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Filament length and weight calculator

Convert grams, metres and cost using diameter, density and spool price.

🔒 Data stays in your browser

Conversion direction

Weight (g) or length (m)

Filament diameter (mm)

Density (g/cm³)

Spool price

Net spool weight (g)

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Your result will appear here.

Important assumptions

The result is only as accurate as the inputs. Use slicer or G-code estimates and measure average power when possible.

See formulas and limitations

Ad slot after the result

Local calculations, transparent formulas and user-controlled data.

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© 2026 Druk3DTo · Results depend on user inputs and slicer settings.