Hi Product Hunt! I built LocalSheet for everyday spreadsheet work without account setup or uploading files to a server. It runs in your browser and keeps your sheets on your device. You can import CSV and XLSX files, edit and format cells, add dropdowns, write formulas by clicking cell references, and drag-select ranges for instant calculations. Export to XLSX, CSV or PDF, or keep working offline after your first successful load. This first version focuses on simple spreadsheets; advanced Excel features like macros and charts are outside its scope. Keep a copy of your original file when importing complex workbooks. LocalSheet is part of My Free Tool Kit. Try it at https://localsheet.mftk.site — I would love to hear which everyday spreadsheet task you want made easier next.

LocalSheet

Free, private spreadsheets that work offline

Free, private spreadsheets that work offline