Hey hunters 👋 I kept needing to split a spreadsheet into separate files — one per region, per department, per client — and every "online Excel splitter" wanted me to upload my file to their server. For anything with real data (salaries, customers, finances), that's a hard no. So I built SplitMyExcel: it runs entirely in your browser. Your file never leaves your device — you can watch the Network tab and see zero uploads. Open it, drop a file, pick a column, download your split files. Done in seconds. It also does the other boring spreadsheet chores: merge files, remove duplicates, fix broken CSV encoding, change delimiters, and convert between Excel/CSV/JSON. Works with .xlsx, .xls, .csv and Google Sheets — and it happily chewed through a 2-million-row file in testing. No signup. No row limits. No "upgrade to continue." Free. Would love your feedback — especially what spreadsheet task eats your time that I should build next. 🙏

Split My Excel

Split, merge & convert spreadsheets — 100% in your browser

Split, merge & convert spreadsheets — 100% in your browser