How Heavy Is a Tungsten Cube?
Tungsten has a density of 19.3 grams per cubic centimeter — nearly twice that of lead, and nearly identical to gold. This makes the weight of a tungsten cube startlingly counterintuitive. Below is everything you need to know: weight by size, a live calculator, and a comparison to common materials.
A 1.5-inch tungsten cube weighs approximately 1 kilogram (2.2 lbs). A 1-inch tungsten cube weighs approximately 316 grams (0.70 lbs). Weight scales with the cube of the side length — doubling the size multiplies the weight by eight.
Tungsten Cube Weight Table
All weights calculated at tungsten’s standard density of 19.3 g/cm³. Weight increases with the cube of the side length — so a cube twice as large is eight times heavier.
| Size | Side (mm) | Volume (cm³) | Weight (grams) | Weight (kg) | Weight (lbs) | Notes |
|---|---|---|---|---|---|---|
| ½ inch | 12.7 mm | 2.05 | 39.5 g | 0.040 kg | 0.087 lbs | Coin-sized |
| 1 inch | 25.4 mm | 16.39 | 316 g | 0.316 kg | 0.70 lbs | Golf ball–sized |
| 1.5 inch Our Cube | 38.1 mm | 55.31 | ~1,067 g | ~1.07 kg | ~2.35 lbs | Marketed as the 1KG cube |
| 2 inch | 50.8 mm | 131.1 | 2,530 g | 2.53 kg | 5.57 lbs | Softball-sized |
| 3 inch | 76.2 mm | 442.4 | 8,538 g | 8.54 kg | 18.8 lbs | Can’t hold one-handed |
| 6 inch | 152.4 mm | 3,541 | 68,341 g | 68.3 kg | 150.6 lbs | Heavier than most people |
| 1 foot | 304.8 mm | 28,317 | 546,518 g | 546.5 kg | 1,205 lbs | Over half a metric ton |
* Weights calculated at 19.3 g/cm³ (tungsten’s standard density at room temperature). Actual product weight may vary ±2% due to material density variation and machining tolerances. The 1.5-inch cube is commonly marketed as “1KG” — its theoretical weight is approximately 1.07 kg.
Tungsten Cube Weight Calculator
Enter any side length to calculate the weight of a tungsten cube at 19.3 g/cm³. The formula is simple: weight = side³ × 19.3 (where side is in centimeters and weight is in grams).
This is also why a tungsten cube feels so much heavier than it looks — density scales linearly, but volume (and therefore weight) scales with the cube of the dimension. A cube twice as wide is eight times heavier.
Calculated at 19.3 g/cm³ (standard tungsten density)
Tungsten vs. Other Materials
Tungsten sits at 19.3 g/cm³ — nearly twice the density of lead, and in the same range as osmium and iridium, the two densest known elements. For practical purposes, the only common metal that matches it is gold, which sits at 19.32 g/cm³.
This is why a tungsten cube occupies such a unique position: it is available, affordable, and safe — unlike osmium, which is radioactively adjacent and astronomically expensive. Gold at the same weight would cost tens of thousands of dollars. Tungsten gives you the same density experience for a fraction of the price.
Pick up a 1.5-inch tungsten cube and your brain receives information it has no frame of reference for. Something this size should weigh a few hundred grams. Instead it weighs a kilogram. That gap between expectation and reality is the entire appeal of the object.
Full comparison: tungsten vs. gold, osmium, titanium →| Material | Density | 1.5″ Cube Weight | vs. Tungsten |
|---|---|---|---|
| Tungsten | 19.3 g/cm³ | ~1.07 kg | — |
| Gold | 19.32 g/cm³ | ~1.07 kg | ≈ same |
| Lead | 11.34 g/cm³ | ~627 g | 0.59× |
| Copper | 8.96 g/cm³ | ~495 g | 0.46× |
| Iron | 7.87 g/cm³ | ~435 g | 0.41× |
| Aluminum | 2.70 g/cm³ | ~149 g | 0.14× |
Common Questions About Tungsten Cube Weight
Now you know how heavy it is.
Hold one for yourself.
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