Stone Calculator
Calculate the weight, volume, and cost of stone for construction projects. Free online stone calculator supporting rectangular and circular shapes with multiple stone types.
What Is a Stone Calculator?
A stone calculator is a free online tool that estimates the weight, volume, and cost of natural stone and concrete materials. Whether you are working with granite countertops, marble slabs, limestone blocks, sandstone pavers, crushed stone for landscaping, or gravel concrete, this calculator provides precise measurements for your project planning.
How to Use the Stone Calculator
Using this stone weight calculator is simple:
- Select material type – Choose from granite, marble, limestone, sandstone, crushed stone, gravel concrete, or enter a custom density.
- Choose the shape – Select rectangle or circle based on your stone piece.
- Enter dimensions – For rectangles: length, width, and thickness. For circles: diameter and thickness.
- Specify quantity – Enter the number of identical stone pieces.
- Set pricing – Choose between price per kg or price per m³ and enter the rate to get total cost.
Results update in real-time showing weight per stone, total weight, volume, and total cost.
Stone Weight Calculation Formula
The weight of stone is calculated using:
$$W = \rho \times V$$
Where $\rho$ is the material density and $V$ is the volume. Volume depends on the shape:
- Rectangle: $V = L \times W \times T$
- Circle: $V = \pi \times (d/2)^2 \times T$
For other stone and landscaping material calculations, try the Limestone Calculator or the Crushed Stone Calculator. For general weight calculations, use the Mass Calculator.
Stone Density Reference
| Material | Density (kg/m³) |
|---|---|
| Granite | 2,700 |
| Marble | 2,600 |
| Limestone | 2,500 |
| Sandstone | 2,200 |
| Crushed stone | 1,600 |
| Gravel concrete | 2,400 |
Frequently Asked Questions
How much does a granite slab weigh?
A typical granite slab (2 cm thick, 2.6 m² area) weighs approximately 140 kg (310 lb). Use the calculator with Granite selected for precise results based on your dimensions.
What is the density of marble?
Marble has a density of approximately 2,600 kg/m³. It is slightly less dense than granite (2,700 kg/m³), making it a lighter stone for countertops and flooring.
How do I calculate the weight of crushed stone for landscaping?
Measure the area (length × width) and desired depth. Use the circle or rectangle shape options, set units to your preference, select "Crushed stone" material, and enter dimensions. The calculator will give you the total weight and volume needed.
Can I calculate cost per cubic meter instead of per kg?
Yes. The calculator has a "Price basis" option where you can switch between price per kg and price per m³. This is useful when buying stone by volume (e.g., crushed stone or gravel).
What is the difference between limestone and sandstone density?
Limestone has a density of about 2,500 kg/m³, while sandstone is less dense at approximately 2,200 kg/m³. This means sandstone is about 12% lighter than limestone for the same volume.
How accurate are stone weight calculations?
Natural stone can have slight density variations due to its composition and porosity. Our calculator uses standard average densities for each material type. For critical applications, verify with a sample measurement.