Roll Diameter Calculator

Roll Diameter · Product Length · Roll Weight

Product Category

Production Site

Calculation Mode

Input Parameters

Core Outer Diameter (d)

Product Thickness (t)

mm

±

mm

Thickness ± Tolerance (optional)

Product Length (L)

m

Roll Diameter (D)

mm

Roll Weight optional

Roll Width (optional)

m

Mass per Unit Area (optional)

g/m²

Calculated Weight

kg

Geometry: π/4 × (D² − d²) = L × t | Weight: W [kg] = Mass per unit area [g/m²] × L [m] × Width [m] / 1000

Known Reference Roll

Core Outer Diameter (d)

Known Roll Diameter (D₀)

mm

Known Roll Length (L₀)

m

New Roll Length

New Roll Length (L₁)

m

Tolerance (optional)

±

mm

Thickness ± Tolerance (optional)

Roll Weight optional

Roll Width (optional)

m

Mass per Unit Area (optional)

g/m²

Geometry: D₁ = √(d² + L₁/L₀ × (D₀² − d²)) | Weight: W [kg] = Mass per unit area × L₁ × Width / 1000