The spreadsheet has 180 rows, six of which are wrong, and the app has no import button. That sounds like an afternoon of typing. It is less than that, as long as you stop treating the spreadsheet as the thing being moved.
Move the cellar, not the file
A spreadsheet is a record of what you believed you had on the day you last edited it. The shelves are what you actually have. Copying the file forward carries every stale row into the new system, and you will not find out which rows were wrong until you go looking for a bottle that is not there.
Working shelf by shelf gives you an accurate list and a physical count in one pass. It takes about the same time as typing from the file and produces a better result. The inventory guide covers the counting method itself.
Four fields per wine, then stop
Producer and wine with the vintage, quantity, location, and a photograph of the label. That is enough to search, find and count. Everything else, including prices, drinking windows and tasting notes, can be added later for the bottles that earn it.
Photograph rather than transcribe. A label photo takes two seconds and preserves the importer text, the alcohol level, the cuvée name and the small print you would otherwise be typing at eleven at night. The label scanning guide covers getting a photo the text recognition can actually read.
Decide what is not coming with you
Three categories are worth leaving behind. Rows for wine you have already drunk belong in the old file as history, not in the new list as ghosts. Wines you want but do not own belong on a wish list, as the wish list guide describes. Duplicate rows for the same wine should be merged before the move, not after, using the duplicate cleanup method.
The same goes for columns. If nobody has filled the supplier column since 2022, it is not a field you need, it is a field you inherited.
Areas or racks to cover: Rack being entered: Bottles counted on the shelf: Bottles entered: Differences found and resolved: Spreadsheet rows not carried over, and why: Date this rack was completed:
Keep the old file until the new one is proven
Do not delete the spreadsheet on the day you finish. Save it read-only with the date in the filename, and keep it with your backups. The backup guide covers where that copy should live.
One month of ordinary use is a fair test: a list you have searched under pressure, added a delivery to, and taken a bottle out of. If it survives that, the spreadsheet is history rather than a fallback.
What you gain, and what you actually lose
You lose formulas, pivot tables and the freedom to invent a column at midnight. That freedom is worth something, and pretending otherwise is why so many comparison articles read as advertising. The spreadsheet or app guide sets out the trade honestly.
You gain label photographs, a location for every bottle, and a count that changes when you open something rather than when you remember to. For most collections the deciding factor is not features. It is whether the record still matches the shelves after six months, and a spreadsheet that requires discipline usually does not.