Aluminum Coil Weight Calculator

Estimate the mass of a tightly wound aluminum coil by treating the coil as an annular cylinder. The result is an approximation and does not account for gaps, telescoping, core material or packaging.

Formula

Estimated weight (kg) = π ÷ 4 × (OD² − ID²) × width × density ÷ 1,000,000, where all dimensions are in millimeters and density is in g/cm³.

For procurement and freight planning, confirm whether the stated coil weight is net material weight or gross packed weight. Use measured weight for final settlement.