Check a spreadsheet, then clean it up

The faults that quietly break a spreadsheet are the ones you cannot see: a number stored as text sums to nothing, a date stored as text sorts alphabetically, and a blank row in the middle truncates every range below it. Each one is reported with the cell to go and look at.

Drop a spreadsheet here, or click to choose .xlsx or .csv · up to 14 MB · the old .xls cannot be read — save it as .xlsx first

First row is headingsUntick if your data starts on row 1. Fix what can be fixedReturns a corrected copy with every change listed. Remove duplicate rowsOff by default — two identical sales are often both real.

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Reading the sheet…

What to look at

Severity	Cell	What	Why it matters

What was changed

Cell	Change	Before	After

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