Why do calculated weights vary from actual weights?

Published density values are for virgin, unfilled materials at room temperature. Real-world factors like manufacturing processes, additives, fillers, and temperature can cause density variations of ±2-15%. Always verify with your material supplier for critical applications.

How accurate are the density values in your calculator?

Our density values are based on industry standards and typical material specifications. They provide excellent accuracy for most applications, typically within 5% of actual weights. For precision applications, consult your material supplier's technical data sheets.

Which plastic is lightest for weight-sensitive applications?

HDPE (0.95 g/cm³) is among the lightest common plastics and actually floats in water. Other lightweight options include LDPE and PP. These are ideal for aerospace, automotive, and portable applications where weight matters.