What is the density of PLA?

PLA has a density of approximately 1.24 g/cm3. This can vary slightly (1.20-1.27) depending on the exact blend, additives and colorants used.

Why does filament density matter?

Density determines the weight of your prints and the length of filament per spool. It affects flow rate calculations and cost estimates. More dense materials give shorter filament length per kilogram.

How can I measure my filament density at home?

Cut a known length of filament, weigh it precisely, then calculate: density = weight / (cross-sectional area x length). Use digital callipers for diameter and a kitchen scale accurate to 0.1g.

Does colour affect filament density?

Slightly. White filament with titanium dioxide pigment can be 2-5% denser than natural/clear. Carbon fibre or metal-filled filaments are significantly denser.

3DPrintCalcs

Filament Density Calculator — Material Density Lookup

Look up or calculate filament density for common 3D printing materials.

Material

Sample Weight

Sample Length

Diameter

How We Calculate This

Density Lookup

Select a material to see its standard density value. Values are typical industry averages from manufacturer data sheets.

Custom Calculation

Volume = pi x (diameter/2)^2 x length
Density = Weight / Volume

Frequently Asked Questions

Related Calculators

Filament Length Calculator

Calculate the total length of filament on a spool from its weight and diameter.

Filament Weight Calculator

Estimate how much filament a print will use by weight from model volume.

Filament Cost Calculator

Work out the material cost of a print based on filament weight and spool price.

Spool Life Calculator

Estimate how many prints you can get from one spool of filament.

Filament Diameter Calculator

Calculate cross-sectional area and volume per metre for any filament diameter.

Last updated: February 2026

All calculations are estimates. Always verify settings with test prints before committing to final prints.