2026-07-23
Splitting One Massive Workbook Into Per-Sheet Files
One workbook with twelve monthly sheets becomes twelve separate files, in one download.
A workbook with many sheets — one per month, one per region, one per team — is convenient to build but often inconvenient to distribute, when each recipient really only needs their own sheet as a standalone file.
How Split Excel Workbook works
The tool reads every sheet in your workbook and lets you choose which ones to include in the split — by default, all of them are selected. Each selected sheet becomes its own .xlsx file, and every file is delivered together in a single .zip download rather than one at a time.
Each output file reuses the original sheet's data directly, the same way separate-sheets merging does, rather than rebuilding it from plain values.
Common uses
Splitting a combined monthly report into twelve individual month files, breaking a regional rollup into one file per region for distribution to local teams, or separating a workbook that accumulated too many unrelated sheets over time back into individual files.
Tools used in this guide
FAQ
Can I split only some sheets, not all of them?
Yes — every sheet is selected by default, but you can deselect any you don't want included in the split.
What if two sheets have similar names?
Each output file is named after its sheet, with invalid filename characters removed — sheet names that are already distinct produce distinct filenames.
Can I merge the split files back together later?
Yes — Merge Excel Files in 'separate sheets' mode takes multiple files and puts them back into one workbook as separate tabs.