You've decided to move off the spreadsheet. Here's how to actually do it.

Still deciding whether to move off the spreadsheet at all? Start with the decision guide — this page picks up after that decision is already made.

A spreadsheet-to-CRM migration goes wrong in one of two ways: it takes so long to set up that momentum dies before it's done, or data gets lost or duplicated in the move. Both are avoidable with a specific order of operations: clean the spreadsheet minimally before exporting (not perfectly, just enough), map your columns to the CRM's fields before importing rather than during, import in one pass rather than piecemeal, and spend the first week logging new activity in the CRM in parallel rather than switching over all at once. Done this way, a real migration takes hours, not days.

The instinct is to clean the spreadsheet perfectly before moving it, dedupe every row, standardize every field. Resist that. A full cleanup project is exactly the kind of task that stalls a migration indefinitely. Do the minimum that matters: remove rows that are genuinely dead (deals that closed or died months ago with no reason to keep tracking them), and make sure the columns you actually use (name, company, email, stage, deal value) are reasonably consistent. Everything else can be cleaned up inside the CRM after the fact, where it's easier to spot duplicates and inconsistencies than it is inside a spreadsheet.

Know before you start which spreadsheet column becomes which CRM field, name and email are usually obvious, but "stage" often isn't a clean match: your spreadsheet's status column ("In Progress," "Following Up," "Hot") rarely maps one-to-one onto a structured funnel. Decide the mapping up front, for the Bell's AIDA stages (Awareness, Interest, Desire, Action), most spreadsheet status columns collapse fairly cleanly into these four if you map them before importing rather than trying to decide contact-by-contact during the import itself.

Piecemeal imports, a few contacts today, a few more next week, are how duplicates happen. Export the full, minimally-cleaned spreadsheet as a CSV and import it in a single pass. If you're worried about mistakes, do a first import of ten test rows, confirm the field mapping looks right, then import the rest in one go.

Don't try to switch fully on day one. For the first week, log new activity, calls, notes, follow-ups, in the CRM as it happens, while keeping the spreadsheet as a reference in case something was missed in the import. By the end of a week of actually using it for new activity, the CRM will be more current than the spreadsheet, and the cutover finishes itself rather than requiring a hard switch-over day.

Importing before mapping fields usually means a second cleanup pass afterward, undoing the exact time savings the CRM was supposed to provide. Trying to achieve a perfectly clean spreadsheet before exporting is the single most common reason migrations stall out and never happen at all. Cutting over completely on day one, instead of running in parallel, is the most common reason people revert to the spreadsheet within a week, the CRM feels unfamiliar under real pressure, and the old habit wins by default.