33 spreadsheet tools

Online tools for Excel and CSV files

One task, one page. Upload your file, pick the options, download the result.

Free, no usage limits No sign-up, no email Nothing written to disk
A spreadsheet cleaning itself Illustration of a spreadsheet with several rows where the duplicate rows disappear and a check mark appears. XLSX · XLS · CSV

What you can do with your spreadsheets

Five families of tasks that solve what Excel leaves half-done: merge, convert, clean, analyse, and a few utilities that normally need a macro.

Merge and split

Join several files into one, break a workbook into pieces, or split a sheet by row count or by the value of a column.

6 of 6 available

Format conversion

Go from Excel to CSV, JSON, SQL, PDF, HTML or XML and back, choosing delimiter and encoding so it opens correctly wherever you need it.

8 of 8 available

Cleaning and transformation

Strip duplicates and blank rows, normalise dates and numbers, unpivot cross-tabs and replace text in bulk.

10 of 10 available

Analysis and comparison

Compare two spreadsheets cell by cell, join them on a key column, summarise columns and spot data quality problems.

6 of 6 available

Advanced utilities

Pull tables out of a PDF, consolidate monthly sheets into a yearly one, and remove sheet protection from your own files.

3 of 3 available

How it works

Three steps, no account and nothing to install. The tool does the work and you download the finished file.

Upload your file

Drop or pick an .xlsx, a legacy .xls or a .csv. Delimiter and encoding are detected automatically.

Pick the options

Each tool asks only what it needs and explains what every option does. The defaults are already right for the common case.

Review and download

Check the result on screen before downloading it, fix it by hand if you need to, and download as Excel or CSV.

Your file is not stored anywhere Your file is processed in memory and discarded the moment it is done. It is never written to disk, never linked to your identity and never shared.

Featured tools

The tasks that come up again and again in any office.

Format conversion

Convert Excel to CSV

Convert an Excel file to CSV, choosing the separator and the encoding so it opens correctly in any program.

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Format conversion

Convert CSV to Excel

Turn a CSV into an .xlsx file, detecting delimiter and encoding automatically.

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Cleaning and transformation

Remove duplicate rows in Excel

Strip repeated rows from an Excel or CSV spreadsheet, comparing every column or only the ones you pick.

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Cleaning and transformation

Unpivot an Excel table

Turn a cross-tab (months or categories spread across columns) into the tabular shape that pivot tables and every analysis tool expect.

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Analysis and comparison

Compare two Excel files

Show the cell-by-cell differences between two spreadsheets, highlighting what changed.

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Analysis and comparison

Column statistics summary

Compute sum, average, minimum, maximum, count and nulls for every numeric column.

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Analysis and comparison

Group and count by value

Count how often each value of a column appears: a pivot table in one click.

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Analysis and comparison

Highlight duplicates in Excel

Colour the repeated rows or cells without deleting them, so you can review them yourself.

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Why use excelempowers

Privacy that holds up

Your file is processed in memory and discarded when the request ends. It is never written to disk, never linked to your identity and never shared.

Every format you actually use

Modern Excel (.xlsx), the legacy binary .xls that accounting systems still produce, and CSV with any delimiter and encoding.

See and edit before downloading

Every tool shows the result on screen, and you can fix cells, add rows or delete them without leaving the browser.

Free and frictionless

No account, no email, no watermark and no daily usage counter. One task, one page, one result.