CSV to Excel
Convert a CSV file to Excel (.xlsx) in your browser. Download a real spreadsheet — nothing is uploaded.
Free web browser tools
Excel/CSV
Work with spreadsheets and delimited data locally. Convert between CSV and Excel, export to XML, SQL, HTML, Markdown, PDF, or vCard, and clean or explore large files on your device.
Excel to CSV
Convert Excel .xlsx or .xls to CSV in your browser. Choose a sheet and delimiter, then download.
CSV viewer
Open and browse a CSV in a paginated table in your browser. No upload — view large files locally.
Merge CSV files
Combine multiple CSV files into one in your browser. Rows are stacked and headers aligned by name.
CSV to XML
Convert CSV rows into structured XML in your browser. Each row becomes an element — nothing is uploaded.
CSV to SQL
Generate SQL INSERT statements from a CSV file in your browser. Set a table name and download .sql.
CSV to HTML table
Turn a CSV into a styled HTML table in your browser. Preview the markup and download an .html file.
CSV to Markdown table
Convert CSV data into a Markdown table for READMEs and docs. Runs locally in your browser.
CSV to PDF
Convert a CSV to a print-ready PDF table in your browser. Large files include the first 500 rows.
CSV to vCard
Convert a contact CSV to vCard (.vcf) in your browser. Map name, email, and phone columns, then export.
CSV editor
Edit CSV cells in a spreadsheet grid in your browser. Add or delete rows, then download CSV or Excel.
CSV analyzer
Inspect a CSV for row and column counts, inferred types, and file size — entirely in your browser.
CSV validator
Check a CSV for uneven columns and quoting errors in your browser. Review issues before using the file.
Split CSV
Split a large CSV into smaller files by row count. Download a ZIP of chunks from your browser.
Remove duplicate CSV rows
Remove duplicate rows from a CSV in your browser. Optionally dedupe on selected columns only.
Change CSV delimiter
Change a CSV delimiter between comma, semicolon, and tab in your browser, then re-export the file.
Sort CSV
Sort CSV rows by any column, ascending or descending, in your browser — then download the sorted file.
Filter CSV with SQL
Run SQL SELECT queries on a CSV in your browser (table name data). Export matching rows locally.
Extract CSV columns
Extract selected columns from a CSV into a new file in your browser. Keep only the fields you need.
Compare CSV files
Compare two CSV files by full row and see counts only in A, only in B, or in both — in your browser.
TSV to CSV
Convert TSV or other delimited text to clean CSV in your browser. Paste text or open a file.
Excel to XML
Convert an Excel sheet to structured XML in your browser. Choose a sheet and download the result.
Excel to SQL
Generate SQL INSERT statements from an Excel sheet in your browser. Set a table name and download .sql.
Excel to HTML table
Turn an Excel sheet into a styled HTML table in your browser. Preview and download an .html file.
Excel to Markdown table
Convert an Excel sheet into a Markdown table for docs and READMEs. Export locally in your browser.
Excel to PDF
Convert an Excel sheet to a print-ready PDF table in your browser. Large sheets include the first 500 rows.
Excel to vCard
Convert an Excel contact list to vCard (.vcf) in your browser. Map columns and export privately.
Excel viewer
Open and browse Excel .xlsx or .xls in a paginated table in your browser. No upload required.
Excel editor
Edit Excel cells in a spreadsheet grid in your browser. Add or delete rows, then download XLSX or CSV.
Excel analyzer
Inspect an Excel sheet for row and column counts, inferred types, and file size in your browser.
Excel validator
Validate an Excel workbook for empty sheets, empty columns, and missing data in your browser.
Merge Excel files
Combine multiple Excel files into one .xlsx in your browser. Stacks rows from each workbook’s first sheet.
Split Excel
Split a large Excel sheet into smaller workbooks by row count. Download a ZIP of .xlsx files locally.
Remove duplicate Excel rows
Remove duplicate rows from an Excel sheet in your browser. Optionally dedupe on selected columns only.
Excel to CSV with delimiter
Export an Excel sheet to CSV with a comma, semicolon, or tab delimiter — entirely in your browser.
Sort Excel
Sort Excel rows by any column, ascending or descending, in your browser — then download the workbook.
Filter Excel with SQL
Run SQL SELECT queries on an Excel sheet in your browser (table name data). Export matching rows.
Extract Excel columns
Extract selected columns from an Excel sheet into a new workbook in your browser.
Compare Excel files
Compare two Excel workbooks by full row on each file’s first sheet — only in A, only in B, or both.
TSV to Excel
Convert TSV or other delimited text to Excel (.xlsx) in your browser. Paste text or open a file.
Excel/CSV FAQs
Can I convert CSV to Excel without uploading my file?
Yes. Excel and CSV tools on ReallyUseful.Tools process files in your browser. Your data stays on your device.
Do I need Microsoft Excel to use these tools?
No. These tools run in a modern web browser, so you do not need Microsoft Excel or desktop spreadsheet software installed.
Are Excel and CSV tools free?
Yes. Every Excel and CSV tool on ReallyUseful.Tools is free to use, with no account or subscription required.
What can I do with CSV and Excel files here?
Convert between CSV and Excel, export to XML, SQL, HTML, Markdown, PDF, or vCard, and view, edit, merge, split, sort, filter, or compare files locally.