Manage Columns in Excel Files Online
Drop or select specific columns from Excel files directly in your browser. No upload required.
About this tool
Select and reorder columns from Excel files without writing any code. Tick the columns you want to keep, drag to reorder, and download the result. Runs entirely in your browser.
Frequently Asked Questions
Can I reorder columns in a Excel file as well as remove them?
Yes. Columns appear in the output in the order you select them. Deselect all and reselect in a different order to change column positions.
What happens to data in the columns I drop from a Excel file?
Dropped columns are excluded from the output. The original file is unchanged — you can always re-run the tool with a different selection.
Does selecting columns from a Excel file change data types?
No. Data types are preserved exactly as they appear in the original file.
Is my data private?
Yes — completely. Your file is never uploaded to any server. Everything runs locally in your browser using WebAssembly — processing happens entirely inside your tab. Once you close the tab, nothing is retained.
What is the maximum file size?
The free limit is 50 MB. For larger files, performance depends on your device's available memory — most modern machines handle 500 MB to 1 GB comfortably.
Related Tools
Count Values in Excel Files Online
Group and count rows by any column in Excel files directly in your browser. Sort by frequency or value to find the most common entries — no upload required.
Extract Unique Values from Excel Files Online
Extract all distinct values from any column in Excel files directly in your browser. Download the unique values list — no upload required.
Compare Excel Files Online
Compare two Excel files directly in your browser. See rows only in file A, only in file B, and rows common to both — no upload required.
Format Timestamps in Excel Files Online
Reformat timestamp and date columns in Excel files directly in your browser. Convert between ISO 8601, Unix epoch, US date, and custom strftime patterns — no upload required.
Find & Replace in Excel Files Online
Find and replace text values in Excel files directly in your browser. Supports plain text and regex patterns across any column — no upload required.