When weekdays or job titles keep sorting alphabetically
Data with a natural order β weekdays, job titles, sizes β gets scrambled by a plain alphabetical or numeric sort. Building a custom list once lets Excel sort that data in the order that actually makes sense.
Worth knowing alongside this: basic ascending/descending sorts
On top of custom lists, getting comfortable with standard ascending and descending sorting makes everyday data cleanup noticeably faster.
Frequently Asked Questions
Can I reuse a custom list I built in a different file?
Yes. Custom lists are saved to the Excel application itself, so any file you open on the same computer can use the same lists.
Can I import an existing range of cells as a list instead of typing it?
Yes. In the Custom Lists dialog, click "Import" and select a range of cells, and that order gets registered as a new list automatically.