Copper Coil Weight Calculator
Copper is the densest common coil material at 8.96 g/cm³ - about 14% heavier than steel for identical dimensions. With copper prices where they are, accurate weight calculation is as much a commercial necessity as a logistics one.
This is an interactive calculator; enable JavaScript to use it. Enter coil OD, ID and width to get weight in kg/tonnes, plus strip length if thickness is given.
Typical Copper Coil Specifications
| Density | 8.96 g/cm³ (heaviest common coil metal) |
| Common thickness | 0.1–3mm strip and foil |
| Common coil ID | 300mm, 406mm or 508mm |
| Typical coil weight | 0.5–5 tonnes |
Example: a copper coil with 1000mm OD, 406mm ID and 600mm width weighs about π/4 × (1000² − 406²) × 600 × 8.96 × 10⁻⁶ ≈ 3.5 tonnes.
Coil Weight Formula
Weight (kg) = π/4 × (OD² − ID²) × Width × Density × 10⁻⁶ - with OD, ID and Width in millimetres and density in g/cm³.
Frequently Asked Questions
Why are copper coils narrower and lighter than steel coils?
Copper strip is mostly used in electrical applications - transformers, busbars, cables - which need narrow widths. Combined with copper's cost, coils are typically slit narrow and kept between 0.5 and 5 tonnes.
How accurate is coil weight calculation for pricing copper?
The geometric formula is accurate to within 1–2% for tightly wound coils. At copper prices, always confirm with a weighbridge for commercial transactions; use the calculator for planning, equipment sizing and freight estimates.