DataMimiDataMimi

excel merge software for multiple Excel formats

You have multiple Excel files open in different formats like XLSX, XLS, CSV, or TSV and need to combine them into one report. DataMimi's excel merge software handles these diverse formats together without requiring manual file conversion.

Merge multiple Excel files in different formats into one consolidated file without manual conversion.

Drop your file in and ask a question — no account needed.

Upload your spreadsheet.xlsx .xls .csv — free to try, no account

Or start with

How do I merge XLSX and CSV files into one Excel sheet?Can I combine XLS, XLSX, CSV, and TSV files without converting them first?How to handle different column headers when merging multiple Excel files?Why do some numbers appear as text after merging CSV files?How can I keep track of which data came from which source file after merging?

What this export contains

Sheet Name
Row Number
Column Headers
Cell Values
File Source
Data Type
Date
Amount
Category
Notes

What usually goes wrong with it

  • Multiple file formats

    You often have XLSX, XLS, CSV, and TSV files that need merging, but most tools require converting all files to one format first.

    DataMimi Reads XLSX, XLS, CSV, and TSV files together without requiring you to convert each to a single format first.

  • Inconsistent headers and columns

    Files from different sources have different column headers or order, complicating direct merging.

    DataMimi Matches and aligns columns by header names, letting you preview merged columns to resolve inconsistencies.

  • Data type mismatches

    Numbers stored as text in CSV or TSV files cause errors or require manual correction before merging.

    DataMimi Detects and converts numbers stored as text during the merge process to avoid calculation errors.

  • Merged title or subtotal rows

    Some Excel exports include merged title rows or subtotal rows that disrupt clean data consolidation.

    DataMimi Identifies and allows removal of subtotal and merged title rows before merging to keep data clean.

  • Loss of file source traceability

    After merging, it is hard to track which rows came from which original file without manual tagging.

    DataMimi Tags rows with their original file name so you can trace data back to its source after merging.

Common questions

What file formats does this excel merge software support?

DataMimi supports XLSX, XLS, CSV, and TSV files simultaneously without requiring manual format conversion.

Can I merge files with different column structures?

Yes, DataMimi aligns columns by matching headers and allows you to preview and adjust before merging.

How does it handle numbers stored as text in CSV or TSV files?

DataMimi detects numeric values stored as text and offers cleaning options to convert them properly during merging.

Does merging keep track of original file sources?

Yes, each row can be tagged with its source file name to maintain traceability after merging.

Are subtotal or merged title rows removed automatically?

DataMimi identifies common subtotal and merged title rows and lets you exclude them before merging.

Try it with your own file

DataMimi reads the file you actually have — merged cells, headers below row one, totals pasted at the bottom — and shows which rows and columns every number came from.

Ask about your file

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