The calculator converts package dimensions to dimensional weight with carrier-specific divisors, selects billable weight as the greater of actual and DIM weight, and then models shipping cost with zone, service, and surcharge assumptions.

DIM cost reduction tips

• Reduce package dimensions before negotiating shipping service speed.
• Use box-size optimization to lower dimensional premium exposure.
• Match service level to customer promise to avoid overpaying for speed.
• Benchmark high-zone shipments separately due to higher DIM cost impact.

Sources & references