EN한국어
Filament tool
Convert filament length and weight without a lookup chart.
Enter grams or meters, choose an editable material-density preset, and get weight, length, feet, volume and optional material cost.
Filament converter
Convert filament weight and length in either direction
Density presets are editable reference values, not batch certificates. Use the material manufacturer's current technical data when precision matters.
volume = mass ÷ density; length = volume ÷ filament cross-sectional area
How the conversion works
Geometry and density—not a universal meters-per-kilogram number.
Diameter changes cross-sectional area
Length is calculated from the volume of a cylinder. Because area uses the square of radius, a small diameter difference changes the result. Use the nominal diameter for planning and a measured average only when the added precision is justified.
Density depends on the actual formulation
PLA, PETG, ABS, ASA, TPU and nylon presets are editable reference values. Pigments, fillers and fiber reinforcement can change density. Use the spool or material manufacturer's current technical data sheet for a specific product.
Price follows weight
Optional material cost uses calculated grams divided by 1,000 and multiplied by price per kilogram. It does not include support, purge, failed output, machine time or labor.
Visible formula
volume = mass ÷ densitylength = volume ÷ π × (diameter ÷ 2)²All unit conversions are performed before displaying meters and feet. Results are planning estimates because real filament diameter and formulation vary.
Next decision
Know what is left on the spool.
Weigh the loaded spool and compare its usable remainder with the next sliced job.
Open the spool remaining calculator →Calculation contract · reviewed 2026-08-26
See the source of each input, the formula, and the limit of the result.
Your slicer, invoices, energy tariff, and job records are the preferred inputs. Manufacturer documents support settings and specifications. Example defaults are editable assumptions that demonstrate the model—not measured results.
- Preferred input
- Your job records
- Verification
- Visible formula + unit checks
- Defaults
- Editable example assumptions
- Output use
- Planning comparison