🧵 Copper Wire Weight Calculator
Enter the wire diameter and length to calculate the total weight of copper wire, based on its cross-sectional area and copper’s density.
Calculating copper wire weight
The weight of a length of copper wire depends only on its cross-sectional area (from diameter), its length, and copper’s known density, making it straightforward to calculate for materials estimating, shipping, or scrap value purposes.
The formula
Cross-sectional area is A = πr2, where r is half the wire diameter. Volume is then Area × Length, and weight is Volume × Density, using pure copper’s density of 8,960 kg/m3 (8.96 g/cm3).
This calculates the weight of solid, pure copper conductor only; insulated cable, stranded conductors with air gaps, or copper alloys will weigh somewhat differently. This calculator is for general reference and estimating purposes.