Your bones are mostly calcium phosphate, which is surprisingly tough and doesn’t burn easily. After the fire, what’s left are the brittle, white-gray fragments of your skeleton—often still recognizable as ribs, a jawbone, or a skull. It’s not ash yet; it’s more like bone rubble.
Here’s the cool part: the amount of bone left is roughly 2% to 4% of the original body weight. For a 150-pound person, that’s about three to six pounds of material. So yes, you do not become a tiny urn of dust; you become a concentrated heap of calcined bone chips.
What about the “ashes” in the urn?
Those bone fragments get processed in a machine called a cremulator, which pulverizes them into a fine, consistent powder. That’s what you see in the urn—not ash from your flesh, but ground-up bone. It’s remarkably similar in texture to coarse sand or fine gravel.
Fun comparison: if you cremated a large Thanksgiving turkey, you’d get maybe a cup of bone dust. For a human, it’s a whole lot more—usually between 3 and 9 pounds of material, depending on bone density. Men tend to have denser bones than women, so their remains are a bit heavier.
The Complete Guide to Cremation Tray Options – MyMortuaryCooler.com
