Fix it with Stella · Spreadsheets
Thirty spreadsheets, one clean sheet.
Don't learn Power Query. Don't record a macro. Tell Stella what the final sheet should look like, and it combines the files, fixes the columns, dedupes the rows, and hands you one clean workbook — then does it again next week when the new files land.
Free. No credit card, no trial. Go is $5/mo, Pro is $15/mo.
Sound familiar?
You've probably already searched this.
- combine multiple excel files into one
- merge csv files into one spreadsheet
- consolidate excel sheets without copy paste
- clean up messy excel data
- automate weekly excel report
How it works
Tell Stella. It works your computer. Done.
- 1You describe the problem in your own words.
- 2Stella uses your apps, browser, and files.
- 3You watch every step. Destructive work waits.
Try this prompt
“Merge every CSV in this folder into one spreadsheet — same columns, no duplicate rows, dates formatted consistently.”
You: Merge every CSV in this folder into one spreadsheet — same columns, no duplicate rows, dates formatted consistently. Stella: Twelve files, mismatched headers. I'll align the columns, dedupe rows, and write one clean workbook. You: Dates as dates, please. Stella: Done — dates are real dates, numbers are numbers. The file is on your desktop.
On this problem
What Stella actually does.
- Reads every file in the folder, whatever the format
- Aligns mismatched columns and headers into the layout you asked for
- Dedupes rows and fixes types — dates as dates, numbers as numbers
- Writes one clean workbook, and can repeat the whole job on next week's files
Ready when you are
Stop copy-pasting between workbooks.
Download Stella for Mac or Windows and tell it what's broken.
Free. No credit card, no trial.