Free data tools
Small, fast tools for the spreadsheet jobs that come up every week. No sign-up, no limits, and your files never leave your browser.
Private by design: processed on your device, never uploaded
- Free tool
Remove duplicates
Find and remove duplicate rows by the columns you choose.
- Free tool
JSON to CSV
Paste or upload JSON and get a clean CSV table.
- Free tool
CSV to Excel
Turn a CSV file into a tidy .xlsx workbook.
- Free tool
Excel to CSV
Export any sheet of an .xlsx file as CSV.
- Free tool
Merge CSV files
Combine many CSV files into one, matched by column name.
- Free tool
Split CSV
Break a big CSV into smaller files and download them as one zip.
- Free tool
CSV to JSON
Turn a CSV or Excel table into JSON, with options for types and nesting.
- Free tool
Compare two files
Find changed cells, new rows and removed rows between two spreadsheets.
- Free tool
Quick forecast
Upload dates and numbers, get a chart and a forecast with a likely range.
Need something custom?
If your spreadsheet job is not covered here, I can build the tool for you. Tell me what you do by hand every week.