Pack Prep Tools is a focused set of practical calculators and reference notes for people who pack finished products for shipment. It is built for online sellers, small brands, marketplace shops, and compact fulfillment teams.
What the site covers
The tools address carton and mailer size, dimensional weight, length plus girth, empty space, cushioning, tape, material cost, and packing labor. They do not buy labels, quote live rates, store orders, or promise regulatory compliance.
How to use the estimates
Start with accurate package measurements, use the calculator to create a planning estimate, then verify the result with your actual materials and current carrier or supplier rules. Packaging is physical work: a bench test is the final fit check.
Independent by design
The site uses no account system and does not send calculator input values to analytics. It is intentionally lightweight, readable, and usable at a packing station.