XLSX + CSV → 1 FILE

Excel & CSV Merger

Combine many Excel and CSV files into one spreadsheet. Columns are matched by name, so files with different column order merge correctly. Everything happens in your browser — your files are never uploaded.

🔒 Runs in your browser 🧩 Columns matched by name 📑 All sheets supported

Drag & drop Excel or CSV files here, or click to browse

Merge all sheets of each workbook (not only the first one) Add a "Source" column with the file name Match column names ignoring case and extra spaces Remove duplicate rows

Save as