Home / Kit weigher and storage clock
Two calculators, run in your browser
Rowbuy Spreadsheet kit weigher and storage clock
The kit weigher prices a parcel with the rules in Rowbuy's public estimator data. The storage clock counts the free days left on an item at the warehouse.
Kit weigher for a Rowbuy parcel
Enter the pieces you plan to send together and the carton you expect them in. The weigher adds the pieces, works out the size-based weight, takes whichever is larger, rounds it up the way the option does, and prices it in yuan and dollars. A blank or zero piece is simply skipped.
The rules come from Rowbuy's estimator data read on October 24, 2026: a United States parcel costs CNY 135 up to half a kilo, then CNY 39 or CNY 40 per extra half kilo depending on the option, with size weight being the carton's volume in cubic centimetres over 6,000; the Canada option adds CNY 7.10 per 100 g to a fixed CNY 30, divides by 8,000, and takes parcels from 100 g to 30 kg. The dollar rate is the one Rowbuy's product pages showed on October 24; change it if the site shows another.
How the weigher treats edge cases
An empty parcel returns no price, because there is nothing to send. A United States parcel under 500 g is charged as 500 g, which is that option's minimum. A Canada parcel over 30 kg is refused, as the estimator data sets that as the ceiling, and the weigher tells you to split it. We tested zero, the minimum and the maximum by hand on October 24.
The weigher cannot know the final checked weight. Use the weights Rowbuy records for your items at the warehouse when you can, then check the result against Rowbuy's own estimator before you pay.
Storage clock for items at the warehouse
Rowbuy's home page gives a 120-day ceiling for storage, free for the opening 90. It does not publish what happens to the fee after day 90, and its help article on storage gives no number at all. The clock counts from the day your item showed as stored.
Occasion filter for the thirty picks
The third tool lives on the occasion index: choose an occasion and a ceiling per piece and it lists the picks whose bottom-line amount fits. It uses the amount rather than the tag because that was the figure at checkout for the preset option.
None of the three tools stores anything or sends what you type anywhere. Reload the page and they reset.