Free Excel Tools
16 Free Browser-Based Excel Tools
Sixteen free tools that run entirely in your browser — no signup, no file uploads, completely private. Your spreadsheets never leave your device.
Excel Spreadsheet Auditor
Full spreadsheet audit in seconds: formula errors, inconsistent formulas, hidden sheets, broken external links, hardcoded values, and more.
- Detects #REF!, #VALUE!, #DIV/0! and all error types
- Finds hidden and very-hidden sheets
- Flags hardcoded values in formulas
- Downloadable audit report
Excel to CSV Converter
Convert any .xlsx or .xls file to CSV instantly. Choose your delimiter — comma, semicolon, tab, or pipe. Multi-sheet support included.
- Comma, semicolon, tab, pipe delimiters
- Multi-sheet support
- UTF-8 BOM for Excel compatibility
- Preview before download
CSV to Excel Converter
Convert any CSV or text file to an Excel workbook (.xlsx). Auto-detects delimiter, numbers stay as numbers.
- Auto-detect delimiter
- Numbers converted correctly
- Custom sheet name
- Preview before download
Duplicate Row Finder
Find and remove duplicate rows from any Excel spreadsheet. Select which columns define uniqueness, preview every duplicate, download a clean file.
- Column-level duplicate control
- Case-insensitive matching
- Colour-coded results table
- Download clean or duplicates-only file
Merge Excel Files
Combine multiple Excel workbooks into one file. Stack rows vertically or keep each file as a separate sheet.
- Upload multiple files at once
- Stack rows or separate sheets
- Duplicate headers removed automatically
- Reorder files before merging
Excel to JSON Converter
Convert any Excel spreadsheet to JSON. First row as object keys, pretty or minified output, copy to clipboard.
- First row as object keys
- Pretty print or minified
- Skip empty cells option
- Copy to clipboard or download
Split Excel by Column
Split one sheet into multiple sheets based on a column value. Preview row counts per group before downloading.
- Split by any column
- Preview groups and row counts
- All splits in one workbook
- Individual downloads per group
Reduce Excel File Size
Reduce oversized Excel files by compressing or stripping formatting. See the before/after size reduction instantly.
- Compress-only (keeps formatting)
- Strip formatting for max reduction
- Remove hidden sheets
- Remove empty rows
Remove Blank Rows
Clean up your spreadsheet by removing all empty rows in one click. Preserves cell formatting and column widths.
- Completely empty or first-column-empty
- Apply to active sheet or all sheets
- Preserves all cell formatting
- Shows blank row count before removing
Transpose Excel
Swap rows and columns in any Excel sheet. Preview the transposed result before downloading.
- Transpose one sheet or all sheets
- Live preview of result dimensions
- Works on any size spreadsheet
- Values preserved — formulas converted
Excel Find & Replace
Find text or numbers across your entire workbook and replace them in bulk. Preview every match before applying.
- Search all sheets at once
- Case-sensitive or whole-cell match
- Preview all matches before replacing
- Leave replacement blank to delete
Extract Unique Values
Extract all unique values from any Excel column with occurrence counts. Build dropdown lists, audit categories, and profile data.
- Any column, any sheet
- Count of occurrences per value
- Case-sensitive option
- Download as CSV or Excel
Excel Column Statistics
Get instant statistics for every column: count, sum, average, min, max, and empty cell counts. No formulas needed.
- Sum, average, min, max per column
- Non-empty and empty cell counts
- Auto-detects numeric columns
- Download stats as Excel report
Excel to XML Converter
Convert any Excel sheet to well-formed XML. Customise root and row element names, preview live, download instantly.
- First row used as field names
- Custom root and row element names
- Live XML preview
- Special characters auto-escaped
Compare Excel Files
Upload two Excel files and instantly find every cell-level difference — changed, added, and removed values highlighted.
- Cell-level diff across two workbooks
- Changed, added, removed categories
- Select sheets from each file
- Download comparison report
Sort Excel Online
Sort any Excel sheet by up to 3 columns in ascending or descending order. Preserves cell formatting.
- Up to 3 sort levels
- Ascending or descending per column
- Preserves cell formatting
- Apply to one sheet or all sheets
100% Private by Design
Every tool runs entirely in your browser using JavaScript. Your Excel files are read locally and never sent to any server, stored, or analysed by anyone. Close the tab and the data is gone.
More Tools Coming Soon
We are continuously building new free Excel tools.