Aluminium Coil Weight Calculator
Aluminium is roughly one-third the density of steel (2.70 vs 7.85 g/cm³), so an aluminium coil of the same dimensions weighs about 66% less. This changes everything downstream - decoiler ratings, crane capacity and freight costs are all sized differently for aluminium lines.
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 Aluminium Coil Specifications
| Density | 2.70 g/cm³ (≈ 1/3 of steel) |
| Common thickness | 0.2–4mm |
| Common coil ID | 406mm, 508mm or 610mm |
| Typical coil weight | 1–8 tonnes |
Example: an aluminium coil with 1500mm OD, 508mm ID and 1250mm width weighs about π/4 × (1500² − 508²) × 1250 × 2.70 × 10⁻⁶ ≈ 5.3 tonnes - versus 15.3 tonnes for the same coil in steel.
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
How much lighter is an aluminium coil than a steel coil?
About 66% lighter for identical dimensions - aluminium's density is 2.70 g/cm³ versus 7.85 for steel. A coil that would be 15 tonnes in steel is roughly 5.3 tonnes in aluminium.
Does aluminium need different coil handling equipment?
Capacity requirements are lower, but aluminium scratches easily - decoilers and recoilers for aluminium typically use non-marking rolls, felt-lined guides and gentler tension control rather than just smaller ratings.