Filament Diameter Calculator — Cross-Section & Volume
Calculate cross-sectional area and volume per metre for any filament diameter.
Standard sizes are 1.75mm and 2.85mm
How We Calculate This
Formula
- Cross-sectional area = pi x (diameter / 2)^2
- Volume per metre = Cross-sectional area (cm2) x 100 cm
For 1.75mm filament: area = 2.405 mm2, volume per metre = 2.405 cm3.
For 2.85mm filament: area = 6.379 mm2, volume per metre = 6.379 cm3.
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 Density Calculator
Look up or calculate filament density for common 3D printing materials.
Last updated: February 2026
All calculations are estimates. Always verify settings with test prints before committing to final prints.