DIM weight is calculated by multiplying the length, width, and peak with the package deal or box sizing, then dividing by a regular DIM divisor. Shipping carriers like USPS, FedEx, and UPS calculate shipping charges https://bookmarkingdepot.com/story18038253/how-much-you-need-to-expect-you-ll-pay-for-a-good-how-shipping-rates-are-calculated-at-checkout