CSV converter tools

Clean CSV files online. Trim whitespace, remove empty rows, and fix line endings. Runs in your browser.

Remove duplicate rows from CSV files. Dedupe by entire row or a specific column. Instant, browser-based.

Split a CSV file into multiple files by row count. Download-ready chunks for large datasets.

Merge multiple CSV files into one. Combines headers automatically. Paste or type CSV content.

Upload an .xlsx file or paste a table copied out of a sheet and get plain CSV rows back, with the formatting and formulas left behind.

Turn CSV rows into a file Excel opens with the columns already split, avoiding the import wizard and the mangled dates it usually produces.

Switch a file between commas, semicolons, tabs and pipes, for when Excel in a European locale refuses to open a comma separated file correctly.

Rename and reorder CSV headers to match the columns an importer expects, so a spreadsheet from one system loads into another without hand editing.

Flip rows into columns and columns into rows, for when data arrives the wrong way round for the chart or the import you need it for.