Free Online CSV & Excel Tools

Compare lists, clean spreadsheets, merge files and convert data. Free, private, no install or sign-up.

Most popularCompare Two ListsFind matches, differences and missing items in seconds. Paste lists or upload CSV, Excel, HTML or JSON exports.Open tool

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Compare & merge

Compare Two ListsFind what's only in A, only in B, and in both. Works with HTML and JSON exports.CSV DiffSee added, removed and changed rows between two versions.Join CSV FilesCombine two files by matching columns.Fuzzy Match CSVMatch rows across two files, even with messy text.Merge CSV & Excel FilesStack two files into one, aligning columns by name.

View & clean

CSV & Excel ViewerOpen, search, sort and filter files in your browser.Remove DuplicatesFind and remove fuzzy duplicates in a CSV or Excel file.Alphabetize ListSort a list A to Z or Z to A.Remove Line BreaksJoin broken lines and tidy pasted text.

Convert

JSON to CSVFlatten JSON data into a CSV file.Excel to CSVConvert an XLSX or XLS sheet to CSV.HTML to CSVTurn HTML tables into CSV or Excel.Markdown to CSVTurn Markdown tables into CSV or Excel.TXT to CSVTurn delimited text into a clean CSV.