the Weight of the Gravel

Next, you need to calculate the weight of the gravel by using its density.

Formula

Weight = Volume ft³ × Density

Adding the values:

Weight = 317.8323 ft³ × 104.88 lbs/ft³
Weight = 33,334 lbs

So, the weight of the gravel is 33,334 pounds (lbs).

Step 5: Convert Pounds to US Tons

To convert from pounds to US tons, we use the conversion factor:

1 pound = 0.0005 US tons

So:

Weight in US Tons = 33,334 lbs × 0.0005
Weight in US Tons = 16.667 US tons

Thus, the weight of the gravel is 16.667 US tons.

Here’s the complete article following the same pattern as before:

3. Calculate Gravel for a Circular Area

We are given the following dimensions:

Diameter = 60 meters
Height/Depth = 6 inches
Density = 50 kg/m³

Step 1: Convert Depth from Inches to Meters

The depth of gravel is given in inches, but we need it in meters.
We use the conversion factor:

1 Inch = 0.0254 meters

So:

Depth in Meters = 6 x 0.0254

Depth in Meters = 0.1524 m

Now, the depth is 0.1524 meters.

Step 2: Calculate the Radius (r)

To calculate the volume:

Radius = Diameter/2 = 60/2 = 30 m

Now, the radius is 30 meters.

Step 3: Calculate the Volume of Gravel

The formula for the volume of a circular area is:

V = π × r² × h

Where:

π ≈ 3.14159265359
r = 30 m
h =0.1524 m

V = 3.14159265359 x (30)² x 0.1524

V = 3.14159265359 x 900 x 0.1524

V = 430.90 m³

So, the volume of gravel required is 430.90 cubic meters.

Step 4: Calculate the Weight of the Gravel

Using the formula:

Weight = Volume x Density

Weight = 430.90 x 50

Weight = 21,545.04 kg

So, the weight of the gravel is 21,545.04 kg.

Step 5: Convert Kilograms to US Tons

To convert from KG to US tons,

1 kg = 0.00110231 US tons

Weight in US Tons = 21,545.04 x 0.00110231

Weight in US Tons = 23.75 US tons

So, the weight of the gravel is 23.75 US tons.

Step 6: Convert Kilograms to Pounds (lbs)

To convert from kg to lbs:

1 kg = 2.20462 lbs

Weight in Pounds = 21,545.04 x 2.20462

Weight in Pounds = 47,498.63 lbs

So, the weight of the gravel is 47,498.63 lbs.

Final Answer:

Volume of Gravel = 430.90 m³
Weight in Kilograms = 21,545.04 kg
Weight in US Tons = 23.75 US tons
Weight in Pounds = 47,498.63 lbs