Free tools for numbers, CSV, and Excel processing.
Sum numbers from a spreadsheet column. Paste numbers, get the total.
Convert CSV to Markdown table format.
Convert CSV data into Excel (.xlsx) format.
Convert Excel files (.xlsx) into CSV format.
Split a large CSV file into multiple smaller CSV files by row count.
Merge multiple CSV files into one. Combine CSV data.
Remove empty lines from Excel, CSV, or text.