Fix CSV encoding without leaving your computer
Drop one or more CSV files. This page guesses Shift_JIS, GB18030/GBK, Windows-1252, UTF-8 and UTF-8 with a BOM, shows a preview, and lets you download clean UTF-8. Files never leave the browser — there is no server and no tracking script.
Files stay in your browser. Nothing is uploaded.
Drop CSV files here, or click to choose
Several files are fine. Detection runs on this page only.
Tip: text is converted as you type. Copying from a web page keeps merged cells; press Ctrl+Shift+V to paste plain text instead.