Stone Weight Calculator

Frequently Asked Questions

How heavy is granite per square foot at 3/4 inch thick?

About 13 lb per square foot. A 25 sq ft kitchen counter weighs roughly 325 lb.

How many tons of gravel in a standard dump truck?

A single-axle dump truck carries 10-12 tons. A tandem-axle carries 13-15 tons. Confirm with your supplier.

Is marble heavier than granite?

They are nearly identical at 155-175 lb/ft³. The difference is negligible for practical purposes.

How heavy is a cubic yard of crushed stone?

About 2,700-3,100 lb (1.35-1.55 short tons) depending on particle size and moisture.

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Estimates for informational purposes only.

Important Disclaimer: Estimates for informational purposes only.

This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.

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How This Calculator Works

Stone weight is calculated by multiplying volume by material density. For a rectangular slab: volume (ft³) = (length_in x width_in x height_in) / 1728. For a cylinder: volume (ft³) = pi x (diameter_in / 2 / 12)^2 x height_in / 12.

Weight in pounds = volume x density (lb/ft³). Short tons = weight / 2000. Kilograms = weight x 0.453592.

These densities are for solid stone. Gravel and crushed stone are bulk densities that account for air voids between particles. Actual density varies with the specific quarry and rock composition.

Material Density Reference

Stone density varies with mineralogy and porosity. Reference values used in this calculator:

Granite: 165-175 lb/ft³. Dense igneous rock. Common for countertops, curbstones, and monument work.

Limestone: 150-175 lb/ft³. Sedimentary rock. Used in building facades, flooring, and crushed aggregate.

Sandstone: 135-155 lb/ft³. Lighter and more porous than granite. Used for landscaping and building cladding.

Marble: 155-170 lb/ft³. Metamorphic limestone. Used for countertops, floors, and sculpture.

Gravel (loose): 95-115 lb/ft³. This is a bulk density including air voids between particles.

Crushed Stone: 95-110 lb/ft³. Bulk density for angular crushed aggregate.

Practical Applications

Stone weight calculations come up in several real-world situations:

Countertop installation: A 3/4-inch granite countertop at 10 sq ft weighs about 85 lb. Know this before attempting to move or reinstall a slab.

Landscape boulder delivery: Estimate how many boulders fit in a truck before ordering. A 12x12x12-inch granite cube weighs about 85 lb; a 24-inch cube weighs about 680 lb.

Structural loading: Calculate dead load from stone cladding, stacked-stone walls, or flagstone patios to verify footing and ledger capacity.

Gravel delivery: A cubic yard of loose gravel weighs about 2,800 lb (1.4 short tons). A standard dump truck carries 10-14 tons.

FAQ

How heavy is a 2-cm granite countertop?

A 2-cm (about 3/4-inch) granite slab weighs about 13 lb per square foot. A standard kitchen counter of 25 square feet weighs roughly 325 lb. A 3-cm (1.25-inch) slab weighs about 19-20 lb per square foot.

How many tons of gravel in a dump truck?

A standard single-axle dump truck carries 10-12 tons. A tandem-axle truck carries 13-15 tons. A triaxle can carry up to 18-20 tons depending on state weight limits. Confirm with your supplier before ordering.

Is marble heavier than granite?

They are very similar in density: both run 155-175 lb/ft³. Granite is typically slightly denser due to its interlocked crystalline structure, but the difference is negligible for most engineering purposes.

How heavy is a cubic yard of crushed stone?

Crushed stone bulk density is about 100-115 lb/ft³. One cubic yard (27 cubic feet) weighs approximately 2,700-3,100 lb, or 1.35-1.55 short tons. The variation depends on particle size, shape, and moisture content.

Stone Weight Calculator

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