family · local-first tool
Reuse School Supplies Before Buying the Whole List Again
A new list can include things already in a drawer; count what is usable before the next trip.
Compare the supplies a school requests with household stock, condition, and a user-entered target quantity.
What changes the result: the school's current list and a family's actual reusable items.
Privacy: Calculations run in this browser tab. This tool has no input-upload, account, or AI endpoint. The site may send a page-view signal to Cloudflare; this tool does not add form entries to that signal. A draft is stored only if you choose “Save draft on this device”; that browser storage is not encrypted. Avoid identifiers or sensitive details, and delete saved drafts when finished.
Your entries
The starting rows below are fictional examples. Edit them, replace them with non-sensitive labels and values, or load the sample again. The result is not advice or a source verification.
Amount fields use the same units you enter; the app does not choose a currency. Dates are the ones you provide. Up to 100 rows per run.
Calculated output
What the calculation does
For each item, calculate max(0, target minus available quantity). The total is the sum of those user-defined gaps. A quantity target is not a safety, medical, or purchase recommendation.
Question to keep open: Should an item be replaced because it is on the new list, or only after checking the condition and quantity already on hand?
Boundary: This is a planning worksheet, not a verified external record or instruction. Check the original source, confirm dates and responsibilities with the people involved, and keep sensitive details out of shared notes.
Copy includes the headline, aggregate metrics, and boundary—not the row-by-row input. The CSV contains entries you choose to download. Review it before sharing.