Spreadsheet Tools
Convert Excel workbooks (.xlsx, .xlsm, .xls, .ods) to JSON and CSV — parsed locally in your browser with SheetJS, the file is never uploaded.
Excel to JSON ConverterConvert an .xlsx, .xlsm or .xls workbook to JSON in your browser — a lossless table dump of the first sheet (header row included), a live preview of every sheet, correct UTF-8, and the file is never uploaded.Excel to CSV ConverterConvert an .xlsx, .xlsm or .xls workbook to RFC 4180 CSV with correct UTF-8 — commas and quotes are escaped by doubling, every sheet is previewed, no upload and no sign-up.CSV to XLSX ConverterPaste CSV, TSV, semicolon or pipe text and download a real .xlsx — quotes, CRLF and UTF-8 handled, delimiters auto-sniffed (TAB ; , |) or set by hand, decimal commas preserved, nothing uploaded.JSON to XLSX ConverterPaste a JSON array of objects or rows and get a real .xlsx — header from the key union, numbers stay numeric, mixed shapes are refused not guessed, all in your browser.