Sheet Split Zip Zip

Split a multi-sheet XLSX workbook into one CSV per sheet, or one CSV per N rows, in a single ZIP, without opening Excel and without uploading your file anywhere.

Free100% in your browserNo sign-up

Workbook file (.xlsx or .xls)Rows per file (0 means one file per sheet)Keep header row in every chunk

Runs 100% in your browser. Your files never leave this device.

How it works

XLSX and XLS upload parsed locally with SheetJS, nothing uploaded
Sheet picker info with row and column counts plus a preview summary
Export every sheet as UTF-8 CSV with correct quoting, in one ZIP
Optional split by rows, for example 1000 rows per file, header kept
Excel serial date detection warning before you export