View, merge, split, convert, and analyze tabular data — CSV and Excel tools that run entirely in your browser.
Browse CSV, diagnose issues, auto-repair errors, and handle large files.
Convert .xlsx or .xls spreadsheets to CSV format.
Turn CSV data into a downloadable Excel workbook.
Combine multiple CSV files into one with unified headers.
Split a CSV into separate files by column values.
Group and aggregate CSV data with sum, count, or average.
Build VLOOKUP formulas and test lookups against CSV data.
Remove one or more columns from a CSV file instantly.
Filter CSV rows by column value, contains, or numeric compare.
Parse Excel formulas like SUM, AVERAGE, and VLOOKUP.