Stretch Film Calculator
Roll Width (inches): Roll Diameter (inches): Core Diameter (inches): Film Thickness (gauge): Calculate Film Length (feet): function calculate() { const rollWidth = parseFloat(document.getElementById(‘rollWidth’).value); const rollDiameter = parseFloat(document.getElementById(‘rollDiameter’).value); const coreDiameter = parseFloat(document.getElementById(‘coreDiameter’).value); const filmThicknessGauge = parseFloat(document.getElementById(‘filmThickness’).value); if ( isNaN(rollWidth) || isNaN(rollDiameter) || isNaN(coreDiameter) || isNaN(filmThicknessGauge) || rollDiameter