What it does
ActuallyFreeTools converts spreadsheets between Excel (.xlsx), CSV and JSON for free, merges several files or sheets into one table, removes duplicate rows and trims stray spaces. CSV files are saved so Excel opens Arabic and other scripts correctly. It all happens in your browser, so customer lists and financial data stay private.
How to use it
- Drop one or more spreadsheets.
- Choose the output and whether to merge, dedupe and trim.
- Process, preview and download.
Questions people ask
Why does my CSV show strange characters in Excel?
Excel guesses the wrong encoding without a marker. Files saved here include it, so Arabic and accented text display correctly.
How are duplicates found?
Either the whole row must match, or just one column you choose — such as email.
Can it merge files with different columns?
Yes. Columns are matched by name; missing values are left blank.
Is Excel & CSV tools on ActuallyFreeTools really free?
Yes. There is no sign-up, no daily limit, no watermark and no paid tier. Nothing is held back for paying users.
Are my files uploaded anywhere?
No. Excel & CSV tools runs inside your browser, so your files are processed on your own device and never sent to a server. That is also why there is nothing to meter or charge for.
Related tools
Last updated 30 October 2026. ActuallyFreeTools tools run entirely in your browser.