Free Shipping Calculators

Dimensional Weight Calculator

Get USPS, FedEx and UPS dimensional weight

Calculates both domestic and international dim weight, and USPS surcharges (balloon and oversize rates).

USPS Zone Calculator

Get the USPS postal zone between two zip codes

Cubic Tier Calculator

Determine cubic tier of a box and the amount of resizing needed for the next lowest tier

FlipperTools Shipping Calculator

Looking for the original FitShipper calculator?

Finds the best fitting, cheapest box to ship

FitShipper Labels

Ship Better, Save More