The question this resource answers
Estimate inventory coverage using your own observed consumption and delivery lead time. It is written for household supply organizers, with the focus kept on supply runway. The aim is a usable record or calculation rather than another generic product-ranking page.
Gather the inputs before interpreting the result
The worksheet asks for: Unopened units currently available; Units actually used per day; Delivery lead time in days. Keep the relevant package, item reference or source document nearby when completing a field. If the source does not establish a fact, leave it unresolved rather than replacing it with a plausible assumption.
How the working is performed
Divide unopened stock by observed daily use. Subtract delivery lead time to find the latest theoretical reorder point before stock reaches zero. Round the reorder interval down.
Work through a concrete case
With 80 unopened units and an observed use of two per day, stock covers 40 days. A five-day lead time places the theoretical reorder point 35 days away.
What the result cannot establish
Use is an inventory observation, not a treatment schedule or dosing recommendation. Delivery estimates can change. Review the original item and source before turning a worksheet result into a purchase statement. A calculation can be correct while an input is incomplete, outdated or attached to the wrong product.
Retain a reviewable record
Keep the date, item identity and the source behind any product-specific statement. If you share an output, retain its assumptions and limitations alongside it. Use the interactive tool to reproduce the working rather than presenting an unexplained number or verdict.