Tungsten cubes are famous for feeling far heavier than they look. Pick one up for the first time and your brain simply does not expect that much weight from something so small. The reason is density, and the math behind it is straightforward.

The weight formula

Weight equals volume times density. For a cube, the volume is the side length cubed. Pure tungsten has a density of about 19.25 grams per cubic centimeter, which is roughly 1.7 times denser than lead and about 2.5 times denser than steel. Multiply the cube’s volume by that density and you have its weight.

Example weights

A cube that is 1 centimeter on each side holds 1 cubic centimeter, so it weighs about 19.25 grams. Double the edge to 2 centimeters and the volume grows to 8 cubic centimeters, so the weight jumps to about 154 grams. A 1 inch cube comes out near 315 grams, about 0.69 pounds. Because volume scales with the cube of the edge length, small changes in size make big changes in weight.

Why the density matters

That heft is the whole point. Tungsten cubes work as compact counterweights, balancing and ballast masses, vibration damping blocks, and dense specimen pieces, anywhere you need maximum weight in a minimum footprint. For custom sizes, tolerances, and certified grades, our sister company Tungsten Parts Wyoming machines tungsten cubes powder to part in the USA.

Frequently asked questions

How do you calculate a tungsten cube's weight?

Multiply the volume by the density. For a cube, volume is the side length cubed. Pure tungsten is about 19.25 grams per cubic centimeter, so a cube that is 1 cm on each side weighs about 19.25 grams.

How heavy is a 1 inch tungsten cube?

A 1 inch cube is about 16.4 cubic centimeters. At roughly 19.25 grams per cubic centimeter that is close to 315 grams, or about 0.69 pounds, far heavier than the same cube in steel or lead.

Why are tungsten cubes so heavy?

Tungsten is one of the densest common metals, roughly 1.7 times as dense as lead and about 2.5 times as dense as steel. That density is exactly why tungsten cubes feel surprisingly heavy for their size.