Shipping Cost Calculator
Free Shipping cost Calculator for shipping. Enter your stats to get performance metrics and improvement targets. Free to use with no signup required.
Reviewed by Daniel Agrici, Founder & Lead Developer
Reviewed by Daniel Agrici, Founder & Lead Developer
Formula
DIM Weight = L×W×H / 139 (USPS/UPS/FedEx) | Billable = max(Actual, DIM)
Carriers charge by whichever is greater: actual weight or dimensional weight. DIM divisor: 139 for domestic, 166 for international.
Worked Examples
Example 1: Light large box
Problem:2 lbs, 20×15×12 inches
Solution:DIM = 20×15×12/139 = 25.9 lbs → billed at 25.9
Result:Billed at 25.9 lbs
Example 2: Heavy compact box (actual weight wins)
Problem:35 lbs, 14×12×10 inches
Solution:DIM = 14×12×10/139 = 12.1 lbs. Actual (35 lbs) exceeds DIM, so billable = max(35, 12.1)
Result:Billed at 35 lbs (actual weight governs)
References
Reviewed by Daniel Agrici, Founder & Lead Developer · Editorial policy