Merge Excel, CSV, TSV & ODS files into one — formats kept intact

Drop in any mix of spreadsheet files. Original number formats, dates, currency and text are preserved exactly — everything runs locally, nothing uploads anywhere.

.xlsx.xls.xlsm.csv.tsv.ods.txt (delimited)

1ADD YOUR FILES

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Drop files here or click to browse

Mix any combination of Excel, CSV, TSV, or ODS files — select multiple with Ctrl/Cmd+Click

2CHOOSE HOW TO MERGE

Stack rows (recommended)

All rows from every file combined into one sheet. Best when files share the same column layout — CSV exports, monthly reports, branch data.

Keep as separate sheets

Each file (and each sheet inside multi-sheet workbooks) becomes its own tab in the output file.

Skip repeated header row

Treats the first row of every file as a header. The header from the first file is kept once; later files have it dropped so it isn't duplicated. Only applies to Stack mode.

Add a "Source File" column

Adds the original filename (and sheet name, if applicable) next to every row so you can trace where it came from.

Read every sheet in multi-sheet workbooks

By default only the first sheet of each .xlsx/.xls/.ods file is used. Check this to pull data from every sheet inside each workbook too.

Output filename: .xlsx

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Free Online Excel Merger - Combine Multiple Sheets | Merge Multiple Excel Files into One Free Online

Merge Excel, CSV, TSV & ODS files into one — formats kept intact

1ADD YOUR FILES

2CHOOSE HOW TO MERGE