Reference
3D printing material density chart
Density is the only number you need to turn a volume into a weight. Here is every material this site knows, with the data sheet it came from.
| Material | Density (g/cm³) | 1 m weighs | 1 kg holds | Price / kg | Sampled range | Source |
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How to use a density
Weight = volume × density. A 120 cm³ model in PLA at 1.24 g/cm³ weighs 148.8 g; the same model in ABS at 1.04 g/cm³ weighs 124.8 g. That 16% difference is money on every print, which is why “PLA is about 1.25” is not good enough when you are quoting.
For the reverse direction — how many metres is that weight of filament — the length to weight converter does the cylinder maths.
Why the price column shows a range
The kg price is the mid-point of three retail listings sampled on the date shown; the range column gives the cheapest and dearest of those listings. Filament of the same polymer varies by more than half between a budget brand and a premium one, which moves a quote far more than density ever will.
Density is not one number
Pigments, glass fibre, wood flour and impact modifiers all shift density by a few percent even within one product family. The value used by the calculators is the one published in the data sheet named in the source column. If a margin depends on the third decimal of a density, weigh ten metres of your own spool.
Resin
Standard photopolymer resin sits around 1.10 g/cm³. Three resins are listed here and used by the resin calculator.