How to use
Enter the coil’s outside and inside diameters, sheet width and thickness in mm, and density in kg/m³. The inside diameter must be smaller than the outside diameter.
Example calculation
Outside diameter 1000 mm, inside diameter 500 mm, width 1000 mm and thickness 2 mm give approximately 294.52 m of sheet and 4653.48 kg at 7900 kg/m³.
Calculation method
L = π(D² − d²) / (4t) × 10⁻³ m; m = π(D² − d²)wρ / 4 × 10⁻⁹ kg (D, d, t, w: mm; ρ: kg/m³)
Calculation limits
Assumes an ideal, tightly wound coil with no gaps. Excludes core and packaging mass, winding gaps and thickness tolerances.